Ignore:
Timestamp:
Dec 18, 2007, 5:07:35 AM (12 years ago)
Author:
julian.reschke@…
Message:

fix draft name prefix ("draft-fielding-" -> "draft-ietf-httpbis-")

File:
1 edited

Legend:

Unmodified
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  • draft-ietf-httpbis/diffs/draft-ietf-httpbis-p7-auth-00-from-rfc2616-symrefs.diff.html

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    4338      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    4439      <tr><td><a name="diff0001" /></td></tr>
    45       <tr><td class="lineno" valign="top"></td><td class="lblock">Network Working Group                                        R. <span class="delete">Fielding</span></td><td> </td><td class="rblock">Network Working Group                                   R. <span class="insert">Fielding, Ed.</span></td><td class="lineno" valign="top"></td></tr>
    46       <tr><td class="lineno" valign="top"></td><td class="lblock">Internet-Draft                                                 <span class="delete">UC Irvine</span></td><td> </td><td class="rblock">Internet-Draft                                              <span class="insert">Day Software</span></td><td class="lineno" valign="top"></td></tr>
    47       <tr><td class="lineno" valign="top"></td><td class="lblock">Obsoletes: <span class="delete">2068</span> (if approved)                                  J. <span class="delete">Gettys</span></td><td> </td><td class="rblock">Obsoletes: <span class="insert">2068, 2616                                          J. Gettys</span></td><td class="lineno" valign="top"></td></tr>
    48       <tr><td class="lineno" valign="top"></td><td class="lblock">Intended status: Standards Track                              <span class="delete">Compaq/W3C</span></td><td> </td><td class="rblock"><span class="insert">(if approved)                                       One Laptop per Child</span></td><td class="lineno" valign="top"></td></tr>
    49       <tr><td class="lineno" valign="top"></td><td class="lblock">Expires: <span class="delete">December 3, 1999                                       J. Mogul</span></td><td> </td><td class="rblock"><span class="insert">Updates: 2617</span> (if approved)                                     J. <span class="insert">Mogul</span></td><td class="lineno" valign="top"></td></tr>
    50       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                  Compaq</span></td><td> </td><td class="rblock">Intended status: Standards Track                                      <span class="insert">HP</span></td><td class="lineno" valign="top"></td></tr>
    51       <tr><td class="lineno" valign="top"></td><td class="lblock">                                                              H. Frystyk</td><td> </td><td class="rblock">Expires: <span class="insert">June 19, 2008</span>                                        H. Frystyk</td><td class="lineno" valign="top"></td></tr>
    52       <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                 <span class="delete">W3C/MIT</span></td><td> </td><td class="rblock">                                                               <span class="insert">Microsoft</span></td><td class="lineno" valign="top"></td></tr>
     40      <tr><td class="lineno" valign="top"></td><td class="lblock">Network Working Group                                   <span class="delete">     R. Fielding</span></td><td> </td><td class="rblock">Network Working Group                                   <span class="insert">R. Fielding, Ed.</span></td><td class="lineno" valign="top"></td></tr>
     41      <tr><td class="lineno" valign="top"></td><td class="lblock">Internet-Draft                                              <span class="delete">   UC Irvin</span>e</td><td> </td><td class="rblock">Internet-Draft                                              <span class="insert">Day Softwar</span>e</td><td class="lineno" valign="top"></td></tr>
     42      <tr><td class="lineno" valign="top"></td><td class="lblock">Obsoletes: 2068<span class="delete"> (if approved)</span>                                  J. Gettys</td><td> </td><td class="rblock">Obsoletes: 2068<span class="insert">, 2616        </span>                                  J. Gettys</td><td class="lineno" valign="top"></td></tr>
     43      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">Intended status: Standards Track                              Compaq/W3C</span></td><td> </td><td class="rblock"><span class="insert">(if approved)                                       One Laptop per Child</span></td><td class="lineno" valign="top"></td></tr>
     44      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">Expires: December 3, 1999  </span>                                     J. Mogul</td><td> </td><td class="rblock"><span class="insert">Updates: 2617 (if approved)</span>                                     J. Mogul</td><td class="lineno" valign="top"></td></tr>
     45      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                  Compaq</span></td><td> </td><td class="rblock"><span class="insert">Intended status: Standards Track                                      HP</span></td><td class="lineno" valign="top"></td></tr>
     46      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      </span>                                        H. Frystyk</td><td> </td><td class="rblock"><span class="insert">Expires: June 20, 2008</span>                                        H. Frystyk</td><td class="lineno" valign="top"></td></tr>
     47      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                               <span class="delete">  W3C/MIT</span></td><td> </td><td class="rblock">                                                               <span class="insert">Microsoft</span></td><td class="lineno" valign="top"></td></tr>
    5348      <tr><td class="lineno" valign="top"></td><td class="left">                                                             L. Masinter</td><td> </td><td class="right">                                                             L. Masinter</td><td class="lineno" valign="top"></td></tr>
    5449      <tr><td><a name="diff0002" /></td></tr>
    … …  
    5954      <tr><td class="lineno" valign="top"></td><td class="left">                                                                 W3C/MIT</td><td> </td><td class="right">                                                                 W3C/MIT</td><td class="lineno" valign="top"></td></tr>
    6055      <tr><td><a name="diff0003" /></td></tr>
    61       <tr><td class="lineno" valign="top"></td><td class="lblock">                <span class="delete">Hypertext Transfer Protocol -- HTTP/1.1</span></td><td> </td><td class="rblock">                                                       <span class="insert">December 17, 2007</span></td><td class="lineno" valign="top"></td></tr>
    62       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                            rfc2616-symrefs</span></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
     56      <tr><td class="lineno" valign="top"></td><td class="lblock">                <span class="delete">Hypertext Transfer Protocol -- HTTP/1.1</span></td><td> </td><td class="rblock">                <span class="insert">                                       December 18, 2007</span></td><td class="lineno" valign="top"></td></tr>
     57      <tr><td class="lineno" valign="top"></td><td class="lblock">                            <span class="delete">rfc2616-symrefs</span></td><td> </td><td class="rblock">                            <span class="insert">                                             </span></td><td class="lineno" valign="top"></td></tr>
    6358      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                    HTTP/1.1, part 7: Authentication</span></td><td class="lineno" valign="top"></td></tr>
    6459      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                     draft-ietf-httpbis-p7-auth-00</span></td><td class="lineno" valign="top"></td></tr>
    … …  
    8681      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    8782      <tr><td><a name="diff0004" /></td></tr>
    88       <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">December 3, 1999</span>.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">June 19, 2008</span>.</td><td class="lineno" valign="top"></td></tr>
     83      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">December 3, 1999</span>.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">June 20, 2008</span>.</td><td class="lineno" valign="top"></td></tr>
    8984      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    9085      <tr><td class="lineno" valign="top"></td><td class="left">Copyright Notice</td><td> </td><td class="right">Copyright Notice</td><td class="lineno" valign="top"></td></tr>
    … …  
    9893      <tr><td class="lineno" valign="top"></td><td class="left">   protocol for distributed, collaborative, hypermedia information</td><td> </td><td class="right">   protocol for distributed, collaborative, hypermedia information</td><td class="lineno" valign="top"></td></tr>
    9994      <tr><td><a name="diff0006" /></td></tr>
    100       <tr><td class="lineno" valign="top"></td><td class="lblock">   systems.  <span class="delete">It is a generic, stateless, protocol which can be used for</span></td><td> </td><td class="rblock">   systems.  HTTP has been in use by the <span class="insert">World Wide</span> Web global</td><td class="lineno" valign="top"></td></tr>
    101       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   many tasks beyond its use for hypertext, such as name servers and</span></td><td> </td><td class="rblock">   information initiative since 1990.  This <span class="insert">document is Part 7 of the</span></td><td class="lineno" valign="top"></td></tr>
    102       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   distributed object management systems, through extension of its</span></td><td> </td><td class="rblock"><span class="insert">   seven-part</span> specification <span class="insert">that</span> defines the protocol referred to as</td><td class="lineno" valign="top"></td></tr>
    103       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request methods, error codes and headers [RFC2324].  A feature of</span></td><td> </td><td class="rblock">   <span class="insert">"HTTP/1.1" and, taken together, obsoletes</span> RFC <span class="insert">2616.  Part 7 defines</span></td><td class="lineno" valign="top"></td></tr>
    104       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP is the typing and negotiation of data representation, allowing</span></td><td> </td><td class="rblock"><span class="insert">   HTTP Authentication.</span></td><td class="lineno" valign="top"></td></tr>
     95      <tr><td class="lineno" valign="top"></td><td class="lblock">   systems.  <span class="delete">It is a generic, stateless, protocol which can be used for</span></td><td> </td><td class="rblock">   systems.  <span class="insert">HTTP has been in use by the World Wide Web global</span></td><td class="lineno" valign="top"></td></tr>
     96      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">many tasks beyond its use for hypertext, such as name servers and</span></td><td> </td><td class="rblock">   <span class="insert">information initiative since 1990.  This document is Part 7 of the</span></td><td class="lineno" valign="top"></td></tr>
     97      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">distributed object management systems, through extension of it</span>s</td><td> </td><td class="rblock">   <span class="insert">seven-part specification that defines the protocol referred to a</span>s</td><td class="lineno" valign="top"></td></tr>
     98      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">request methods, error codes and headers [RFC2324].  A feature of</span></td><td> </td><td class="rblock">   <span class="insert">"HTTP/1.1" and, taken together, obsoletes RFC 2616.  Part 7 defines</span></td><td class="lineno" valign="top"></td></tr>
     99      <tr><td class="lineno" valign="top"></td><td class="lblock">   HTTP <span class="delete">is the typing and negotiation of data representation, allowing</span></td><td> </td><td class="rblock">   HTTP <span class="insert">Authentication.</span></td><td class="lineno" valign="top"></td></tr>
    105100      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   systems to be built independently of the data being transferred.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    106       <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    107       <tr><td class="lineno" valign="top"></td><td class="lblock">   HTTP has been in use by the <span class="delete">World-Wide</span> Web global information</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    108       <tr><td class="lineno" valign="top"></td><td class="lblock">   initiative since 1990.  This specification defines the protocol</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    109       <tr><td class="lineno" valign="top"></td><td class="lblock">   referred to as <span class="delete">"HTTP/1.1", and is an update to</span> RFC <span class="delete">2068 [RFC2068].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     101      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     102      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP has been in use by the World-Wide Web global information</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     103      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   initiative since 1990.  This specification defines the protocol</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     104      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   referred to as "HTTP/1.1", and is an update to RFC 2068 [RFC2068].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    110105      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    111106      <tr><td class="lineno" valign="top"></td><td class="left">Editorial Note (To be removed by RFC Editor)</td><td> </td><td class="right">Editorial Note (To be removed by RFC Editor)</td><td class="lineno" valign="top"></td></tr>
    … …  
    113108      <tr><td><a name="diff0007" /></td></tr>
    114109      <tr><td class="lineno" valign="top"></td><td class="lblock">   This version of the HTTP specification contains only <span class="delete">XML processing</span></td><td> </td><td class="rblock">   This version of the HTTP specification contains only <span class="insert">minimal</span></td><td class="lineno" valign="top"></td></tr>
    115       <tr><td class="lineno" valign="top"></td><td class="lblock">   changes from [RFC2616] <span class="delete">in internet-draft form</span> for use in <span class="delete">creating</span></td><td> </td><td class="rblock"><span class="insert">   editorial</span> changes from [RFC2616] <span class="insert">(abstract, introductory paragraph,</span></td><td class="lineno" valign="top"></td></tr>
    116       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   diffs.</span></td><td> </td><td class="rblock"><span class="insert">   and authors' addresses).  All other changes are due to partitioning</span></td><td class="lineno" valign="top"></td></tr>
    117       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   the original into seven mostly independent parts.  The intent is</span> for</td><td class="lineno" valign="top"></td></tr>
    118       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">readers of future drafts to able to</span> use <span class="insert">draft 00 as the basis for</span></td><td class="lineno" valign="top"></td></tr>
     110      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">changes from [RFC2616] in internet-draft form for use in creating</span></td><td> </td><td class="rblock">   <span class="insert">editorial changes from [RFC2616] (abstract, introductory paragraph,</span></td><td class="lineno" valign="top"></td></tr>
     111      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">diffs.</span></td><td> </td><td class="rblock">   <span class="insert">and authors' addresses).  All other changes are due to partitioning</span></td><td class="lineno" valign="top"></td></tr>
     112      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   the original into seven mostly independent parts.  The intent is for</span></td><td class="lineno" valign="top"></td></tr>
     113      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   readers of future drafts to able to use draft 00 as the basis for</span></td><td class="lineno" valign="top"></td></tr>
    119114      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   comparison when the WG makes later changes to the specification text.</span></td><td class="lineno" valign="top"></td></tr>
    120115      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   This draft will shortly be followed by draft 01 (containing the first</span></td><td class="lineno" valign="top"></td></tr>
    121116      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   round of changes that have already been agreed to on the mailing</span></td><td class="lineno" valign="top"></td></tr>
    122       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   list).  There is no point</span> in <span class="insert">reviewing this draft other than to</span></td><td class="lineno" valign="top"></td></tr>
     117      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   list).  There is no point in reviewing this draft other than to</span></td><td class="lineno" valign="top"></td></tr>
    123118      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   verify that the partitioning has been done correctly.  Roy T.</span></td><td class="lineno" valign="top"></td></tr>
    124119      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Fielding, Yves Lafon, and Julian Reschke will be the editors after</span></td><td class="lineno" valign="top"></td></tr>
    125120      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   draft 00 is submitted.</span></td><td class="lineno" valign="top"></td></tr>
    126       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
     121      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                                                                         </span></td><td class="lineno" valign="top"></td></tr>
    127122      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Discussion of this draft should take place on the HTTPBIS working</span></td><td class="lineno" valign="top"></td></tr>
    128123      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   group mailing list (ietf-http-wg@w3.org).  The current issues list is</span></td><td class="lineno" valign="top"></td></tr>
    … …  
    134129      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    135130      <tr><td><a name="diff0008" /></td></tr>
    136       <tr><td class="lineno" valign="top"></td><td class="lblock">   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   <span class="delete">9</span></td><td> </td><td class="rblock">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
    137       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     1.1.   Purpose  . . . . . . . . . . . . . . . . . . . . . . . .   9</span></td><td> </td><td class="rblock"><span class="insert">   2.  Status Code Definitions</span>  . . . . . . . . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
    138       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     1.2.   Requirements . . . . . . . . . . . . . . . . . . . . . .   9</span></td><td> </td><td class="rblock"><span class="insert">     2.1.  401 Unauthorized</span> . . . . . . . . . . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
    139       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     1.3.   Terminology  . . . . . . . . . . . . . . . . . . . . . .  10</span></td><td> </td><td class="rblock"><span class="insert">     2.2.  407 Proxy</span> Authentication <span class="insert">Required</span>  . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
    140       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     1.4.   Overall Operation  . . . . . . . . . . . . . . . . . . .  14</span></td><td> </td><td class="rblock"><span class="insert">   3.  Header Field Definitions</span> . . . . . . . . . . . . . . . . . . .  <span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
    141       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   2.  Notational Conventions and Generic Grammar  . . . . . . . . .  16</span></td><td> </td><td class="rblock"><span class="insert">     3.1.  Authorization</span>  . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
    142       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     2.1.   Augmented BNF  . . . . . . . . . . . . . . . . . . . . .  16</span></td><td> </td><td class="rblock"><span class="insert">     3.2.  Proxy-Authenticate</span> . . . . . . . . . . . . . . . . . . . .  <span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
    143       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     2.2.   Basic Rules  . . . . . . . . . . . . . . . . . . . . . .  18</span></td><td> </td><td class="rblock"><span class="insert">     3.3.  Proxy-Authorization</span>  . . . . . . . . . . . . . . . . . . .  <span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
    144       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   3.  Protocol Parameters . . . . . . . . . . . . . . . . . . . . .  20</span></td><td> </td><td class="rblock"><span class="insert">     3.4.  WWW-Authenticate</span> . . . . . . . . . . . . . . . . . . . . .  <span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
    145       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.1.   HTTP Version . . . . . . . . . . . . . . . . . . . . . .  20</span></td><td> </td><td class="rblock"><span class="insert">   4.  IANA Considerations</span>  . . . . . . . . . . . . . . . . . . . . .  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
    146       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.2.   Uniform Resource Identifiers . . . . . . . . . . . . . .  21</span></td><td> </td><td class="rblock"><span class="insert">   5.  Security Considerations</span>  . . . . . . . . . . . . . . . . . . .  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
    147       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       3.2.1.   General Syntax . . . . . . . . . . . . . . . . . . .  21</span></td><td> </td><td class="rblock"><span class="insert">     5.1.  Authentication Credentials</span> and <span class="insert">Idle Clients</span>  . . . . . . .  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
    148       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       3.2.2.   http URL . . . . . . . . . . . . . . . . . . . . . .  22</span></td><td> </td><td class="rblock"><span class="insert">   6.  Acknowledgments</span>  . . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
    149       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       3.2.3.   URI Comparison . . . . . . . . . . . . . . . . . . .  22</span></td><td> </td><td class="rblock"><span class="insert">   7.  References</span> . . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
    150       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.3.   Date/Time Formats  . . . . . . . . . . . . . . . . . . .  23</span></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
    151       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       3.3.1.   Full Date  . . . . . . . . . . . . . . . . . . . . .  23</span></td><td> </td><td class="rblock">   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">.  9</span></td><td class="lineno" valign="top"></td></tr>
    152       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       3.3.2.   Delta Seconds  . . . . . . . . . . . . . . . . . . .  24</span></td><td> </td><td class="rblock">   Intellectual Property and Copyright Statements . . . . . . . . . <span class="insert">. 11</span></td><td class="lineno" valign="top"></td></tr>
     131      <tr><td class="lineno" valign="top"></td><td class="lblock">   1.  Introduction <span class="delete"> . . . . . . . . . . . . . . . . . . . . . . . .   9</span></td><td> </td><td class="rblock">   1.  Introduction <span class="insert">. . . . . . . . . . . . . . . . . . . . . . . . .  4</span></td><td class="lineno" valign="top"></td></tr>
     132      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  1.1.   Purpose  . . . . . . . . . . . . . . . . . . . . . . . .   9</span></td><td> </td><td class="rblock">   <span class="insert">2.  Status Code Definitions  . . . . . . . . . . . . . . . . . . .  4</span></td><td class="lineno" valign="top"></td></tr>
     133      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">1.2.   Requirements . . . . . . . . . . . . . . . . . . . . . .   9</span></td><td> </td><td class="rblock">     <span class="insert">2.1.  401 Unauthorized . . . . . . . . . . . . . . . . . . . . .  4</span></td><td class="lineno" valign="top"></td></tr>
     134      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">1.3.   Terminology  . . . . . . . . . . . . . . . . . . . . . .  10</span></td><td> </td><td class="rblock">     <span class="insert">2.2.  407 Proxy Authentication Required  . . . . . . . . . . . .  4</span></td><td class="lineno" valign="top"></td></tr>
     135      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  1.4.   Overall Operation  . . . . . . . . . . . . . . . . . . .  14</span></td><td> </td><td class="rblock">   <span class="insert">3.  Header Field Definitions . . . . . . . . . . . . . . . . . . .  5</span></td><td class="lineno" valign="top"></td></tr>
     136      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">2.  Notational Conventions and Generic Grammar  . . . . . . . . .  16</span></td><td> </td><td class="rblock">   <span class="insert">  3.1.  Authorization  . . . . . . . . . . . . . . . . . . . . . .  5</span></td><td class="lineno" valign="top"></td></tr>
     137      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.1.   Augmented BNF  . . . . . . . . . . . . . . . . . . . . .  1</span>6</td><td> </td><td class="rblock">     <span class="insert">3.2.  Proxy-Authenticate . . . . . . . . . . . . . . . . . . . .  </span>6</td><td class="lineno" valign="top"></td></tr>
     138      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.2.   Basic Rules  . . . . . . . . . . . . . . . . . . . . . .  18</span></td><td> </td><td class="rblock">     <span class="insert">3.3.  Proxy-Authorization  . . . . . . . . . . . . . . . . . . .  6</span></td><td class="lineno" valign="top"></td></tr>
     139      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">3.  Protocol Parameters . . . . . . . . . . . . . . . . . . . . .  20</span></td><td> </td><td class="rblock">   <span class="insert">  3.4.  WWW-Authenticate . . . . . . . . . . . . . . . . . . . . .  6</span></td><td class="lineno" valign="top"></td></tr>
     140      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  3.1.   HTTP Version . . . . . . . . . . . . . . . . . . . . . .  20</span></td><td> </td><td class="rblock">   <span class="insert">4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  7</span></td><td class="lineno" valign="top"></td></tr>
     141      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  3.2.   Uniform Resource Identifiers . . . . . . . . . . . . . .  21</span></td><td> </td><td class="rblock">   <span class="insert">5.  Security Considerations  . . . . . . . . . . . . . . . . . . .  7</span></td><td class="lineno" valign="top"></td></tr>
     142      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">  3.2.1.   General Syntax . . . . . . . . . . . . . . . . . . .  21</span></td><td> </td><td class="rblock">     <span class="insert">5.1.  Authentication Credentials and Idle Clients  . . . . . . .  7</span></td><td class="lineno" valign="top"></td></tr>
     143      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">    3.2.2.   http URL . . . . . . . . . . . . . . . . . . . . . .  22</span></td><td> </td><td class="rblock">   <span class="insert">6.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . .  8</span></td><td class="lineno" valign="top"></td></tr>
     144      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">    3.2.3.   URI Comparison . . . . . . . . . . . . . . . . . . .  22</span></td><td> </td><td class="rblock">   <span class="insert">7.  References . . . . . . . . . . . . . . . . . . . . . . . . . .  8</span></td><td class="lineno" valign="top"></td></tr>
     145      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  3.3.   Date/Time Formats  . . . . . . . . . . . . . . . . . . .  23</span></td><td> </td><td class="rblock">   <span class="insert">Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8</span></td><td class="lineno" valign="top"></td></tr>
     146      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">    3.3.1.   Full Date  . . . . . . . . . . . . . . . . . . . . .  23</span></td><td> </td><td class="rblock">   <span class="insert">Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . .  9</span></td><td class="lineno" valign="top"></td></tr>
     147      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">    3.3.2.   Delta Seconds  . . . . . . . . . . . . . . . . . . .  24</span></td><td> </td><td class="rblock">   <span class="insert">Intellectual Property and Copyright Statements . . . . . . . . . . 11</span></td><td class="lineno" valign="top"></td></tr>
    153148      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.4.   Character Sets . . . . . . . . . . . . . . . . . . . . .  24</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    154149      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       3.4.1.   Missing Charset  . . . . . . . . . . . . . . . . . .  25</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    361356      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       15.1.4.  Privacy Issues Connected to Accept Headers . . . . . 155</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    362357      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.2.  Attacks Based On File and Path Names . . . . . . . . . . 156</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    363       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.3.  DNS Spoofing . . . . . . . . .</span> . . . . . . . . . . . . . <span class="delete">156</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    364       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.4.  Location Headers and Spoofing</span>  . . . . . . . . . . . . . <span class="delete">157</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    365       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.5.  Content-Disposition Issues</span> . . . . . . . . . . . . . . . <span class="delete">157</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    366       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.6.</span>  Authentication <span class="delete">Credentials and Idle Clients  . . . . . . 157</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     358      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.3.  DNS Spoofing . . . . . . . . . . . . . . . . . . . . . . 156</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     359      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.4.  Location Headers and Spoofing  . . . . . . . . . . . . . 157</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     360      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.5.  Content-Disposition Issues . . . . . . . . . . . . . . . 157</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     361      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.6.  Authentication Credentials and Idle Clients  . . . . . . 157</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    367362      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.7.  Proxies and Caching  . . . . . . . . . . . . . . . . . . 158</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    368363      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       15.7.1.  Denial of Service Attacks on Proxies . . . . . . . . 159</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    369364      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   16. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 159</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    370       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   17. References  . . . . . . . . . . . . . . . . . . .</span> . . . . . . <span class="delete">161</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    371       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Appendix A.  Appendices</span> . . . . . . . . . . . . . . . . . . . . . <span class="delete">165</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    372       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.1.   Internet Media Type message/http and application/http</span>  . <span class="delete">165</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    373       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.2.   Internet Media Type multipart/byteranges</span> . . . . . . . . <span class="delete">166</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    374       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.3.   Tolerant Applications</span>  . . . . . . . . . . . . . . . . . <span class="delete">167</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     365      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   17. References  . . . . . . . . . . . . . . . . . . . . . . . . . 161</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     366      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Appendix A.  Appendices . . . . . . . . . . . . . . . . . . . . . 165</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     367      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.1.   Internet Media Type message/http and application/http  . 165</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     368      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.2.   Internet Media Type multipart/byteranges . . . . . . . . 166</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     369      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.3.   Tolerant Applications  . . . . . . . . . . . . . . . . . 167</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    375370      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.4.   Differences Between HTTP Entities and RFC 2045</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    376       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">            Entities</span> . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">168</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    377       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.1.   MIME-Version</span> . . . . . . . . . . . . . . . . . . . . <span class="delete">169</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    378       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.2.   Conversion to Canonical Form</span> . . . . . . . . . . . . <span class="delete">169</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    379       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.3.   Conversion of Date Formats</span> . . . . . . . . . . . . . <span class="delete">169</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    380       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.4.   Introduction of Content-Encoding</span> . . . . . . . . . . <span class="delete">170</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    381       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.5.   No Content-Transfer-Encoding</span> . . . . . . . . . . . . <span class="delete">170</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    382       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.6.   Introduction of Transfer-Encoding</span>  . . . . . . . . . <span class="delete">170</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    383       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.7.   MHTML</span> and <span class="delete">Line Length Limitations  . . . . . . . . . 171</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     371      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">            Entities . . . . . . . . . . . . . . . . . . . . . . . . 168</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     372      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.1.   MIME-Version . . . . . . . . . . . . . . . . . . . . 169</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     373      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.2.   Conversion to Canonical Form . . . . . . . . . . . . 169</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     374      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.3.   Conversion of Date Formats . . . . . . . . . . . . . 169</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     375      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.4.   Introduction of Content-Encoding . . . . . . . . . . 170</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     376      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.5.   No Content-Transfer-Encoding . . . . . . . . . . . . 170</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     377      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.6.   Introduction of Transfer-Encoding  . . . . . . . . . 170</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     378      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.4.7.   MHTML and Line Length Limitations  . . . . . . . . . 171</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    384379      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.5.   Additional Features  . . . . . . . . . . . . . . . . . . 171</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    385380      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.5.1.   Content-Disposition  . . . . . . . . . . . . . . . . 171</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    386       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.6.   Compatibility with Previous Versions . . . . . . . .</span> . . <span class="delete">172</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    387       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.6.1.   Changes from HTTP/1.0</span>  . . . . . . . . . . . . . . . <span class="delete">173</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    388       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.6.2.   Compatibility with HTTP/1.0 Persistent Connections</span> . <span class="delete">174</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    389       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.6.3.   Changes from RFC 2068</span>  . . . . . . . . . . . . . . . <span class="delete">174</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    390       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Appendix B.  Index</span>  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">177</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    391       <tr><td class="lineno" valign="top"></td><td class="lblock">   Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">177</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    392       <tr><td class="lineno" valign="top"></td><td class="lblock">   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">188</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    393       <tr><td class="lineno" valign="top"></td><td class="lblock">   Intellectual Property and Copyright Statements  . . . . . . . . . <span class="delete">190</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     381      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     A.6.   Compatibility with Previous Versions . . . . . . . . . . 172</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     382      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.6.1.   Changes from HTTP/1.0  . . . . . . . . . . . . . . . 173</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     383      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.6.2.   Compatibility with HTTP/1.0 Persistent Connections . 174</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     384      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       A.6.3.   Changes from RFC 2068  . . . . . . . . . . . . . . . 174</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     385      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Appendix B.  Index  . . . . . . . . . . . . . . . . . . . . . . . 177</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     386      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     387      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . 188</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     388      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Intellectual Property and Copyright Statements  . . . . . . . . . 190</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    394389      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    395390      <tr><td class="lineno" valign="top"></td><td class="left">1.  Introduction</td><td> </td><td class="right">1.  Introduction</td><td class="lineno" valign="top"></td></tr>
    396391      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    397392      <tr><td><a name="diff0009" /></td></tr>
    398       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">1.1.  Purpose</span></td><td> </td><td class="rblock">   This <span class="insert">document will define aspects</span> of HTTP <span class="insert">related</span> to access <span class="insert">control</span></td><td class="lineno" valign="top"></td></tr>
    399       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock">   and <span class="insert">authentication.  Right now</span> it only <span class="insert">includes</span> the <span class="insert">extracted</span></td><td class="lineno" valign="top"></td></tr>
    400       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Hypertext Transfer Protocol (HTTP) is an application-level</span></td><td> </td><td class="rblock"><span class="insert">   relevant sections</span> of <span class="insert">RFC 2616 [RFC2616]</span> with only minor <span class="insert">edits.</span></td><td class="lineno" valign="top"></td></tr>
     393      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">1.1.  Purpose</span></td><td> </td><td class="rblock"><span class="insert">   This document will define aspects of HTTP related to access control</span></td><td class="lineno" valign="top"></td></tr>
     394      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">                                                                      </span></td><td> </td><td class="rblock">   <span class="insert">and authentication.  Right now it only includes the extracted</span></td><td class="lineno" valign="top"></td></tr>
     395      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">The Hypertext Transfer Protocol (HTTP) is an application-level</span></td><td> </td><td class="rblock">   <span class="insert">relevant sections of RFC 2616 [RFC2616] with only minor edits.</span></td><td class="lineno" valign="top"></td></tr>
    401396      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   protocol for distributed, collaborative, hypermedia information</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    402397      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   systems.  HTTP has been in use by the World-Wide Web global</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    414409      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   communicating applications to determine each other's true</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    415410      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   capabilities.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    416       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     411      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    417412      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This specification defines the protocol referred to as "HTTP/1.1".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    418       <tr><td class="lineno" valign="top"></td><td class="lblock">   This <span class="delete">protocol includes more stringent requirements than HTTP/1.0 in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     413      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This protocol includes more stringent requirements than HTTP/1.0 in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    419414      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   order to ensure reliable implementation of its features.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    420       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     415      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    421416      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Practical information systems require more functionality than simple</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    422417      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   retrieval, including search, front-end update, and annotation.  HTTP</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    423418      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   allows an open-ended set of methods and headers that indicate the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    424       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   purpose of a request [RFC2324].  It builds on the discipline</span> of</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    425       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">reference provided by the Uniform Resource Identifier (URI)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     419      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   purpose of a request [RFC2324].  It builds on the discipline of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     420      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   reference provided by the Uniform Resource Identifier (URI)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    426421      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   [RFC1630], as a location (URL) [RFC1738] or name (URN) [RFC1737], for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    427422      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   indicating the resource to which a method is to be applied.  Messages</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    429424      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   as defined by the Multipurpose Internet Mail Extensions (MIME)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    430425      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   [RFC2045].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    431       <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    432       <tr><td class="lineno" valign="top"></td><td class="lblock">   HTTP <span class="delete">is also used as a generic protocol for communication between</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    433       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   user agents and proxies/gateways</span> to <span class="delete">other Internet systems, including</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     426      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     427      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP is also used as a generic protocol for communication between</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     428      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   user agents and proxies/gateways to other Internet systems, including</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    434429      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   those supported by the SMTP [RFC821], NNTP [RFC977], FTP [RFC959],</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    435430      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Gopher [RFC1436], and WAIS [WAIS] protocols.  In this way, HTTP</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    436       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   allows basic hypermedia</span> access <span class="delete">to resources available from diverse</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     431      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   allows basic hypermedia access to resources available from diverse</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    437432      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   applications.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    438       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     433      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    439434      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">1.2.  Requirements</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    440       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     435      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    441436      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    442437      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    443438      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   document are to be interpreted as described in RFC 2119 [RFC2119].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    444       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     439      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    445440      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An implementation is not compliant if it fails to satisfy one or more</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    446441      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of the MUST or REQUIRED level requirements for the protocols it</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    451446      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   level requirements for its protocols is said to be "conditionally</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    452447      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   compliant."</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    453       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     448      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    454449      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">1.3.  Terminology</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    455       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     450      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    456451      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This specification uses a number of terms to refer to the roles</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    457452      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   played by participants in, and objects of, the HTTP communication.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    458       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     453      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    459454      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   connection</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    460       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     455      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    461456      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A transport layer virtual circuit established between two programs</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    462457      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      for the purpose of communication.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    463       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     458      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    464459      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    465       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     460      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    466461      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The basic unit of HTTP communication, consisting of a structured</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    467462      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      sequence of octets matching the syntax defined in Section 4 and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    468463      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      transmitted via the connection.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    469       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     464      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    470465      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    471       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     466      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    472467      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An HTTP request message, as defined in Section 5.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    473       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     468      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    474469      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   response</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    475       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     470      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    476471      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An HTTP response message, as defined in Section 6.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    477       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     472      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    478473      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   resource</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    479       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     474      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    480475      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A network data object or service that can be identified by a URI,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    481476      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      as defined in Section 3.2.  Resources may be available in multiple</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    482477      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      representations (e.g. multiple languages, data formats, size, and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    483478      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      resolutions) or vary in other ways.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    484       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     479      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    485480      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entity</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    486       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     481      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    487482      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The information transferred as the payload of a request or</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    488483      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      response.  An entity consists of metainformation in the form of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    489       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      entity-header fields</span> and <span class="delete">content in the form of an entity-body, as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     484      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      entity-header fields and content in the form of an entity-body, as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    490485      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      described in Section 7.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    491       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     486      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    492487      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   representation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    493488      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An entity included with a response that is subject to content</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    494489      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      negotiation, as described in Section 12.  There may exist multiple</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    495490      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      representations associated with a particular response status.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    496       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     491      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    497492      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   content negotiation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    498       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     493      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    499494      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The mechanism for selecting the appropriate representation when</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    500495      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      servicing a request, as described in Section 12.  The</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    501496      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      representation of entities in any response can be negotiated</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    502497      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      (including error responses).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    503       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     498      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    504499      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   variant</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    505       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     500      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    506501      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A resource may have one, or more than one, representation(s)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    507       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      associated with</span> it <span class="delete">at any given instant.  Each of these</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     502      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      associated with it at any given instant.  Each of these</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    508503      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      representations is termed a `varriant'.  Use of the term `variant'</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    509504      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      does not necessarily imply that the resource is subject to content</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    510505      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      negotiation.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    511       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     506      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    512507      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   client</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    513       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     508      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    514509      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A program that establishes connections for the purpose of sending</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    515510      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      requests.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    516       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     511      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    517512      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   user agent</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    518       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     513      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    519514      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The client which initiates a request.  These are often browsers,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    520515      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      editors, spiders (web-traversing robots), or other end user tools.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    521       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     516      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    522517      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   server</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    523       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     518      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    524519      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An application program that accepts connections in order to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    525520      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      service requests by sending back responses.  Any given program may</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    526521      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      be capable of being both a client and a server; our use of these</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    527       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      terms refers</span> only <span class="delete">to the role being performed by the program for a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     522      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      terms refers only to the role being performed by the program for a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    528523      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      particular connection, rather than to the program's capabilities</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    529524      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      in general.  Likewise, any server may act as an origin server,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    530525      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      proxy, gateway, or tunnel, switching behavior based on the nature</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    531526      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      of each request.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    532       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     527      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    533528      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   origin server</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    534       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     529      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    535530      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The server on which a given resource resides or is to be created.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    536       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     531      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    537532      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   proxy</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    538       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     533      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    539534      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An intermediary program which acts as both a server and a client</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    540535      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      for the purpose of making requests on behalf of other clients.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    541       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     536      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    542537      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Requests are serviced internally or by passing them on, with</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    543538      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      possible translation, to other servers.  A proxy MUST implement</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    552547      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      behavior is explicitly stated, the HTTP proxy requirements apply</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    553548      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      to both types of proxies.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    554       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     549      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    555550      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   gateway</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    556       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     551      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    557552      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A server which acts as an intermediary for some other server.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    558553      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Unlike a proxy, a gateway receives requests as if it were the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    559554      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      origin server for the requested resource; the requesting client</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    560555      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      may not be aware that it is communicating with a gateway.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    561       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     556      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    562557      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   tunnel</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    563       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     558      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    564559      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An intermediary program which is acting as a blind relay between</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    565560      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      two connections.  Once active, a tunnel is not considered a party</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    567562      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      initiated by an HTTP request.  The tunnel ceases to exist when</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    568563      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      both ends of the relayed connections are closed.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    569       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     564      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    570565      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   cache</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    571       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     566      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    572567      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A program's local store of response messages and the subsystem</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    573568      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      that controls its message storage, retrieval, and deletion.  A</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    576571      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      requests.  Any client or server may include a cache, though a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    577572      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      cache cannot be used by a server that is acting as a tunnel.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    578       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     573      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    579574      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   cacheable</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    580       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     575      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    581576      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A response is cacheable if a cache is allowed to store a copy of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    582577      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      the response message for use in answering subsequent requests.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    585580      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      be additional constraints on whether a cache can use the cached</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    586581      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      copy for a particular request.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    587       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     582      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    588583      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   first-hand</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    589584      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A response is first-hand if it comes directly and without</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    591586      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      proxies.  A response is also first-hand if its validity has just</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    592587      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      been checked directly with the origin server.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    593       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     588      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    594589      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   explicit expiration time</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    595       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     590      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    596591      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The time at which the origin server intends that an entity should</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    597592      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      no longer be returned by a cache without further validation.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    598       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     593      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    599594      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   heuristic expiration time</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    600       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     595      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    601596      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An expiration time assigned by a cache when no explicit expiration</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    602597      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      time is available.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    603       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     598      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    604599      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   age</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    605       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     600      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    606601      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The age of a response is the time since it was sent by, or</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    607602      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      successfully validated with, the origin server.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    608       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     603      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    609604      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   freshness lifetime</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    610       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     605      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    611606      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The length of time between the generation of a response and its</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    612607      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      expiration time.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    613       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     608      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    614609      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   fresh</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    615       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     610      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    616611      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A response is fresh if its age has not yet exceeded its freshness</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    617612      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      lifetime.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    618       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     613      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    619614      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   stale</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    620       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     615      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    621616      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A response is stale if its age has passed its freshness lifetime.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    622       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     617      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    623618      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   semantically transparent</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    624       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     619      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    625620      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A cache behaves in a "semantically transparent" manner, with</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    626621      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      respect to a particular response, when its use affects neither the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    630625      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      that it would have received had its request been handled directly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    631626      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      by the origin server.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    632       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     627      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    633628      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   validator</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    634       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     629      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    635630      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A protocol element (e.g., an entity tag or a Last-Modified time)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    636631      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      that is used to find out whether a cache entry is an equivalent</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    637632      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      copy of an entity.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    638       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     633      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    639634      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   upstream/downstream</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    640       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     635      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    641636      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Upstream and downstream describe the flow of a message: all</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    642637      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      messages flow from upstream to downstream.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    643       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     638      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    644639      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   inbound/outbound</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    645       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     640      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    646641      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Inbound and outbound refer to the request and response paths for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    647642      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      messages: "inbound" means "traveling toward the origin server",</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    648643      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      and "outbound" means "traveling toward the user agent"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    649       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     644      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    650645      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">1.4.  Overall Operation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    651       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     646      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    652647      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The HTTP protocol is a request/response protocol.  A client sends a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    653648      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request to the server in the form of a request method, URI, and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    659654      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   metainformation, and possible entity-body content.  The relationship</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    660655      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   between HTTP and MIME is described in Appendix A.4.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    661       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     656      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    662657      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Most HTTP communication is initiated by a user agent and consists of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    663658      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   a request to be applied to a resource on some origin server.  In the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    664659      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   simplest case, this may be accomplished via a single connection (v)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    665660      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   between the user agent (UA) and the origin server (O).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    666       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     661      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    667662      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          request chain ------------------------&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    668663      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       UA -------------------v------------------- O</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    669664      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          &lt;----------------------- response chain</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    670       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     665      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    671666      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A more complicated situation occurs when one or more intermediaries</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    672667      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   are present in the request/response chain.  There are three common</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    680675      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   without changing the messages; tunnels are used when the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    681676      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   communication needs to pass through an intermediary (such as a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    682       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   firewall) even when the intermediary cannot understand</span> the <span class="delete">contents</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    683       <tr><td class="lineno" valign="top"></td><td class="lblock">   of <span class="delete">the messages.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    684       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     677      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   firewall) even when the intermediary cannot understand the contents</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     678      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of the messages.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     679      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    685680      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          request chain --------------------------------------&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    686681      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       UA -----v----- A -----v----- B -----v----- C -----v----- O</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    687682      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          &lt;------------------------------------- response chain</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    688       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     683      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    689684      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The figure above shows three intermediaries (A, B, and C) between the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    690685      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   user agent and origin server.  A request or response message that</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    691686      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   travels the whole chain will pass through four separate connections.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    692687      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This distinction is important because some HTTP communication options</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    693       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   may apply only to the connection</span> with <span class="delete">the nearest, non-tunnel</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    694       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   neighbor,</span> only <span class="delete">to the end-points of the chain, or to all connections</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     688      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   may apply only to the connection with the nearest, non-tunnel</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     689      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   neighbor, only to the end-points of the chain, or to all connections</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    695690      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   along the chain.  Although the diagram is linear, each participant</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    696691      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   may be engaged in multiple, simultaneous communications.  For</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    698693      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   and/or forwarding requests to servers other than C, at the same time</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    699694      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that it is handling A's request.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    700       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     695      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    701696      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Any party to the communication which is not acting as a tunnel may</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    702697      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   employ an internal cache for handling requests.  The effect of a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    706701      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   cached copy of an earlier response from O (via C) for a request which</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    707702      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   has not been cached by UA or A.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    708       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     703      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    709704      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">             request chain ----------&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    710705      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          UA -----v----- A -----v----- B - - - - - - C - - - - - - O</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    711706      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">             &lt;--------- response chain</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    712       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     707      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    713708      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Not all responses are usefully cacheable, and some requests may</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    714709      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   contain modifiers which place special requirements on cache behavior.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    715710      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP requirements for cache behavior and cacheable responses are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    716711      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   defined in Section 13.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    717       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     712      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    718713      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In fact, there are a wide variety of architectures and configurations</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    719714      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of caches and proxies currently being experimented with or deployed</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    729724      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   reliability and, failing that, at least reliable indications of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    730725      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   failure.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    731       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     726      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    732727      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP communication usually takes place over TCP/IP connections.  The</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    733728      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   default port is TCP 80 [RFC1700], but other ports can be used.  This</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    738733      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   onto the transport data units of the protocol in question is outside</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    739734      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the scope of this specification.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    740       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     735      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    741736      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In HTTP/1.0, most implementations used a new connection for each</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    742737      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request/response exchange.  In HTTP/1.1, a connection may be used for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    743738      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   one or more request/response exchanges, although connections may be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    744739      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   closed for a variety of reasons (see Section 8.1).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    745       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     740      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    746741      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">2.  Notational Conventions and Generic Grammar</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    747       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     742      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    748743      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">2.1.  Augmented BNF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    749       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     744      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    750745      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   All of the mechanisms specified in this document are described in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    751746      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   both prose and an augmented Backus-Naur Form (BNF) similar to that</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    753748      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the notation in order to understand this specification.  The</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    754749      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   augmented BNF includes the following constructs:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    755       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     750      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    756751      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   name = definition</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    757       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     752      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    758753      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The name of a rule is simply the name itself (without any</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    759754      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      enclosing "&lt;" and "&gt;") and is separated from its definition by the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    764759      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      brackets are used within definitions whenever their presence will</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    765760      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      facilitate discerning the use of rule names.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    766       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     761      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    767762      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "literal"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    768       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     763      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    769764      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Quotation marks surround literal text.  Unless stated otherwise,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    770765      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      the text is case-insensitive.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    771       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     766      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    772767      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   rule1 | rule2</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    773       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     768      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    774769      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Elements separated by a bar ("|") are alternatives, e.g., "yes |</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    775770      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      no" will accept yes or no.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    776       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     771      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    777772      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (rule1 rule2)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    778773      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Elements enclosed in parentheses are treated as a single element.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    779774      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Thus, "(elem (foo | bar) elem)" allows the token sequences "elem</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    780775      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      foo elem" and "elem bar elem".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    781       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     776      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    782777      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   *rule</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    783       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     778      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    784779      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The character "*" preceding an element indicates repetition.  The</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    785780      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      full form is "&lt;n&gt;*&lt;m&gt;element" indicating at least &lt;n&gt; and at most</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    787782      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      that "*(element)" allows any number, including zero; "1*element"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    788783      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      requires at least one; and "1*2element" allows one or two.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    789       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     784      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    790785      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   [rule]</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    791       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     786      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    792787      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Square brackets enclose optional elements; "[foo bar]" is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    793788      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      equivalent to "*1(foo bar)".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    794       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     789      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    795790      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   N rule</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    796       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     791      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    797792      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Specific repetition: "&lt;n&gt;(element)" is equivalent to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    798793      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      "&lt;n&gt;*&lt;n&gt;(element)"; that is, exactly &lt;n&gt; occurrences of (element).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    799794      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Thus 2DIGIT is a 2-digit number, and 3ALPHA is a string of three</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    800795      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      alphabetic characters.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    801       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     796      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    802797      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   #rule</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    803       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     798      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    804799      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A construct "#" is defined, similar to "*", for defining lists of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    805800      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      elements.  The full form is "&lt;n&gt;#&lt;m&gt;element" indicating at least</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    807802      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      (",") and OPTIONAL linear white space (LWS).  This makes the usual</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    808803      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      form of lists very easy; a rule such as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    809       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     804      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    810805      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      ( *LWS element *( *LWS "," *LWS element ))</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    811       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     806      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    812807      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      can be shown as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    813       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     808      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    814809      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      1#element</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    815       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     810      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    816811      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Wherever this construct is used, null elements are allowed, but do</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    817812      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      not contribute to the count of elements present.  That is,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    822817      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      "1#element" requires at least one; and "1#2element" allows one or</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    823818      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      two.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    824       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     819      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    825820      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   ; comment</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    826821      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A semi-colon, set off some distance to the right of rule text,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    828823      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      simple way of including useful notes in parallel with the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    829824      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      specifications.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    830       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     825      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    831826      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   implied *LWS</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    832       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     827      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    833828      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The grammar described by this specification is word-based.  Except</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    834829      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      where noted otherwise, linear white space (LWS) can be included</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    839834      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      of "token" below), since they would otherwise be interpreted as a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    840835      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      single token.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    841       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     836      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    842837      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">2.2.  Basic Rules</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    843       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     838      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    844839      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The following rules are used throughout this specification to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    845840      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   describe basic parsing constructs.  The US-ASCII coded character set</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    846841      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   is defined by ANSI X3.4-1986 [USASCII].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    847       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     842      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    848843      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       OCTET          = &lt;any 8-bit sequence of data&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    849844      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       CHAR           = &lt;any US-ASCII character (octets 0 - 127)&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    859854      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       HT             = &lt;US-ASCII HT, horizontal-tab (9)&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    860855      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       &lt;"&gt;            = &lt;US-ASCII double-quote mark (34)&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    861       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     856      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    862857      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP/1.1 defines the sequence CR LF as the end-of-line marker for all</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    863858      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   protocol elements except the entity-body (see Appendix A.3 for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    864859      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   tolerant applications).  The end-of-line marker within an entity-body</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    865860      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   is defined by its associated media type, as described in Section 3.7.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    866       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     861      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    867862      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       CRLF           = CR LF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    868       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     863      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    869864      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP/1.1 header field values can be folded onto multiple lines if the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    870865      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   continuation line begins with a space or horizontal tab.  All linear</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    872867      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   recipient MAY replace any linear white space with a single SP before</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    873868      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   interpreting the field value or forwarding the message downstream.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    874       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     869      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    875870      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       LWS            = [CRLF] 1*( SP | HT )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    876       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     871      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    877872      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The TEXT rule is only used for descriptive field contents and values</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    878873      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that are not intended to be interpreted by the message parser.  Words</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    880875      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   8859-1 [ISO-8859] only when encoded according to the rules of RFC</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    881876      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   2047 [RFC2047].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    882       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     877      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    883878      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       TEXT           = &lt;any OCTET except CTLs,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    884879      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        but including LWS&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    885       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     880      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    886881      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A CRLF is allowed in the definition of TEXT only as part of a header</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    887882      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   field continuation.  It is expected that the folding LWS will be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    888883      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   replaced with a single SP before interpretation of the TEXT value.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    889       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     884      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    890885      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Hexadecimal numeric characters are used in several protocol elements.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    891       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     886      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    892887      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       HEX            = "A" | "B" | "C" | "D" | "E" | "F"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    893888      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | "a" | "b" | "c" | "d" | "e" | "f" | DIGIT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    894       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     889      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    895890      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Many HTTP/1.1 header field values consist of words separated by LWS</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    896891      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   or special characters.  These special characters MUST be in a quoted</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    897892      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   string to be used within a parameter value (as defined in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    898893      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Section 3.6).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    899       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     894      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    900895      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       token          = 1*&lt;any CHAR except CTLs or separators&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    901896      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       separators     = "(" | ")" | "&lt;" | "&gt;" | "@"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    903898      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | "/" | "[" | "]" | "?" | "="</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    904899      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | "{" | "}" | SP | HT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    905       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     900      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    906901      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Comments can be included in some HTTP header fields by surrounding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    907902      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the comment text with parentheses.  Comments are only allowed in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    909904      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In all other fields, parentheses are considered part of the field</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    910905      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   value.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    911       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     906      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    912907      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       comment        = "(" *( ctext | quoted-pair | comment ) ")"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    913908      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       ctext          = &lt;any TEXT excluding "(" and ")"&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    914       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     909      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    915910      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A string of text is parsed as a single word if it is quoted using</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    916911      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   double-quote marks.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    917       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     912      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    918913      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       quoted-string  = ( &lt;"&gt; *(qdtext | quoted-pair ) &lt;"&gt; )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    919914      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       qdtext         = &lt;any TEXT except &lt;"&gt;&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    920       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     915      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    921916      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The backslash character ("\") MAY be used as a single-character</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    922917      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   quoting mechanism only within quoted-string and comment constructs.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    923       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     918      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    924919      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       quoted-pair    = "\" CHAR</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    925       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     920      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    926921      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.  Protocol Parameters</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    927       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     922      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    928923      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.1.  HTTP Version</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    929       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     924      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    930925      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP uses a "&lt;major&gt;.&lt;minor&gt;" numbering scheme to indicate versions</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    931926      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of the protocol.  The protocol versioning policy is intended to allow</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    941936      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   incremented when the format of a message within the protocol is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    942937      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   changed.  See RFC 2145 [RFC2145] for a fuller explanation.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    943       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     938      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    944939      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The version of an HTTP message is indicated by an HTTP-Version field</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    945940      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   in the first line of the message.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    946       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     941      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    947942      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          HTTP-Version   = "HTTP" "/" 1*DIGIT "." 1*DIGIT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    948       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    949       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Note that the major and</span> minor <span class="delete">numbers MUST be treated as separate</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     943      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     944      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Note that the major and minor numbers MUST be treated as separate</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    950945      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   integers and that each MAY be incremented higher than a single digit.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    951946      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Thus, HTTP/2.4 is a lower version than HTTP/2.13, which in turn is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    952947      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   lower than HTTP/12.3.  Leading zeros MUST be ignored by recipients</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    953948      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   and MUST NOT be sent.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    954       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     949      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    955950      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An application that sends a request or response message that includes</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    956951      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP-Version of "HTTP/1.1" MUST be at least conditionally compliant</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    960955      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message that is not compatible with HTTP/1.0.  For more details on</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    961956      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   when to send specific HTTP-Version values, see RFC 2145 [RFC2145].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    962       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     957      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    963958      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The HTTP version of an application is the highest HTTP version for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    964959      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   which the application is at least conditionally compliant.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    965       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     960      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    966961      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Proxy and gateway applications need to be careful when forwarding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    967962      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   messages in protocol versions different from that of the application.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    972967      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the request version, or respond with an error, or switch to tunnel</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    973968      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   behavior.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    974       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     969      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    975970      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Due to interoperability problems with HTTP/1.0 proxies discovered</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    976971      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   since the publication of RFC 2068 [RFC2068], caching proxies MUST,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    978973      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   version they support.  The proxy/gateway's response to that request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    979974      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   MUST be in the same major version as the request.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    980       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     975      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    981976      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: Converting between versions of HTTP may involve modification</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    982977      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      of header fields required or forbidden by the versions involved.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    983       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     978      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    984979      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.2.  Uniform Resource Identifiers</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    985       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     980      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    986981      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   URIs have been known by many names: WWW addresses, Universal Document</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    987982      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Identifiers, Universal Resource Identifiers [RFC1630], and finally</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    990985      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Identifiers are simply formatted strings which identify--via name,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    991986      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   location, or any other characteristic--a resource.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    992       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     987      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    993988      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.2.1.  General Syntax</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    994       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     989      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    995990      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   URIs in HTTP can be represented in absolute form or relative to some</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    996991      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   known base URI [RFC1808], depending upon the context of their use.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    1003998      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "absoluteURI", "relativeURI", "port", "host","abs_path", "rel_path",</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1004999      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   and "authority" from that specification.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1005       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1000      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10061001      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The HTTP protocol does not place any a priori limit on the length of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10071002      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   a URI.  Servers MUST be able to handle the URI of any resource they</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    10101005      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   SHOULD return 414 (Request-URI Too Long) status if a URI is longer</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10111006      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   than the server can handle (see Section 10.4.15).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1012       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1007      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10131008      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: Servers ought to be cautious about depending on URI lengths</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10141009      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      above 255 bytes, because some older client or proxy</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10151010      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      implementations might not properly support these lengths.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1016       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1011      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10171012      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.2.2.  http URL</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1018       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1013      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10191014      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The "http" scheme is used to locate network resources via the HTTP</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10201015      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   protocol.  This section defines the scheme-specific syntax and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10211016      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   semantics for http URLs.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1022       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1017      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10231018      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   http_URL = "http:" "//" host [ ":" port ] [ abs_path [ "?" query ]]</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1024       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1019      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10251020      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   If the port is empty or not given, port 80 is assumed.  The semantics</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10261021      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   are that the identified resource is located at the server listening</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    10341029      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   it received.  If a proxy receives a fully qualified domain name, the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10351030      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   proxy MUST NOT change the host name.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1036       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1031      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10371032      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.2.3.  URI Comparison</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1038       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1033      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10391034      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   When comparing two URIs to decide if they match or not, a client</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10401035      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   SHOULD use a case-sensitive octet-by-octet comparison of the entire</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10411036      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   URIs, with these exceptions:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1042       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1037      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10431038      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  A port that is empty or not given is equivalent to the default</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10441039      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      port for that URI-reference;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1045       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1040      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10461041      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  Comparisons of host names MUST be case-insensitive;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1047       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1042      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10481043      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  Comparisons of scheme names MUST be case-insensitive;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1049       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1044      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10501045      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  An empty abs_path is equivalent to an abs_path of "/".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1051       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1046      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10521047      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Characters other than those in the "reserved" and "unsafe" sets (see</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10531048      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   RFC 2396 [RFC2396]) are equivalent to their ""%" HEX HEX" encoding.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1054       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1049      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10551050      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   For example, the following three URIs are equivalent:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1056       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1051      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10571052      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      http://abc.com:80/~smith/home.html</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10581053      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      http://ABC.com/%7Esmith/home.html</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10591054      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      http://ABC.com:/%7esmith/home.html</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1060       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1055      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10611056      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.3.  Date/Time Formats</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1062       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1057      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10631058      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.3.1.  Full Date</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1064       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1059      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10651060      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP applications have historically allowed three different formats</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10661061      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   for the representation of date/time stamps:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1067       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1062      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10681063      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10691064      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10701065      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1071       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1066      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10721067      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The first format is preferred as an Internet standard and represents</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10731068      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   a fixed-length subset of that defined by RFC 1123 [RFC1123] (an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    10791074      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   representing HTTP-date values in header fields.  See Appendix A.3 for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10801075      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   further information.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1081       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1076      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10821077      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: Recipients of date values are encouraged to be robust in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10831078      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      accepting date values that may have been sent by non-HTTP</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10841079      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      applications, as is sometimes the case when retrieving or posting</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10851080      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      messages via proxies/gateways to SMTP or NNTP.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1086       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1081      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10871082      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   All HTTP date/time stamps MUST be represented in Greenwich Mean Time</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10881083      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (GMT), without exception.  For the purposes of HTTP, GMT is exactly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    10931088      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   additional LWS beyond that specifically included as SP in the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10941089      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   grammar.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1095       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1090      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10961091      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       HTTP-date    = rfc1123-date | rfc850-date | asctime-date</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10971092      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       rfc1123-date = wkday "," SP date1 SP time SP "GMT"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11131108      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                    | "May" | "Jun" | "Jul" | "Aug"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11141109      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                    | "Sep" | "Oct" | "Nov" | "Dec"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1115       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1110      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11161111      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Note: HTTP requirements for the date/time stamp format apply only to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11171112      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   their usage within the protocol stream.  Clients and servers are not</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11181113      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   required to use these formats for user presentation, request logging,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11191114      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   etc.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1120       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1115      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11211116      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.3.2.  Delta Seconds</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1122       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1117      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11231118      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Some HTTP header fields allow a time value to be specified as an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11241119      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   integer number of seconds, represented in decimal, after the time</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11251120      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that the message was received.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1126       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1121      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11271122      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       delta-seconds  = 1*DIGIT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1128       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1123      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11291124      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.4.  Character Sets</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1130       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1125      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11311126      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP uses the same definition of the term "character set" as that</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11321127      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   described for MIME:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1133       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1128      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11341129      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The term "character set" is used in this document to refer to a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11351130      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   method used with one or more tables to convert a sequence of octets</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11451140      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   to characters.  In particular, use of external profiling information</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11461141      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   to determine the exact mapping is not permitted.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1147       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1142      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11481143      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: This use of the term "character set" is more commonly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11491144      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      referred to as a "character encoding."  However, since HTTP and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11501145      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      MIME share the same registry, it is important that the terminology</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11511146      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      also be shared.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1152       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1147      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11531148      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP character sets are identified by case-insensitive tokens.  The</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11541149      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   complete set of tokens is defined by the IANA Character Set registry</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11551150      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   [RFC1700].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1156       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1151      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11571152      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       charset = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1158       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1153      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11591154      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Although HTTP allows an arbitrary token to be used as a charset</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11601155      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   value, any token that has a predefined value within the IANA</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11621157      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   defined by that registry.  Applications SHOULD limit their use of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11631158      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   character sets to those defined by the IANA registry.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1164       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1159      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11651160      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Implementors should be aware of IETF character set requirements</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11661161      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   [RFC2279] [RFC2277].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1167       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1162      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11681163      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.4.1.  Missing Charset</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1169       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1164      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11701165      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Some HTTP/1.0 software has interpreted a Content-Type header without</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11711166      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   charset parameter incorrectly to mean "recipient should guess."</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11731168      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   parameter even when the charset is ISO-8859-1 and SHOULD do so when</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11741169      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   it is known that it will not confuse the recipient.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1175       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1170      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11761171      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Unfortunately, some older HTTP/1.0 clients did not deal properly with</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11771172      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   an explicit charset parameter.  HTTP/1.1 recipients MUST respect the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11811176      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   recipient's preference, when initially displaying a document.  See</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11821177      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Section 3.7.1.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1183       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1178      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11841179      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.5.  Content Codings</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1185       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1180      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11861181      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Content coding values indicate an encoding transformation that has</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11871182      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   been or can be applied to an entity.  Content codings are primarily</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11901185      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   and without loss of information.  Frequently, the entity is stored in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11911186      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   coded form, transmitted directly, and only decoded by the recipient.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1192       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1187      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11931188      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       content-coding   = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1194       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1189      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11951190      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   All content-coding values are case-insensitive.  HTTP/1.1 uses</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    11961191      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   content-coding values in the Accept-Encoding (Section 14.3) and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    11991194      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   indicates what decoding mechanism will be required to remove the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12001195      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   encoding.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1201       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1196      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12021197      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Internet Assigned Numbers Authority (IANA) acts as a registry for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12031198      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   content-coding value tokens.  Initially, the registry contains the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12041199      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   following tokens:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1205       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1200      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12061201      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   gzip</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1207       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1202      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12081203      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      An encoding format produced by the file compression program "gzip"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12091204      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      (GNU zip) as described in RFC 1952 [RFC1952].  This format is a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12101205      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Lempel-Ziv coding (LZ77) with a 32 bit CRC.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1211       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1206      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12121207      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   compress</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1213       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1208      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12141209      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The encoding format produced by the common UNIX file compression</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12151210      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      program "compress".  This format is an adaptive Lempel-Ziv-Welch</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12161211      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      coding (LZW).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1217       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1212      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12181213      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Use of program names for the identification of encoding formats is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12191214      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      not desirable and is discouraged for future encodings.  Their use</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    12221217      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      applications SHOULD consider "x-gzip" and "x-compress" to be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12231218      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      equivalent to "gzip" and "compress" respectively.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1224       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1219      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12251220      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   deflate</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1226       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1221      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12271222      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The "zlib" format defined in RFC 1950 [RFC1950] in combination</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12281223      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      with the "deflate" compression mechanism described in RFC 1951</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12291224      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      [RFC1951].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1230       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1225      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12311226      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   identity</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1232       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1227      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12331228      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      The default (identity) encoding; the use of no transformation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12341229      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      whatsoever.  This content-coding is used only in the Accept-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12351230      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Encoding header, and SHOULD NOT be used in the Content-Encoding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12361231      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      header.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1237       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1232      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12381233      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   New content-coding value tokens SHOULD be registered; to allow</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12391234      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   interoperability between clients and servers, specifications of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    12411236      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   publicly available and adequate for independent implementation, and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12421237      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   conform to the purpose of content coding defined in this section.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1243       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1238      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12441239      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.6.  Transfer Codings</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1245       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1240      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12461241      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Transfer-coding values are used to indicate an encoding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12471242      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transformation that has been, can be, or may need to be applied to an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    12491244      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This differs from a content coding in that the transfer-coding is a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12501245      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   property of the message, not of the original entity.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1251       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1246      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12521247      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       transfer-coding         = "chunked" | transfer-extension</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12531248      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       transfer-extension      = token *( ";" parameter )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1254       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1249      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12551250      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Parameters are in the form of attribute/value pairs.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1256       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1251      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12571252      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       parameter               = attribute "=" value</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12581253      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       attribute               = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12591254      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       value                   = token | quoted-string</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1260       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1255      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12611256      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   All transfer-coding values are case-insensitive.  HTTP/1.1 uses</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12621257      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transfer-coding values in the TE header field (Section 14.39) and in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12631258      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the Transfer-Encoding header field (Section 14.41).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1264       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1259      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12651260      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Whenever a transfer-coding is applied to a message-body, the set of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12661261      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transfer-codings MUST include "chunked", unless the message is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    12701265      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   than once to a message-body.  These rules allow the recipient to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12711266      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   determine the transfer-length of the message (Section 4.4).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1272       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1267      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12731268      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Transfer-codings are analogous to the Content-Transfer-Encoding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12741269      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   values of MIME [RFC2045], which were designed to enable safe</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    12791274      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (Section 7.2.2), or the desire to encrypt data over a shared</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12801275      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transport.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1281       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1276      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12821277      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Internet Assigned Numbers Authority (IANA) acts as a registry for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12831278      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transfer-coding value tokens.  Initially, the registry contains the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    12851280      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   3.6.2), "gzip" (Section 3.5), "compress" (Section 3.5), and "deflate"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12861281      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (Section 3.5).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1287       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1282      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12881283      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   New transfer-coding value tokens SHOULD be registered in the same way</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12891284      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   as new content-coding value tokens (Section 3.5).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1290       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1285      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12911286      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A server which receives an entity-body with a transfer-coding it does</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12921287      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   not understand SHOULD return 501 (Unimplemented), and close the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12931288      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   connection.  A server MUST NOT send transfer-codings to an HTTP/1.0</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12941289      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   client.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1295       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1290      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12961291      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.6.1.  Chunked Transfer Coding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1297       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1292      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12981293      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The chunked encoding modifies the body of a message in order to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    12991294      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transfer it as a series of chunks, each with its own size indicator,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    13021297      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the information necessary for the recipient to verify that it has</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13031298      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   received the full message.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1304       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1299      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13051300      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Chunked-Body   = *chunk</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13061301      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        last-chunk</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13071302      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        trailer</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13081303      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1309       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1304      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13101305      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       chunk          = chunk-size [ chunk-extension ] CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13111306      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        chunk-data CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13121307      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       chunk-size     = 1*HEX</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13131308      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       last-chunk     = 1*("0") [ chunk-extension ] CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1314       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1309      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13151310      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       chunk-extension= *( ";" chunk-ext-name [ "=" chunk-ext-val ] )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13161311      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       chunk-ext-name = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    13181313      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       chunk-data     = chunk-size(OCTET)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13191314      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       trailer        = *(entity-header CRLF)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1320       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1315      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13211316      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The chunk-size field is a string of hex digits indicating the size of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13221317      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the chunk.  The chunked encoding is ended by any chunk whose size is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13231318      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   zero, followed by the trailer, which is terminated by an empty line.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1324       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1319      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13251320      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The trailer allows the sender to include additional HTTP header</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13261321      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   fields at the end of the message.  The Trailer header field can be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13271322      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   used to indicate which header fields are included in a trailer (see</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13281323      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Section 14.40).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1329       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1324      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13301325      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A server using chunked transfer-coding in a response MUST NOT use the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13311326      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   trailer for any header fields unless at least one of the following is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13321327      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   true:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1333       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1328      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13341329      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   1.  the request included a TE header field that indicates "trailers"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13351330      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       is acceptable in the transfer-coding of the response, as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    13421337      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       trailer fields might be silently discarded along the path to the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13431338      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       client.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1344       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1339      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13451340      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This requirement prevents an interoperability failure when the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13461341      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message is being received by an HTTP/1.1 (or later) proxy and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    13481343      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   compliance with the protocol would have necessitated a possibly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13491344      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   infinite buffer on the proxy.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1350       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1345      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13511346      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An example process for decoding a Chunked-Body is presented in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13521347      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Appendix A.4.6.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1353       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1348      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13541349      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   All HTTP/1.1 applications MUST be able to receive and decode the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13551350      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "chunked" transfer-coding, and MUST ignore chunk-extension extensions</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13561351      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   they do not understand.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1357       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1352      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13581353      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.7.  Media Types</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1359       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1354      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13601355      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP uses Internet Media Types [RFC1590] in the Content-Type</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13611356      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (Section 14.17) and Accept (Section 14.1) header fields in order to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13621357      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   provide open and extensible data typing and type negotiation.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1363       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1358      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13641359      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       media-type     = type "/" subtype *( ";" parameter )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13651360      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       type           = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13661361      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       subtype        = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1367       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1362      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13681363      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Parameters MAY follow the type/subtype in the form of attribute/value</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13691364      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   pairs (as defined in Section 3.6).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1370       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1365      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13711366      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The type, subtype, and parameter attribute names are case-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13721367      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   insensitive.  Parameter values might or might not be case-sensitive,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    13761371      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   might be significant to the processing of a media-type, depending on</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13771372      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   its definition within the media type registry.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1378       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1373      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13791374      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Note that some older HTTP applications do not recognize media type</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13801375      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   parameters.  When sending data to older HTTP applications,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13811376      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   implementations SHOULD only use media type parameters when they are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13821377      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   required by that type/subtype definition.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1383       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1378      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13841379      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Media-type values are registered with the Internet Assigned Number</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13851380      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Authority (IANA [RFC1700]).  The media type registration process is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13861381      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   outlined in RFC 1590 [RFC1590].  Use of non-registered media types is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13871382      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   discouraged.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1388       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1383      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13891384      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.7.1.  Canonicalization and Text Defaults</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1390       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1385      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13911386      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Internet media types are registered with a canonical form.  An</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13921387      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entity-body transferred via HTTP messages MUST be represented in the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13931388      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   appropriate canonical form prior to its transmission except for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13941389      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "text" types, as defined in the next paragraph.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1395       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1390      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13961391      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   When in canonical form, media subtypes of the "text" type use CRLF as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    13971392      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the text line break.  HTTP relaxes this requirement and allows the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14081403      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   or LF MUST NOT be substituted for CRLF within any of the HTTP control</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14091404      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   structures (such as header fields and multipart boundaries).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1410       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1405      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14111406      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   If an entity-body is encoded with a content-coding, the underlying</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14121407      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   data MUST be in a form defined above prior to being encoded.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1413       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1408      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14141409      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The "charset" parameter is used with some media types to define the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14151410      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   character set (Section 3.4) of the data.  When no explicit charset</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14191414      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   its subsets MUST be labeled with an appropriate charset value.  See</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14201415      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Section 3.4.1 for compatibility problems.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1421       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1416      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14221417      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.7.2.  Multipart Types</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1423       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1418      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14241419      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   MIME provides for a number of "multipart" types -- encapsulations of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14251420      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   one or more entities within a single message-body.  All multipart</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14341429      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message-body, wherein the "end" of the message-body is indicated by</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14351430      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the ending multipart boundary.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1436       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1431      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14371432      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In general, HTTP treats a multipart message-body no differently than</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14381433      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   any other media type: strictly as payload.  The one exception is the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14451440      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   body do not have any significance to HTTP beyond that defined by</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14461441      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   their MIME semantics.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1447       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1442      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14481443      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In general, an HTTP user agent SHOULD follow the same or similar</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14491444      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   behavior as a MIME user agent would upon receipt of a multipart type.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14501445      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   If an application receives an unrecognized multipart subtype, the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14511446      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   application MUST treat it as being equivalent to "multipart/mixed".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1452       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1447      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14531448      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: The "multipart/form-data" type has been specifically defined</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14541449      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      for carrying form data suitable for processing via the POST</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14551450      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      request method, as described in RFC 1867 [RFC1867].</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1456       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1451      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14571452      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.8.  Product Tokens</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1458       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1453      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14591454      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Product tokens are used to allow communicating applications to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14601455      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   identify themselves by software name and version.  Most fields using</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14631458      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   convention, the products are listed in order of their significance</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14641459      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   for identifying the application.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1465       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1460      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14661461      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       product         = token ["/" product-version]</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14671462      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       product-version = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1468       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1463      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14691464      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Examples:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1470       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1465      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14711466      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       User-Agent: CERN-LineMode/2.15 libwww/2.17b3</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14721467      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Server: Apache/0.8.4</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1473       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1468      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14741469      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Product tokens SHOULD be short and to the point.  They MUST NOT be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14751470      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   used for advertising or other non-essential information.  Although</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14781473      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   versions of the same product SHOULD only differ in the product-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14791474      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   version portion of the product value).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1480       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1475      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14811476      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.9.  Quality Values</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1482       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1477      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14831478      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP content negotiation (Section 12) uses short "floating point"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14841479      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   numbers to indicate the relative importance ("weight") of various</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    14901485      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   decimal point.  User configuration of these values SHOULD also be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14911486      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   limited in this fashion.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1492       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1487      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14931488      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       qvalue         = ( "0" [ "." 0*3DIGIT ] )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14941489      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | ( "1" [ "." 0*3("0") ] )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1495       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1490      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14961491      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "Quality values" is a misnomer, since these values merely represent</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14971492      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   relative degradation in desired quality.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1498       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1493      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    14991494      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.10.  Language Tags</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1500       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1495      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15011496      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A language tag identifies a natural language spoken, written, or</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15021497      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   otherwise conveyed by human beings for communication of information</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    15041499      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP uses language tags within the Accept-Language and Content-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15051500      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Language fields.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1506       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1501      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15071502      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The syntax and registry of HTTP language tags is the same as that</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15081503      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   defined by RFC 1766 [RFC1766].  In summary, a language tag is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15091504      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   composed of 1 or more parts: A primary language tag and a possibly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15101505      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   empty series of subtags:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1511       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1506      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15121507      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        language-tag  = primary-tag *( "-" subtag )</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15131508      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        primary-tag   = 1*8ALPHA</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15141509      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        subtag        = 1*8ALPHA</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1515       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1510      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15161511      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   White space is not allowed within the tag and all tags are case-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15171512      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   insensitive.  The name space of language tags is administered by the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15181513      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   IANA.  Example tags include:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1519       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1514      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15201515      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       en, en-US, en-cockney, i-cherokee, x-pig-latin</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1521       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1516      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15221517      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   where any two-letter primary-tag is an ISO-639 language abbreviation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15231518      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   and any two-letter initial subtag is an ISO-3166 country code.  (The</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15241519      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   last three tags above are not registered tags; all but the last are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15251520      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   examples of tags which could be registered in future.)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1526       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1521      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15271522      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.11.  Entity Tags</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1528       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1523      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15291524      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Entity tags are used for comparing two or more entities from the same</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15301525      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   requested resource.  HTTP/1.1 uses entity tags in the ETag</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    15341529      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   in Section 13.3.3.  An entity tag consists of an opaque quoted</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15351530      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   string, possibly prefixed by a weakness indicator.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1536       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1531      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15371532      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      entity-tag = [ weak ] opaque-tag</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15381533      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      weak       = "W/"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15391534      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      opaque-tag = quoted-string</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1540       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1535      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15411536      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A "strong entity tag" MAY be shared by two entities of a resource</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15421537      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   only if they are equivalent by octet equality.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1543       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1538      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15441539      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A "weak entity tag," indicated by the "W/" prefix, MAY be shared by</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15451540      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   two entities of a resource only if the entities are equivalent and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15461541      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   could be substituted for each other with no significant change in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15471542      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   semantics.  A weak entity tag can only be used for weak comparison.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1548       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1543      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15491544      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An entity tag MUST be unique across all versions of all entities</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15501545      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   associated with a particular resource.  A given entity tag value MAY</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    15531548      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   requests on different URIs does not imply the equivalence of those</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15541549      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entities.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1555       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1550      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15561551      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">3.12.  Range Units</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1557       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1552      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15581553      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP/1.1 allows a client to request that only part (a range of) the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15591554      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   response entity be included within the response.  HTTP/1.1 uses range</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    15611556      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   header fields.  An entity can be broken down into subranges according</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15621557      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   to various structural units.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1563       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1558      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15641559      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      range-unit       = bytes-unit | other-range-unit</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15651560      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      bytes-unit       = "bytes"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15661561      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      other-range-unit = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1567       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1562      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15681563      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The only range unit defined by HTTP/1.1 is "bytes".  HTTP/1.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15691564      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   implementations MAY ignore ranges specified using other units.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1570       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1565      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15711566      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP/1.1 has been designed to allow implementations of applications</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15721567      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that do not depend on knowledge of ranges.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1573       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1568      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15741569      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.  HTTP Message</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1575       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1570      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15761571      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.1.  Message Types</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1577       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1572      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15781573      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP messages consist of requests from client to server and responses</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15791574      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   from server to client.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1580       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1575      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15811576      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       HTTP-message   = Request | Response     ; HTTP/1.1 messages</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1582       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1577      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15831578      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Request (Section 5) and Response (Section 6) messages use the generic</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15841579      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message format of RFC 822 [RFC822] for transferring entities (the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    15871582      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   line (i.e., a line with nothing preceding the CRLF) indicating the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15881583      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   end of the header fields, and possibly a message-body.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1589       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1584      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15901585      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        generic-message = start-line</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15911586      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                          *(message-header CRLF)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    15931588      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                          [ message-body ]</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15941589      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        start-line      = Request-Line | Status-Line</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1595       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1590      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15961591      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In the interest of robustness, servers SHOULD ignore any empty</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15971592      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   line(s) received where a Request-Line is expected.  In other words,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15981593      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   if the server is reading the protocol stream at the beginning of a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    15991594      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message and receives a CRLF first, it should ignore the CRLF.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1600       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1595      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16011596      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Certain buggy HTTP/1.0 client implementations generate extra CRLF's</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16021597      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   after a POST request.  To restate what is explicitly forbidden by the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16031598      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   BNF, an HTTP/1.1 client MUST NOT preface or follow a request with an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16041599      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   extra CRLF.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1605       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1600      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16061601      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.2.  Message Headers</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1607       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1602      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16081603      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP header fields, which include general-header (Section 4.5),</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16091604      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request-header (Section 5.3), response-header (Section 6.2), and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16181613      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   since there might exist some implementations that fail to accept</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16191614      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   anything beyond the common forms.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1620       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1615      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16211616      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       message-header = field-name ":" [ field-value ]</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16221617      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       field-name     = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16251620      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        and consisting of either *TEXT or combinations</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16261621      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        of token, separators, and quoted-string&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1627       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1622      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16281623      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The field-content does not include any leading or trailing LWS:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16291624      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   linear white space occurring before the first non-whitespace</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16341629      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   before interpreting the field value or forwarding the message</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16351630      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   downstream.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1636       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1631      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16371632      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The order in which header fields with differing field names are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16381633      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   received is not significant.  However, it is "good practice" to send</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16391634      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   general-header fields first, followed by request-header or response-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16401635      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   header fields, and ending with the entity-header fields.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1641       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1636      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16421637      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Multiple message-header fields with the same field-name MAY be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16431638      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   present in a message if and only if the entire field-value for that</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16501645      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   interpretation of the combined field value, and thus a proxy MUST NOT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16511646      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   change the order of these field values when a message is forwarded.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1652       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1647      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16531648      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.3.  Message Body</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1654       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1649      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16551650      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The message-body (if any) of an HTTP message is used to carry the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16561651      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entity-body associated with the request or response.  The message-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16581653      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   been applied, as indicated by the Transfer-Encoding header field</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16591654      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (Section 14.41).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1660       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1655      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16611656      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       message-body = entity-body</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16621657      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                    | &lt;entity-body encoded as per Transfer-Encoding&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1663       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1658      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16641659      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Transfer-Encoding MUST be used to indicate any transfer-codings</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16651660      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   applied by an application to ensure safe and proper transfer of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16681663      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request/response chain.  (However, Section 3.6 places restrictions on</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16691664      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   when certain transfer-codings may be used.)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1670       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1665      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16711666      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The rules for when a message-body is allowed in a message differ for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16721667      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   requests and responses.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1673       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1668      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16741669      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The presence of a message-body in a request is signaled by the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16751670      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   inclusion of a Content-Length or Transfer-Encoding header field in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16801675      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request method does not include defined semantics for an entity-body,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16811676      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   then the message-body SHOULD be ignored when handling the request.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1682       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1677      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16831678      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   For response messages, whether or not a message-body is included with</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16841679      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   a message is dependent on both the request method and the response</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16891684      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   MUST NOT include a message-body.  All other responses do include a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16901685      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message-body, although it MAY be of zero length.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1691       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1686      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16921687      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.4.  Message Length</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1693       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1688      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16941689      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The transfer-length of a message is the length of the message-body as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16951690      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   it appears in the message; that is, after any transfer-codings have</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    16971692      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   transfer-length of that body is determined by one of the following</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    16981693      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (in order of precedence):</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1699       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1694      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17001695      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   1.  Any response message which "MUST NOT" include a message-body</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17011696      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       (such as the 1xx, 204, and 304 responses and any response to a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17031698      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       the header fields, regardless of the entity-header fields present</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17041699      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       in the message.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1705       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1700      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17061701      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   2.  If a Transfer-Encoding header field (Section 14.41) is present</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17071702      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       and has any value other than "identity", then the transfer-length</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17081703      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       is defined by use of the "chunked" transfer-coding (Section 3.6),</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17091704      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       unless the message is terminated by closing the connection.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1710       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1705      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17111706      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   3.  If a Content-Length header field (Section 14.13) is present, its</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17121707      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       decimal value in OCTETs represents both the entity-length and the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17161711      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       both a Transfer-Encoding header field and a Content-Length header</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17171712      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       field, the latter MUST be ignored.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1718       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1713      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17191714      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   4.  If the message uses the media type "multipart/byteranges", and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17201715      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       the ransfer-length is not otherwise specified, then this self-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17241719      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       ultiple byte-range specifiers from a 1.1 client implies that the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17251720      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       lient can parse multipart/byteranges responses.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1726       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1721      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17271722      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          A range header might be forwarded by a 1.0 proxy that does not</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17281723      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          understand multipart/byteranges; in this case the server MUST</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17291724      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          delimit the message using methods defined in items 1, 3 or 5</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17301725      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          of this section.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1731       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1726      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17321727      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   5.  By the server closing the connection.  (Closing the connection</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17331728      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       cannot be used to indicate the end of a request body, since that</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17341729      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       would leave no possibility for the server to send back a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17351730      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       response.)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1736       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1731      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17371732      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   For compatibility with HTTP/1.0 applications, HTTP/1.1 requests</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17381733      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   containing a message-body MUST include a valid Content-Length header</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17421737      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   determine the length of the message, or with 411 (length required) if</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17431738      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   it wishes to insist on receiving a valid Content-Length.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1744       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1739      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17451740      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   All HTTP/1.1 applications that receive entities MUST accept the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17461741      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "chunked" transfer-coding (Section 3.6), thus allowing this mechanism</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17471742      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   to be used for messages when the message length cannot be determined</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17481743      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   in advance.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1749       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1744      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17501745      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Messages MUST NOT include both a Content-Length header field and a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17511746      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   non-identity transfer-coding.  If the message does include a non-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17521747      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   identity transfer-coding, the Content-Length MUST be ignored.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1753       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1748      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17541749      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   When a Content-Length is given in a message where a message-body is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17551750      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   allowed, its field value MUST exactly match the number of OCTETs in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17561751      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the message-body.  HTTP/1.1 user agents MUST notify the user when an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17571752      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   invalid length is received and detected.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1758       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1753      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17591754      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.5.  General Header Fields</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1760       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1755      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17611756      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   There are a few header fields which have general applicability for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17621757      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   both request and response messages, but which do not apply to the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17631758      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entity being transferred.  These header fields apply only to the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17641759      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   message being transmitted.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1765       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1760      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17661761      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       general-header = Cache-Control            ; Section 14.9</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17671762      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | Connection               ; Section 14.10</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17731768      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | Via                      ; Section 14.45</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17741769      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | Warning                  ; Section 14.46</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1775       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1770      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17761771      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   General-header field names can be extended reliably only in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17771772      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   combination with a change in the protocol version.  However, new or</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17801775      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   be general-header fields.  Unrecognized header fields are treated as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17811776      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entity-header fields.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1782       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1777      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17831778      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">5.  Request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1784       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1779      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17851780      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A request message from a client to a server includes, within the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17861781      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   first line of that message, the method to be applied to the resource,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17871782      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the identifier of the resource, and the protocol version in use.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1788       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1783      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17891784      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        Request       = Request-Line              ; Section 5.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17901785      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        *(( general-header        ; Section 4.5</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    17931788      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17941789      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                        [ message-body ]          ; Section 4.3</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1795       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1790      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17961791      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">5.1.  Request-Line</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1797       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1792      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17981793      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Request-Line begins with a method token, followed by the Request-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    17991794      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   URI and the protocol version, and ending with CRLF.  The elements are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18001795      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   separated by SP characters.  No CR or LF is allowed except in the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18011796      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   final CRLF sequence.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1802       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1797      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18031798      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">        Request-Line   = Method SP Request-URI SP HTTP-Version CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1804       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1799      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18051800      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">5.1.1.  Method</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1806       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1801      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18071802      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Method token indicates the method to be performed on the resource</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18081803      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   identified by the Request-URI.  The method is case-sensitive.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1809       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1804      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18101805      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Method         = "OPTIONS"                ; Section 9.2</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18111806      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | "GET"                    ; Section 9.3</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18181813      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | extension-method</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18191814      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       extension-method = token</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1820       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1815      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18211816      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The list of methods allowed by a resource can be specified in an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18221817      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Allow header field (Section 14.7).  The return code of the response</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18311826      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   implemented, they MUST be implemented with the same semantics as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18321827      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   those specified in Section 9.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1833       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1828      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18341829      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">5.1.2.  Request-URI</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1835       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1830      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18361831      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Request-URI is a Uniform Resource Identifier (Section 3.2) and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18371832      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   identifies the resource upon which to apply the request.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1838       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1833      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18391834      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Request-URI    = "*" | absoluteURI | abs_path | authority</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1840       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1835      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18411836      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The four options for Request-URI are dependent on the nature of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18421837      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request.  The asterisk "*" means that the request does not apply to a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18441839      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   when the method used does not necessarily apply to a resource.  One</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18451840      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   example would be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1846       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1841      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18471842      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       OPTIONS * HTTP/1.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1848       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1843      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18491844      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The absoluteURI form is REQUIRED when the request is being made to a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18501845      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   proxy.  The proxy is requested to forward the request or service it</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18551850      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   any aliases, local variations, and the numeric IP address.  An</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18561851      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   example Request-Line would be:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1857       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1852      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18581853      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       GET http://www.w3.org/pub/WWW/TheProject.html HTTP/1.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1859       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1854      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18601855      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   To allow for transition to absoluteURIs in all requests in future</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18611856      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   versions of HTTP, all HTTP/1.1 servers MUST accept the absoluteURI</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18621857      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   form in requests, even though HTTP/1.1 clients will only generate</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18631858      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   them in requests to proxies.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1864       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1859      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18651860      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The authority form is only used by the CONNECT method (Section 9.9).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1866       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1861      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18671862      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The most common form of Request-URI is that used to identify a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18681863      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   resource on an origin server or gateway.  In this case the absolute</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18731868      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   create a TCP connection to port 80 of the host "www.w3.org" and send</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18741869      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the lines:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1875       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1870      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18761871      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       GET /pub/WWW/TheProject.html HTTP/1.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18771872      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Host: www.w3.org</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1878       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1873      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18791874      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   followed by the remainder of the Request.  Note that the absolute</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18801875      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   path cannot be empty; if none is present in the original URI, it MUST</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18811876      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   be given as "/" (the server root).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1882       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1877      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18831878      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Request-URI is transmitted in the format specified in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18841879      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Section 3.2.1.  If the Request-URI is encoded using the "% HEX HEX"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18861881      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   order to properly interpret the request.  Servers SHOULD respond to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18871882      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   invalid Request-URIs with an appropriate status code.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1888       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1883      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18891884      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   A transparent proxy MUST NOT rewrite the "abs_path" part of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18901885      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   received Request-URI when forwarding it to the next inbound server,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18911886      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   except as noted above to replace a null abs_path with "/".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1892       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1887      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18931888      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: The "no rewrite" rule prevents the proxy from changing the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18941889      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      meaning of the request when the origin server is improperly using</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18961891      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      should be aware that some pre-HTTP/1.1 proxies have been known to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18971892      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      rewrite the Request-URI.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1898       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1893      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18991894      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">5.2.  The Resource Identified by a Request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1900       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1895      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19011896      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The exact resource identified by an Internet request is determined by</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19021897      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   examining both the Request-URI and the Host header field.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1903       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1898      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19041899      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An origin server that does not allow resources to differ by the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19051900      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   requested host MAY ignore the Host header field value when</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19061901      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   determining the resource identified by an HTTP/1.1 request.  (But see</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19071902      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Appendix A.6.1.1 for other requirements on Host support in HTTP/1.1.)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1908       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1903      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19091904      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An origin server that does differentiate resources based on the host</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19101905      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   requested (sometimes referred to as virtual hosts or vanity host</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19111906      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   names) MUST use the following rules for determining the requested</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19121907      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   resource on an HTTP/1.1 request:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1913       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1908      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19141909      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   1.  If Request-URI is an absoluteURI, the host is part of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19151910      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Request-URI.  Any Host header field value in the request MUST be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19161911      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       ignored.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1917       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1912      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19181913      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   2.  If the Request-URI is not an absoluteURI, and the request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19191914      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       includes a Host header field, the host is determined by the Host</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19201915      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       header field value.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1921       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1916      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19221917      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   3.  If the host as determined by rule 1 or 2 is not a valid host on</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19231918      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       the server, the response MUST be a 400 (Bad Request) error</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19241919      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       message.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1925       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1920      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19261921      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Recipients of an HTTP/1.0 request that lacks a Host header field MAY</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19271922      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   attempt to use heuristics (e.g., examination of the URI path for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19281923      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   something unique to a particular host) in order to determine what</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19291924      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   exact resource is being requested.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1930       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1925      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19311926      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">5.3.  Request Header Fields</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1932       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1927      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19331928      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The request-header fields allow the client to pass additional</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19341929      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   information about the request, and about the client itself, to the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    19361931      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   equivalent to the parameters on a programming language method</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19371932      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   invocation.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1938       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1933      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19391934      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       request-header = Accept                   ; Section 14.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19401935      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | Accept-Charset           ; Section 14.2</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    19561951      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | TE                       ; Section 14.39</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19571952      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                      | User-Agent               ; Section 14.43</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1958       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1953      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19591954      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Request-header field names can be extended reliably only in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19601955      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   combination with a change in the protocol version.  However, new or</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    19631958      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   be request-header fields.  Unrecognized header fields are treated as</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19641959      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entity-header fields.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1965       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1960      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19661961      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">6.  Response</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1967       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1962      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19681963      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   After receiving and interpreting a request message, a server responds</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19691964      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   with an HTTP response message.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1970       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1965      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19711966      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Response      = Status-Line               ; Section 6.1</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19721967      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                       *(( general-header        ; Section 4.5</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    19751970      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                       CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19761971      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                       [ message-body ]          ; Section 7.2</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1977       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1972      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19781973      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">6.1.  Status-Line</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1979       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1974      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19801975      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The first line of a Response message is the Status-Line, consisting</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19811976      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of the protocol version followed by a numeric status code and its</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    19831978      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   characters.  No CR or LF is allowed except in the final CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19841979      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   sequence.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1985       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1980      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19861981      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1987       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1982      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19881983      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">6.1.1.  Status Code and Reason Phrase</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1989       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1984      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19901985      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Status-Code element is a 3-digit integer result code of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19911986      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   attempt to understand and satisfy the request.  These codes are fully</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    19951990      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   user.  The client is not required to examine or display the Reason-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19961991      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Phrase.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    1997       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1992      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19981993      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The first digit of the Status-Code defines the class of response.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    19991994      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The last two digits do not have any categorization role.  There are 5</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20001995      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   values for the first digit:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2001       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1996      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20021997      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  1xx: Informational - Request received, continuing process</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2003       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1998      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20041999      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  2xx: Success - The action was successfully received, understood,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20052000      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      and accepted</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2006       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2001      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20072002      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  3xx: Redirection - Further action must be taken in order to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20082003      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      complete the request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2009       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2004      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20102005      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  4xx: Client Error - The request contains bad syntax or cannot be</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20112006      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      fulfilled</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2012       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2007      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20132008      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  5xx: Server Error - The server failed to fulfill an apparently</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20142009      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      valid request</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2015       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2010      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20162011      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The individual values of the numeric status codes defined for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20172012      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP/1.1, and an example set of corresponding Reason-Phrase's, are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    20192014      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   recommendations -- they MAY be replaced by local equivalents without</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20202015      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   affecting the protocol.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2021       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2016      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20222017      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Status-Code    =</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20232018      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">            "100"  ; Section 10.1.1: Continue</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    20622057      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          | "505"  ; Section 10.5.6: HTTP Version not supported</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20632058      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">          | extension-code</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2064       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2059      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20652060      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      extension-code = 3DIGIT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20662061      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Reason-Phrase  = *&lt;TEXT, excluding CR, LF&gt;</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2067       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2062      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20682063      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP status codes are extensible.  HTTP applications are not required</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20692064      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   to understand the meaning of all registered status codes, though such</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    20792074      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   with the response, since that entity is likely to include human-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20802075      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   readable information which will explain the unusual status.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2081       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     2076      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    20822077      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">6.2.  Response Header Fields</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    2083       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock">