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40<body > 
41  <table border="0" cellpadding="0" cellspacing="0"> 
42  <tr bgcolor="orange"><th></th><th>&nbsp;draft-ietf-httpbis-p2-semantics-01.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p2-semantics-02.txt&nbsp;</th><th></th></tr> 
43      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
44      <tr><td class="lineno" valign="top"></td><td class="left">Network Working Group                                   R. Fielding, Ed.</td><td> </td><td class="right">Network Working Group                                   R. Fielding, Ed.</td><td class="lineno" valign="top"></td></tr>
45      <tr><td class="lineno" valign="top"></td><td class="left">Internet-Draft                                              Day Software</td><td> </td><td class="right">Internet-Draft                                              Day Software</td><td class="lineno" valign="top"></td></tr>
46      <tr><td class="lineno" valign="top"></td><td class="left">Obsoletes: 2616 (if approved)                                  J. Gettys</td><td> </td><td class="right">Obsoletes: 2616 (if approved)                                  J. Gettys</td><td class="lineno" valign="top"></td></tr>
47      <tr><td class="lineno" valign="top"></td><td class="left">Intended status: Standards Track                    One Laptop per Child</td><td> </td><td class="right">Intended status: Standards Track                    One Laptop per Child</td><td class="lineno" valign="top"></td></tr>
48      <tr><td><a name="diff0001" /></td></tr>
49      <tr><td class="lineno" valign="top"></td><td class="lblock">Expires: <span class="delete">July 15, 2008  </span>                                        J. Mogul</td><td> </td><td class="rblock">Expires: <span class="insert">August 27, 2008</span>                                        J. Mogul</td><td class="lineno" valign="top"></td></tr>
50      <tr><td class="lineno" valign="top"></td><td class="left">                                                                      HP</td><td> </td><td class="right">                                                                      HP</td><td class="lineno" valign="top"></td></tr>
51      <tr><td class="lineno" valign="top"></td><td class="left">                                                              H. Frystyk</td><td> </td><td class="right">                                                              H. Frystyk</td><td class="lineno" valign="top"></td></tr>
52      <tr><td class="lineno" valign="top"></td><td class="left">                                                               Microsoft</td><td> </td><td class="right">                                                               Microsoft</td><td class="lineno" valign="top"></td></tr>
53      <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>
54      <tr><td class="lineno" valign="top"></td><td class="left">                                                           Adobe Systems</td><td> </td><td class="right">                                                           Adobe Systems</td><td class="lineno" valign="top"></td></tr>
55      <tr><td class="lineno" valign="top"></td><td class="left">                                                                P. Leach</td><td> </td><td class="right">                                                                P. Leach</td><td class="lineno" valign="top"></td></tr>
56      <tr><td class="lineno" valign="top"></td><td class="left">                                                               Microsoft</td><td> </td><td class="right">                                                               Microsoft</td><td class="lineno" valign="top"></td></tr>
57      <tr><td class="lineno" valign="top"></td><td class="left">                                                          T. Berners-Lee</td><td> </td><td class="right">                                                          T. Berners-Lee</td><td class="lineno" valign="top"></td></tr>
58      <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>
59      <tr><td class="lineno" valign="top"></td><td class="left">                                                           Y. Lafon, Ed.</td><td> </td><td class="right">                                                           Y. Lafon, Ed.</td><td class="lineno" valign="top"></td></tr>
60      <tr><td class="lineno" valign="top"></td><td class="left">                                                                     W3C</td><td> </td><td class="right">                                                                     W3C</td><td class="lineno" valign="top"></td></tr>
61      <tr><td class="lineno" valign="top"></td><td class="left">                                                         J. Reschke, Ed.</td><td> </td><td class="right">                                                         J. Reschke, Ed.</td><td class="lineno" valign="top"></td></tr>
62      <tr><td class="lineno" valign="top"></td><td class="left">                                                              greenbytes</td><td> </td><td class="right">                                                              greenbytes</td><td class="lineno" valign="top"></td></tr>
63      <tr><td><a name="diff0002" /></td></tr>
64      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                       <span class="delete"> January 12</span>, 2008</td><td> </td><td class="rblock">                                                       <span class="insert">February 24</span>, 2008</td><td class="lineno" valign="top"></td></tr>
65      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
66      <tr><td class="lineno" valign="top"></td><td class="left">                  HTTP/1.1, part 2: Message Semantics</td><td> </td><td class="right">                  HTTP/1.1, part 2: Message Semantics</td><td class="lineno" valign="top"></td></tr>
67      <tr><td><a name="diff0003" /></td></tr>
68      <tr><td class="lineno" valign="top"></td><td class="lblock">                   draft-ietf-httpbis-p2-semantics-0<span class="delete">1</span></td><td> </td><td class="rblock">                   draft-ietf-httpbis-p2-semantics-0<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
69      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
70      <tr><td class="lineno" valign="top"></td><td class="left">Status of this Memo</td><td> </td><td class="right">Status of this Memo</td><td class="lineno" valign="top"></td></tr>
71      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
72      <tr><td class="lineno" valign="top"></td><td class="left">   By submitting this Internet-Draft, each author represents that any</td><td> </td><td class="right">   By submitting this Internet-Draft, each author represents that any</td><td class="lineno" valign="top"></td></tr>
73      <tr><td class="lineno" valign="top"></td><td class="left">   applicable patent or other IPR claims of which he or she is aware</td><td> </td><td class="right">   applicable patent or other IPR claims of which he or she is aware</td><td class="lineno" valign="top"></td></tr>
74      <tr><td class="lineno" valign="top"></td><td class="left">   have been or will be disclosed, and any of which he or she becomes</td><td> </td><td class="right">   have been or will be disclosed, and any of which he or she becomes</td><td class="lineno" valign="top"></td></tr>
75      <tr><td class="lineno" valign="top"></td><td class="left">   aware will be disclosed, in accordance with Section 6 of BCP 79.</td><td> </td><td class="right">   aware will be disclosed, in accordance with Section 6 of BCP 79.</td><td class="lineno" valign="top"></td></tr>
76      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
77      <tr><td class="lineno" valign="top"></td><td class="left">   Internet-Drafts are working documents of the Internet Engineering</td><td> </td><td class="right">   Internet-Drafts are working documents of the Internet Engineering</td><td class="lineno" valign="top"></td></tr>
78      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF), its areas, and its working groups.  Note that</td><td> </td><td class="right">   Task Force (IETF), its areas, and its working groups.  Note that</td><td class="lineno" valign="top"></td></tr>
79      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
80      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 1, line 49</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 1, line 49</em></th><td></td></tr>
81      <tr><td class="lineno" valign="top"></td><td class="left">   and may be updated, replaced, or obsoleted by other documents at any</td><td> </td><td class="right">   and may be updated, replaced, or obsoleted by other documents at any</td><td class="lineno" valign="top"></td></tr>
82      <tr><td class="lineno" valign="top"></td><td class="left">   time.  It is inappropriate to use Internet-Drafts as reference</td><td> </td><td class="right">   time.  It is inappropriate to use Internet-Drafts as reference</td><td class="lineno" valign="top"></td></tr>
83      <tr><td class="lineno" valign="top"></td><td class="left">   material or to cite them other than as "work in progress."</td><td> </td><td class="right">   material or to cite them other than as "work in progress."</td><td class="lineno" valign="top"></td></tr>
84      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
85      <tr><td class="lineno" valign="top"></td><td class="left">   The list of current Internet-Drafts can be accessed at</td><td> </td><td class="right">   The list of current Internet-Drafts can be accessed at</td><td class="lineno" valign="top"></td></tr>
86      <tr><td class="lineno" valign="top"></td><td class="left">   http://www.ietf.org/ietf/1id-abstracts.txt.</td><td> </td><td class="right">   http://www.ietf.org/ietf/1id-abstracts.txt.</td><td class="lineno" valign="top"></td></tr>
87      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
88      <tr><td class="lineno" valign="top"></td><td class="left">   The list of Internet-Draft Shadow Directories can be accessed at</td><td> </td><td class="right">   The list of Internet-Draft Shadow Directories can be accessed at</td><td class="lineno" valign="top"></td></tr>
89      <tr><td class="lineno" valign="top"></td><td class="left">   http://www.ietf.org/shadow.html.</td><td> </td><td class="right">   http://www.ietf.org/shadow.html.</td><td class="lineno" valign="top"></td></tr>
90      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
91      <tr><td><a name="diff0004" /></td></tr>
92      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">July 15</span>, 2008.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">August 27</span>, 2008.</td><td class="lineno" valign="top"></td></tr>
93      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
94      <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>
95      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
96      <tr><td class="lineno" valign="top"></td><td class="left">   Copyright (C) The IETF Trust (2008).</td><td> </td><td class="right">   Copyright (C) The IETF Trust (2008).</td><td class="lineno" valign="top"></td></tr>
97      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
98      <tr><td class="lineno" valign="top"></td><td class="left">Abstract</td><td> </td><td class="right">Abstract</td><td class="lineno" valign="top"></td></tr>
99      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
100      <tr><td class="lineno" valign="top"></td><td class="left">   The Hypertext Transfer Protocol (HTTP) is an application-level</td><td> </td><td class="right">   The Hypertext Transfer Protocol (HTTP) is an application-level</td><td class="lineno" valign="top"></td></tr>
101      <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>
102      <tr><td class="lineno" valign="top"></td><td class="left">   systems.  HTTP has been in use by the World Wide Web global</td><td> </td><td class="right">   systems.  HTTP has been in use by the World Wide Web global</td><td class="lineno" valign="top"></td></tr>
103      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
104      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 3, line 9</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 3, line 9</em></th><td></td></tr>
105      <tr><td class="lineno" valign="top"></td><td class="left">   This draft incorporates those issue resolutions that were either</td><td> </td><td class="right">   This draft incorporates those issue resolutions that were either</td><td class="lineno" valign="top"></td></tr>
106      <tr><td class="lineno" valign="top"></td><td class="left">   collected in the original RFC2616 errata list</td><td> </td><td class="right">   collected in the original RFC2616 errata list</td><td class="lineno" valign="top"></td></tr>
107      <tr><td class="lineno" valign="top"></td><td class="left">   (&lt;http://purl.org/NET/http-errata&gt;), or which were agreed upon on the</td><td> </td><td class="right">   (&lt;http://purl.org/NET/http-errata&gt;), or which were agreed upon on the</td><td class="lineno" valign="top"></td></tr>
108      <tr><td class="lineno" valign="top"></td><td class="left">   mailing list between October 2006 and November 2007 (as published in</td><td> </td><td class="right">   mailing list between October 2006 and November 2007 (as published in</td><td class="lineno" valign="top"></td></tr>
109      <tr><td class="lineno" valign="top"></td><td class="left">   "draft-lafon-rfc2616bis-03").</td><td> </td><td class="right">   "draft-lafon-rfc2616bis-03").</td><td class="lineno" valign="top"></td></tr>
110      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
111      <tr><td class="lineno" valign="top"></td><td class="left">Table of Contents</td><td> </td><td class="right">Table of Contents</td><td class="lineno" valign="top"></td></tr>
112      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
113      <tr><td class="lineno" valign="top"></td><td class="left">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
114      <tr><td class="lineno" valign="top"></td><td class="left">     1.1.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">     1.1.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
115      <tr><td><a name="diff0005" /></td></tr>
116      <tr><td class="lineno" valign="top"></td><td class="lblock">   2.  <span class="delete">Product Tokens . . . . . . . . . . . . . .</span> . . . . . . . . . .  6</td><td> </td><td class="rblock">   2.  <span class="insert">Notational Conventions and Generic Grammar</span> . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
117      <tr><td class="lineno" valign="top"></td><td class="lblock">   3.  Method . . . . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="delete">7</span></td><td> </td><td class="rblock">   3.  Method . . . . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
118      <tr><td class="lineno" valign="top"></td><td class="lblock">   4.  Request Header Fields  . . . . . . . . . . . . . . . . . . . .  <span class="delete">7</span></td><td> </td><td class="rblock">   4.  Request Header Fields  . . . . . . . . . . . . . . . . . . . .  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
119      <tr><td class="lineno" valign="top"></td><td class="lblock">   5.  Status Code and Reason Phrase  . . . . . . . . . . . . . . . .  <span class="delete">8</span></td><td> </td><td class="rblock">   5.  Status Code and Reason Phrase  . . . . . . . . . . . . . . . .  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
120      <tr><td class="lineno" valign="top"></td><td class="lblock">   6.  Response Header Fields . . . . . . . . . . . . . . . . . . . . <span class="delete">10</span></td><td> </td><td class="rblock">   6.  Response Header Fields . . . . . . . . . . . . . . . . . . . . <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
121      <tr><td class="lineno" valign="top"></td><td class="lblock">   7.  Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">10</span></td><td> </td><td class="rblock">   7.  Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
122      <tr><td class="lineno" valign="top"></td><td class="lblock">   8.  Method Definitions . . . . . . . . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">   8.  Method Definitions . . . . . . . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
123      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.1.  Safe and Idempotent Methods  . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">     8.1.  Safe and Idempotent Methods  . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
124      <tr><td class="lineno" valign="top"></td><td class="lblock">       8.1.1.  Safe Methods . . . . . . . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">       8.1.1.  Safe Methods . . . . . . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
125      <tr><td class="lineno" valign="top"></td><td class="lblock">       8.1.2.  Idempotent Methods . . . . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">       8.1.2.  Idempotent Methods . . . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.2.  OPTIONS  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">12</span></td><td> </td><td class="rblock">     8.2.  OPTIONS  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.3.  GET  . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock">     8.3.  GET  . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.4.  HEAD . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock">     8.4.  HEAD . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
129      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.5.  POST . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock">     8.5.  POST . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">15</span></td><td class="lineno" valign="top"></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.6.  PUT  . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock">     8.6.  PUT  . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">16</span></td><td class="lineno" valign="top"></td></tr>
131      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.7.  DELETE . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">16</span></td><td> </td><td class="rblock">     8.7.  DELETE . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
132      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.8.  TRACE  . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">16</span></td><td> </td><td class="rblock">     8.8.  TRACE  . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
133      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.9.  CONNECT  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">17</span></td><td> </td><td class="rblock">     8.9.  CONNECT  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">18</span></td><td class="lineno" valign="top"></td></tr>
134      <tr><td class="lineno" valign="top"></td><td class="lblock">   9.  Status Code Definitions  . . . . . . . . . . . . . . . . . . . <span class="delete">17</span></td><td> </td><td class="rblock">   9.  Status Code Definitions  . . . . . . . . . . . . . . . . . . . <span class="insert">18</span></td><td class="lineno" valign="top"></td></tr>
135      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.1.  Informational 1xx  . . . . . . . . . . . . . . . . . . . . <span class="delete">17</span></td><td> </td><td class="rblock">     9.1.  Informational 1xx  . . . . . . . . . . . . . . . . . . . . <span class="insert">18</span></td><td class="lineno" valign="top"></td></tr>
136      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.1.1.  100 Continue . . . . . . . . . . . . . . . . . . . . . <span class="delete">17</span></td><td> </td><td class="rblock">       9.1.1.  100 Continue . . . . . . . . . . . . . . . . . . . . . <span class="insert">18</span></td><td class="lineno" valign="top"></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.1.2.  101 Switching Protocols  . . . . . . . . . . . . . . . <span class="delete">18</span></td><td> </td><td class="rblock">       9.1.2.  101 Switching Protocols  . . . . . . . . . . . . . . . <span class="insert">19</span></td><td class="lineno" valign="top"></td></tr>
138      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.2.  Successful 2xx . . . . . . . . . . . . . . . . . . . . . . <span class="delete">18</span></td><td> </td><td class="rblock">     9.2.  Successful 2xx . . . . . . . . . . . . . . . . . . . . . . <span class="insert">19</span></td><td class="lineno" valign="top"></td></tr>
139      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.1.  200 OK . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">18</span></td><td> </td><td class="rblock">       9.2.1.  200 OK . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">19</span></td><td class="lineno" valign="top"></td></tr>
140      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.2.  201 Created  . . . . . . . . . . . . . . . . . . . . . <span class="delete">18</span></td><td> </td><td class="rblock">       9.2.2.  201 Created  . . . . . . . . . . . . . . . . . . . . . <span class="insert">19</span></td><td class="lineno" valign="top"></td></tr>
141      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.3.  202 Accepted . . . . . . . . . . . . . . . . . . . . . <span class="delete">19</span></td><td> </td><td class="rblock">       9.2.3.  202 Accepted . . . . . . . . . . . . . . . . . . . . . <span class="insert">20</span></td><td class="lineno" valign="top"></td></tr>
142      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.4.  203 Non-Authoritative Information  . . . . . . . . . . <span class="delete">19</span></td><td> </td><td class="rblock">       9.2.4.  203 Non-Authoritative Information  . . . . . . . . . . <span class="insert">20</span></td><td class="lineno" valign="top"></td></tr>
143      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.5.  204 No Content . . . . . . . . . . . . . . . . . . . . <span class="delete">19</span></td><td> </td><td class="rblock">       9.2.5.  204 No Content . . . . . . . . . . . . . . . . . . . . <span class="insert">20</span></td><td class="lineno" valign="top"></td></tr>
144      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.6.  205 Reset Content  . . . . . . . . . . . . . . . . . . <span class="delete">20</span></td><td> </td><td class="rblock">       9.2.6.  205 Reset Content  . . . . . . . . . . . . . . . . . . <span class="insert">21</span></td><td class="lineno" valign="top"></td></tr>
145      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.2.7.  206 Partial Content  . . . . . . . . . . . . . . . . . <span class="delete">20</span></td><td> </td><td class="rblock">       9.2.7.  206 Partial Content  . . . . . . . . . . . . . . . . . <span class="insert">21</span></td><td class="lineno" valign="top"></td></tr>
146      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.3.  Redirection 3xx  . . . . . . . . . . . . . . . . . . . . . <span class="delete">20</span></td><td> </td><td class="rblock">     9.3.  Redirection 3xx  . . . . . . . . . . . . . . . . . . . . . <span class="insert">21</span></td><td class="lineno" valign="top"></td></tr>
147      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.1.  300 Multiple Choices . . . . . . . . . . . . . . . . . <span class="delete">20</span></td><td> </td><td class="rblock">       9.3.1.  300 Multiple Choices . . . . . . . . . . . . . . . . . <span class="insert">21</span></td><td class="lineno" valign="top"></td></tr>
148      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.2.  301 Moved Permanently  . . . . . . . . . . . . . . . . <span class="delete">21</span></td><td> </td><td class="rblock">       9.3.2.  301 Moved Permanently  . . . . . . . . . . . . . . . . <span class="insert">22</span></td><td class="lineno" valign="top"></td></tr>
149      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.3.  302 Found  . . . . . . . . . . . . . . . . . . . . . . <span class="delete">21</span></td><td> </td><td class="rblock">       9.3.3.  302 Found  . . . . . . . . . . . . . . . . . . . . . . <span class="insert">22</span></td><td class="lineno" valign="top"></td></tr>
150      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.4.  303 See Other  . . . . . . . . . . . . . . . . . . . . <span class="delete">22</span></td><td> </td><td class="rblock">       9.3.4.  303 See Other  . . . . . . . . . . . . . . . . . . . . <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
151      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.5.  304 Not Modified . . . . . . . . . . . . . . . . . . . <span class="delete">22</span></td><td> </td><td class="rblock">       9.3.5.  304 Not Modified . . . . . . . . . . . . . . . . . . . <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
152      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.6.  305 Use Proxy  . . . . . . . . . . . . . . . . . . . . <span class="delete">22</span></td><td> </td><td class="rblock">       9.3.6.  305 Use Proxy  . . . . . . . . . . . . . . . . . . . . <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
153      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.7.  306 (Unused) . . . . . . . . . . . . . . . . . . . . . <span class="delete">23</span></td><td> </td><td class="rblock">       9.3.7.  306 (Unused) . . . . . . . . . . . . . . . . . . . . . <span class="insert">24</span></td><td class="lineno" valign="top"></td></tr>
154      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.3.8.  307 Temporary Redirect . . . . . . . . . . . . . . . . <span class="delete">23</span></td><td> </td><td class="rblock">       9.3.8.  307 Temporary Redirect . . . . . . . . . . . . . . . . <span class="insert">24</span></td><td class="lineno" valign="top"></td></tr>
155      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.4.  Client Error 4xx . . . . . . . . . . . . . . . . . . . . . <span class="delete">23</span></td><td> </td><td class="rblock">     9.4.  Client Error 4xx . . . . . . . . . . . . . . . . . . . . . <span class="insert">24</span></td><td class="lineno" valign="top"></td></tr>
156      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.1.  400 Bad Request  . . . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.1.  400 Bad Request  . . . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
157      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.2.  401 Unauthorized . . . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.2.  401 Unauthorized . . . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
158      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.3.  402 Payment Required . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.3.  402 Payment Required . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
159      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.4.  403 Forbidden  . . . . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.4.  403 Forbidden  . . . . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
160      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.5.  404 Not Found  . . . . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.5.  404 Not Found  . . . . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
161      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.6.  405 Method Not Allowed . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.6.  405 Method Not Allowed . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
162      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.7.  406 Not Acceptable . . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">       9.4.7.  406 Not Acceptable . . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.8.  407 Proxy Authentication Required  . . . . . . . . . . <span class="delete">25</span></td><td> </td><td class="rblock">       9.4.8.  407 Proxy Authentication Required  . . . . . . . . . . <span class="insert">26</span></td><td class="lineno" valign="top"></td></tr>
164      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.9.  408 Request Timeout  . . . . . . . . . . . . . . . . . <span class="delete">25</span></td><td> </td><td class="rblock">       9.4.9.  408 Request Timeout  . . . . . . . . . . . . . . . . . <span class="insert">26</span></td><td class="lineno" valign="top"></td></tr>
165      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.10. 409 Conflict . . . . . . . . . . . . . . . . . . . . . <span class="delete">25</span></td><td> </td><td class="rblock">       9.4.10. 409 Conflict . . . . . . . . . . . . . . . . . . . . . <span class="insert">26</span></td><td class="lineno" valign="top"></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.11. 410 Gone . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">26</span></td><td> </td><td class="rblock">       9.4.11. 410 Gone . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
167      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.12. 411 Length Required  . . . . . . . . . . . . . . . . . <span class="delete">26</span></td><td> </td><td class="rblock">       9.4.12. 411 Length Required  . . . . . . . . . . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.13. 412 Precondition Failed  . . . . . . . . . . . . . . . <span class="delete">26</span></td><td> </td><td class="rblock">       9.4.13. 412 Precondition Failed  . . . . . . . . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.14. 413 Request Entity Too Large . . . . . . . . . . . . . <span class="delete">26</span></td><td> </td><td class="rblock">       9.4.14. 413 Request Entity Too Large . . . . . . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.15. 414 Request-URI Too Long . . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">       9.4.15. 414 Request-URI Too Long . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
171      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.16. 415 Unsupported Media Type . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">       9.4.16. 415 Unsupported Media Type . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
172      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.17. 416 Requested Range Not Satisfiable  . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">       9.4.17. 416 Requested Range Not Satisfiable  . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
173      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.4.18. 417 Expectation Failed . . . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">       9.4.18. 417 Expectation Failed . . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
174      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.5.  Server Error 5xx . . . . . . . . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">     9.5.  Server Error 5xx . . . . . . . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
175      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.5.1.  500 Internal Server Error  . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">       9.5.1.  500 Internal Server Error  . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
176      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.5.2.  501 Not Implemented  . . . . . . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">       9.5.2.  501 Not Implemented  . . . . . . . . . . . . . . . . . <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.5.3.  502 Bad Gateway  . . . . . . . . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">       9.5.3.  502 Bad Gateway  . . . . . . . . . . . . . . . . . . . <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
178      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.5.4.  503 Service Unavailable  . . . . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">       9.5.4.  503 Service Unavailable  . . . . . . . . . . . . . . . <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
179      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.5.5.  504 Gateway Timeout  . . . . . . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">       9.5.5.  504 Gateway Timeout  . . . . . . . . . . . . . . . . . <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
180      <tr><td class="lineno" valign="top"></td><td class="lblock">       9.5.6.  505 HTTP Version Not Supported . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">       9.5.6.  505 HTTP Version Not Supported . . . . . . . . . . . . <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
181      <tr><td class="lineno" valign="top"></td><td class="lblock">   10. Header Field Definitions . . . . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">   10. Header Field Definitions . . . . . . . . . . . . . . . . . . . <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
182      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.1. Allow  . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">     10.1. Allow  . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
183      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.2. Expect . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">     10.2. Expect . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
184      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.3. From . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">30</span></td><td> </td><td class="rblock">     10.3. From . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">31</span></td><td class="lineno" valign="top"></td></tr>
185      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.4. Location . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">31</span></td><td> </td><td class="rblock">     10.4. Location . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
186      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.5. Max-Forwards . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">32</span></td><td> </td><td class="rblock">     10.5. Max-Forwards . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">33</span></td><td class="lineno" valign="top"></td></tr>
187      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.6. Referer  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">32</span></td><td> </td><td class="rblock">     10.6. Referer  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">33</span></td><td class="lineno" valign="top"></td></tr>
188      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.7. Retry-After  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">33</span></td><td> </td><td class="rblock">     10.7. Retry-After  . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">34</span></td><td class="lineno" valign="top"></td></tr>
189      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.8. Server . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">33</span></td><td> </td><td class="rblock">     10.8. Server . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">34</span></td><td class="lineno" valign="top"></td></tr>
190      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.9. User-Agent . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">     10.9. User-Agent . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
191      <tr><td class="lineno" valign="top"></td><td class="lblock">   11. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">   11. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
192      <tr><td class="lineno" valign="top"></td><td class="lblock">   12. Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">   12. Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
193      <tr><td class="lineno" valign="top"></td><td class="lblock">     12.1. Transfer of Sensitive Information  . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">     12.1. Transfer of Sensitive Information  . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
194      <tr><td class="lineno" valign="top"></td><td class="lblock">     12.2. Encoding Sensitive Information in <span class="delete">URI's</span>  . . . . . . . . . <span class="delete">35</span></td><td> </td><td class="rblock">     12.2. Encoding Sensitive Information in <span class="insert">URIs</span> . . . . . . . . . <span class="insert">. 36</span></td><td class="lineno" valign="top"></td></tr>
195      <tr><td class="lineno" valign="top"></td><td class="lblock">     12.3. Location Headers and Spoofing  . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock">     12.3. Location Headers and Spoofing  . . . . . . . . . . . . . . <span class="insert">37</span></td><td class="lineno" valign="top"></td></tr>
196      <tr><td class="lineno" valign="top"></td><td class="lblock">   13. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock">   13. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">37</span></td><td class="lineno" valign="top"></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="lblock">   14. References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock">   14. References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">37</span></td><td class="lineno" valign="top"></td></tr>
198      <tr><td class="lineno" valign="top"></td><td class="lblock">     14.1. Normative References . . . . . . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock">     14.1. Normative References . . . . . . . . . . . . . . . . . . . <span class="insert">37</span></td><td class="lineno" valign="top"></td></tr>
199      <tr><td class="lineno" valign="top"></td><td class="lblock">     14.2. Informative References . . . . . . . . . . . . . . . . . . <span class="delete">37</span></td><td> </td><td class="rblock">     14.2. Informative References . . . . . . . . . . . . . . . . . . <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
200      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix A.  Compatibility with Previous Versions  . . . . . . . . <span class="delete">37</span></td><td> </td><td class="rblock">   Appendix A.  Compatibility with Previous Versions  . . . . . . . . <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.1.  Changes from RFC 2068  . . . . . . . . . . . . . . . . . . <span class="delete">37</span></td><td> </td><td class="rblock">     A.1.  Changes from RFC 2068  . . . . . . . . . . . . . . . . . . <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.2.  Changes from RFC 2616  . . . . . . . . . . . . . . . . . . <span class="delete">38</span></td><td> </td><td class="rblock">     A.2.  Changes from RFC 2616  . . . . . . . . . . . . . . . . . . <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
203      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix B.  Change Log (to be removed by RFC Editor before</td><td> </td><td class="right">   Appendix B.  Change Log (to be removed by RFC Editor before</td><td class="lineno" valign="top"></td></tr>
204      <tr><td><a name="diff0006" /></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="lblock">                publication)  . . . . . . . . . . . . . . . . . . . . <span class="delete">39</span></td><td> </td><td class="rblock">                publication)  . . . . . . . . . . . . . . . . . . . . <span class="insert">40</span></td><td class="lineno" valign="top"></td></tr>
206      <tr><td class="lineno" valign="top"></td><td class="lblock">     B.1.  Since RFC2616  . . . . . . . . . . . . . . . . . . . . . . <span class="delete">39</span></td><td> </td><td class="rblock">     B.1.  Since RFC2616  . . . . . . . . . . . . . . . . . . . . . . <span class="insert">40</span></td><td class="lineno" valign="top"></td></tr>
207      <tr><td class="lineno" valign="top"></td><td class="lblock">     B.2.  Since draft-ietf-httpbis-p2-semantics-00 . . . . . . . . . <span class="delete">39</span></td><td> </td><td class="rblock">     B.2.  Since draft-ietf-httpbis-p2-semantics-00 . . . . . . . . . <span class="insert">40</span></td><td class="lineno" valign="top"></td></tr>
208      <tr><td class="lineno" valign="top"></td><td class="lblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">39</span></td><td> </td><td class="rblock"><span class="insert">     B.3.  Since draft-ietf-httpbis-p2-semantics-01 . . . . . . . . . 41</span></td><td class="lineno" valign="top"></td></tr>
209      <tr><td class="lineno" valign="top"></td><td class="lblock">   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">43</span></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">41</span></td><td class="lineno" valign="top"></td></tr>
210      <tr><td class="lineno" valign="top"></td><td class="lblock">   Intellectual Property and Copyright Statements . . . . . . . . . . <span class="delete">47</span></td><td> </td><td class="rblock">   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">45</span></td><td class="lineno" valign="top"></td></tr>
211      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   Intellectual Property and Copyright Statements . . . . . . . . . . <span class="insert">48</span></td><td class="lineno" valign="top"></td></tr>
212      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
213      <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>
214      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
215      <tr><td class="lineno" valign="top"></td><td class="left">   This document defines HTTP/1.1 request and response semantics.  Each</td><td> </td><td class="right">   This document defines HTTP/1.1 request and response semantics.  Each</td><td class="lineno" valign="top"></td></tr>
216      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP message, as defined in [Part1], is in the form of either a</td><td> </td><td class="right">   HTTP message, as defined in [Part1], is in the form of either a</td><td class="lineno" valign="top"></td></tr>
217      <tr><td class="lineno" valign="top"></td><td class="left">   request or a response.  An HTTP server listens on a connection for</td><td> </td><td class="right">   request or a response.  An HTTP server listens on a connection for</td><td class="lineno" valign="top"></td></tr>
218      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP requests and responds to each request, in the order received on</td><td> </td><td class="right">   HTTP requests and responds to each request, in the order received on</td><td class="lineno" valign="top"></td></tr>
219      <tr><td class="lineno" valign="top"></td><td class="left">   that connection, with one or more HTTP response messages.  This</td><td> </td><td class="right">   that connection, with one or more HTTP response messages.  This</td><td class="lineno" valign="top"></td></tr>
220      <tr><td class="lineno" valign="top"></td><td class="left">   document defines the commonly agreed upon semantics of the HTTP</td><td> </td><td class="right">   document defines the commonly agreed upon semantics of the HTTP</td><td class="lineno" valign="top"></td></tr>
221      <tr><td class="lineno" valign="top"></td><td class="left">   uniform interface, the intentions defined by each request method, and</td><td> </td><td class="right">   uniform interface, the intentions defined by each request method, and</td><td class="lineno" valign="top"></td></tr>
222      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
223      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 6, line 42</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 6, line 42</em></th><td></td></tr>
224      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
225      <tr><td class="lineno" valign="top"></td><td class="left">   An implementation is not compliant if it fails to satisfy one or more</td><td> </td><td class="right">   An implementation is not compliant if it fails to satisfy one or more</td><td class="lineno" valign="top"></td></tr>
226      <tr><td class="lineno" valign="top"></td><td class="left">   of the MUST or REQUIRED level requirements for the protocols it</td><td> </td><td class="right">   of the MUST or REQUIRED level requirements for the protocols it</td><td class="lineno" valign="top"></td></tr>
227      <tr><td class="lineno" valign="top"></td><td class="left">   implements.  An implementation that satisfies all the MUST or</td><td> </td><td class="right">   implements.  An implementation that satisfies all the MUST or</td><td class="lineno" valign="top"></td></tr>
228      <tr><td class="lineno" valign="top"></td><td class="left">   REQUIRED level and all the SHOULD level requirements for its</td><td> </td><td class="right">   REQUIRED level and all the SHOULD level requirements for its</td><td class="lineno" valign="top"></td></tr>
229      <tr><td class="lineno" valign="top"></td><td class="left">   protocols is said to be "unconditionally compliant"; one that</td><td> </td><td class="right">   protocols is said to be "unconditionally compliant"; one that</td><td class="lineno" valign="top"></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="left">   satisfies all the MUST level requirements but not all the SHOULD</td><td> </td><td class="right">   satisfies all the MUST level requirements but not all the SHOULD</td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno" valign="top"></td><td class="left">   level requirements for its protocols is said to be "conditionally</td><td> </td><td class="right">   level requirements for its protocols is said to be "conditionally</td><td class="lineno" valign="top"></td></tr>
232      <tr><td class="lineno" valign="top"></td><td class="left">   compliant."</td><td> </td><td class="right">   compliant."</td><td class="lineno" valign="top"></td></tr>
233      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
234      <tr><td><a name="diff0007" /></td></tr>
235      <tr><td class="lineno" valign="top"></td><td class="lblock">2.  <span class="delete">Product Tokens</span></td><td> </td><td class="rblock">2.  <span class="insert">Notational Conventions and Generic Grammar</span></td><td class="lineno" valign="top"></td></tr>
236      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
237      <tr><td><a name="diff0008" /></td></tr>
238      <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">   <span class="insert">This specification uses</span> the <span class="insert">ABNF syntax defined</span> in <span class="insert">Section 2.1</span> of</td><td class="lineno" valign="top"></td></tr>
239      <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">   <span class="insert">[Part1] and</span> the <span class="insert">core rules defined in Section 2.2 of [Part1]:</span></td><td class="lineno" valign="top"></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   product tokens also allow sub-products which form a significant part</span></td><td> </td><td class="rblock"><span class="insert">   [[abnf.dep: ABNF syntax and basic rules will be adopted from RFC</span></td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of</span> the <span class="delete">application to be listed, separated by white space.  By</span></td><td> </td><td class="rblock"><span class="insert">   5234, see &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/36&gt;.]]</span></td><td class="lineno" valign="top"></td></tr>
242      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   convention, the products are listed</span> in <span class="delete">order</span> of <span class="delete">their significance</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
243      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   for identifying</span> the <span class="delete">application.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
244      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
245      <tr><td><a name="diff0009" /></td></tr>
246      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">product</span>         = <span class="delete">token ["/" product-version]</span></td><td> </td><td class="rblock">     <span class="insert">DIGIT</span>         = <span class="insert">&lt;DIGIT, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     product-version</span> = token</td><td> </td><td class="rblock"><span class="insert">     comment       = &lt;comment, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
248      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     quoted-string</span> = <span class="insert">&lt;quoted-string, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
249      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">     token         <span class="insert">= &lt;token, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
250      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
251      <tr><td><a name="diff0010" /></td></tr>
252      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Example</span>s:</td><td> </td><td class="rblock">   <span class="insert">The ABNF rules below are defined in other part</span>s:</td><td class="lineno" valign="top"></td></tr>
253      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
254      <tr><td><a name="diff0011" /></td></tr>
255      <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">     <span class="insert">absoluteURI   = &lt;absoluteURI, defined in [Part1], Section 3.2.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
256      <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"><span class="insert">     fragment      = &lt;fragment, defined in [Part1], Section 3.2.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
257      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Host          = &lt;Host, defined in [Part1], Section 8.4&gt;</span></td><td class="lineno" valign="top"></td></tr>
258      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     HTTP-date     = &lt;HTTP-date, defined in [Part1], Section 3.3.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
259      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     product       = &lt;product, defined in [Part1], Section 3.5&gt;</span></td><td class="lineno" valign="top"></td></tr>
260      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     relativeURI   = &lt;relativeURI, defined in [Part1], Section 3.2.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     TE            = &lt;TE, defined in [Part1], Section 8.8&gt;</span></td><td class="lineno" valign="top"></td></tr>
262      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
263      <tr><td><a name="diff0012" /></td></tr>
264      <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">     <span class="insert">Accept        = &lt;Accept, defined in [Part3], Section 6.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
265      <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"><span class="insert">     Accept-Charset =</span></td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   any token character MAY appear in a product-version, this token</span></td><td> </td><td class="rblock"><span class="insert">                &lt;Accept-Charset, defined in [Part3], Section 6.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
267      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   SHOULD only be used for a version identifier (i.e., successive</span></td><td> </td><td class="rblock"><span class="insert">     Accept-Encoding =</span></td><td class="lineno" valign="top"></td></tr>
268      <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"><span class="insert">                &lt;Accept-Encoding, defined in [Part3], Section 6.3&gt;</span></td><td class="lineno" valign="top"></td></tr>
269      <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"><span class="insert">     Accept-Language =</span></td><td class="lineno" valign="top"></td></tr>
270      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                &lt;Accept-Language, defined in [Part3], Section 6.4&gt;</span></td><td class="lineno" valign="top"></td></tr>
271      <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>
272      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     ETag          = &lt;ETag, defined in [Part4], Section 7.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
273      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     If-Match      = &lt;If-Match, defined in [Part4], Section 7.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
274      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     If-Modified-Since =</span></td><td class="lineno" valign="top"></td></tr>
275      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                &lt;If-Modified-Since, defined in [Part4], Section 7.3&gt;</span></td><td class="lineno" valign="top"></td></tr>
276      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     If-None-Match = &lt;If-None-Match, defined in [Part4], Section 7.4&gt;</span></td><td class="lineno" valign="top"></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     If-Unmodified-Since =</span></td><td class="lineno" valign="top"></td></tr>
278      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                &lt;If-Unmodified-Since, defined in [Part4], Section 7.5&gt;</span></td><td class="lineno" valign="top"></td></tr>
279      <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>
280      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Accept-Ranges = &lt;Accept-Ranges, defined in [Part5], Section 6.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     If-Range      = &lt;If-Range, defined in [Part5], Section 6.3&gt;</span></td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Range         = &lt;Range, defined in [Part5], Section 6.4&gt;</span></td><td class="lineno" valign="top"></td></tr>
283      <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>
284      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Age           = &lt;Age, defined in [Part6], Section 16.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Vary          = &lt;Vary, defined in [Part6], Section 16.5&gt;</span></td><td class="lineno" valign="top"></td></tr>
286      <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>
287      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Authorization = &lt;Authorization, defined in [Part7], Section 4.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Proxy-Authenticate =</span></td><td class="lineno" valign="top"></td></tr>
289      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                &lt;Proxy-Authenticate, defined in [Part7], Section 4.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
290      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Proxy-Authorization =</span></td><td class="lineno" valign="top"></td></tr>
291      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                &lt;Proxy-Authorization, defined in [Part7], Section 4.3&gt;</span></td><td class="lineno" valign="top"></td></tr>
292      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     WWW-Authenticate =</span></td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                &lt;WWW-Authenticate, defined in [Part7], Section 4.4&gt;</span></td><td class="lineno" valign="top"></td></tr>
294      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
295      <tr><td class="lineno" valign="top"></td><td class="left">3.  Method</td><td> </td><td class="right">3.  Method</td><td class="lineno" valign="top"></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
297      <tr><td class="lineno" valign="top"></td><td class="left">   The Method token indicates the method to be performed on the resource</td><td> </td><td class="right">   The Method token indicates the method to be performed on the resource</td><td class="lineno" valign="top"></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="left">   identified by the Request-URI.  The method is case-sensitive.</td><td> </td><td class="right">   identified by the Request-URI.  The method is case-sensitive.</td><td class="lineno" valign="top"></td></tr>
299      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
300      <tr><td class="lineno" valign="top"></td><td class="left">     Method         = "OPTIONS"                ; Section 8.2</td><td> </td><td class="right">     Method         = "OPTIONS"                ; Section 8.2</td><td class="lineno" valign="top"></td></tr>
301      <tr><td class="lineno" valign="top"></td><td class="left">                    | "GET"                    ; Section 8.3</td><td> </td><td class="right">                    | "GET"                    ; Section 8.3</td><td class="lineno" valign="top"></td></tr>
302      <tr><td class="lineno" valign="top"></td><td class="left">                    | "HEAD"                   ; Section 8.4</td><td> </td><td class="right">                    | "HEAD"                   ; Section 8.4</td><td class="lineno" valign="top"></td></tr>
303      <tr><td class="lineno" valign="top"></td><td class="left">                    | "POST"                   ; Section 8.5</td><td> </td><td class="right">                    | "POST"                   ; Section 8.5</td><td class="lineno" valign="top"></td></tr>
304      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
305      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 8, line 9</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 9, line 5</em></th><td></td></tr>
306      <tr><td class="lineno" valign="top"></td><td class="left">   those specified in Section 8.</td><td> </td><td class="right">   those specified in Section 8.</td><td class="lineno" valign="top"></td></tr>
307      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
308      <tr><td class="lineno" valign="top"></td><td class="left">4.  Request Header Fields</td><td> </td><td class="right">4.  Request Header Fields</td><td class="lineno" valign="top"></td></tr>
309      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
310      <tr><td class="lineno" valign="top"></td><td class="left">   The request-header fields allow the client to pass additional</td><td> </td><td class="right">   The request-header fields allow the client to pass additional</td><td class="lineno" valign="top"></td></tr>
311      <tr><td class="lineno" valign="top"></td><td class="left">   information about the request, and about the client itself, to the</td><td> </td><td class="right">   information about the request, and about the client itself, to the</td><td class="lineno" valign="top"></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="left">   server.  These fields act as request modifiers, with semantics</td><td> </td><td class="right">   server.  These fields act as request modifiers, with semantics</td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno" valign="top"></td><td class="left">   equivalent to the parameters on a programming language method</td><td> </td><td class="right">   equivalent to the parameters on a programming language method</td><td class="lineno" valign="top"></td></tr>
314      <tr><td class="lineno" valign="top"></td><td class="left">   invocation.</td><td> </td><td class="right">   invocation.</td><td class="lineno" valign="top"></td></tr>
315      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
316      <tr><td><a name="diff0013" /></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="lblock">     request-header = Accept                   ; [Part3], Section <span class="delete">5.1</span></td><td> </td><td class="rblock">     request-header = Accept                   ; [Part3], Section <span class="insert">6.1</span></td><td class="lineno" valign="top"></td></tr>
318      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | Accept-Charset           ; [Part3], Section <span class="delete">5.2</span></td><td> </td><td class="rblock">                    | Accept-Charset           ; [Part3], Section <span class="insert">6.2</span></td><td class="lineno" valign="top"></td></tr>
319      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | Accept-Encoding          ; [Part3], Section <span class="delete">5.3</span></td><td> </td><td class="rblock">                    | Accept-Encoding          ; [Part3], Section <span class="insert">6.3</span></td><td class="lineno" valign="top"></td></tr>
320      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | Accept-Language          ; [Part3], Section <span class="delete">5.4</span></td><td> </td><td class="rblock">                    | Accept-Language          ; [Part3], Section <span class="insert">6.4</span></td><td class="lineno" valign="top"></td></tr>
321      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | Authorization            ; [Part7], Section <span class="delete">3.1</span></td><td> </td><td class="rblock">                    | Authorization            ; [Part7], Section <span class="insert">4.1</span></td><td class="lineno" valign="top"></td></tr>
322      <tr><td class="lineno" valign="top"></td><td class="left">                    | Expect                   ; Section 10.2</td><td> </td><td class="right">                    | Expect                   ; Section 10.2</td><td class="lineno" valign="top"></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="left">                    | From                     ; Section 10.3</td><td> </td><td class="right">                    | From                     ; Section 10.3</td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="left">                    | Host                     ; [Part1], Section 8.4</td><td> </td><td class="right">                    | Host                     ; [Part1], Section 8.4</td><td class="lineno" valign="top"></td></tr>
325      <tr><td><a name="diff0014" /></td></tr>
326      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | If-Match                 ; [Part4], Section <span class="delete">6.2</span></td><td> </td><td class="rblock">                    | If-Match                 ; [Part4], Section <span class="insert">7.2</span></td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | If-Modified-Since        ; [Part4], Section <span class="delete">6.3</span></td><td> </td><td class="rblock">                    | If-Modified-Since        ; [Part4], Section <span class="insert">7.3</span></td><td class="lineno" valign="top"></td></tr>
328      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | If-None-Match            ; [Part4], Section <span class="delete">6.4</span></td><td> </td><td class="rblock">                    | If-None-Match            ; [Part4], Section <span class="insert">7.4</span></td><td class="lineno" valign="top"></td></tr>
329      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | If-Range                 ; [Part5], Section <span class="delete">5.3</span></td><td> </td><td class="rblock">                    | If-Range                 ; [Part5], Section <span class="insert">6.3</span></td><td class="lineno" valign="top"></td></tr>
330      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | If-Unmodified-Since      ; [Part4], Section <span class="delete">6.5</span></td><td> </td><td class="rblock">                    | If-Unmodified-Since      ; [Part4], Section <span class="insert">7.5</span></td><td class="lineno" valign="top"></td></tr>
331      <tr><td class="lineno" valign="top"></td><td class="left">                    | Max-Forwards             ; Section 10.5</td><td> </td><td class="right">                    | Max-Forwards             ; Section 10.5</td><td class="lineno" valign="top"></td></tr>
332      <tr><td><a name="diff0015" /></td></tr>
333      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | Proxy-Authorization      ; [Part7], Section <span class="delete">3.3</span></td><td> </td><td class="rblock">                    | Proxy-Authorization      ; [Part7], Section <span class="insert">4.3</span></td><td class="lineno" valign="top"></td></tr>
334      <tr><td class="lineno" valign="top"></td><td class="lblock">                    | Range                    ; [Part5], Section <span class="delete">5.4</span></td><td> </td><td class="rblock">                    | Range                    ; [Part5], Section <span class="insert">6.4</span></td><td class="lineno" valign="top"></td></tr>
335      <tr><td class="lineno" valign="top"></td><td class="left">                    | Referer                  ; Section 10.6</td><td> </td><td class="right">                    | Referer                  ; Section 10.6</td><td class="lineno" valign="top"></td></tr>
336      <tr><td class="lineno" valign="top"></td><td class="left">                    | TE                       ; [Part1], Section 8.8</td><td> </td><td class="right">                    | TE                       ; [Part1], Section 8.8</td><td class="lineno" valign="top"></td></tr>
337      <tr><td class="lineno" valign="top"></td><td class="left">                    | User-Agent               ; Section 10.9</td><td> </td><td class="right">                    | User-Agent               ; Section 10.9</td><td class="lineno" valign="top"></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
339      <tr><td class="lineno" valign="top"></td><td class="left">   Request-header field names can be extended reliably only in</td><td> </td><td class="right">   Request-header field names can be extended reliably only in</td><td class="lineno" valign="top"></td></tr>
340      <tr><td class="lineno" valign="top"></td><td class="left">   combination with a change in the protocol version.  However, new or</td><td> </td><td class="right">   combination with a change in the protocol version.  However, new or</td><td class="lineno" valign="top"></td></tr>
341      <tr><td class="lineno" valign="top"></td><td class="left">   experimental header fields MAY be given the semantics of request-</td><td> </td><td class="right">   experimental header fields MAY be given the semantics of request-</td><td class="lineno" valign="top"></td></tr>
342      <tr><td class="lineno" valign="top"></td><td class="left">   header fields if all parties in the communication recognize them to</td><td> </td><td class="right">   header fields if all parties in the communication recognize them to</td><td class="lineno" valign="top"></td></tr>
343      <tr><td class="lineno" valign="top"></td><td class="left">   be request-header fields.  Unrecognized header fields are treated as</td><td> </td><td class="right">   be request-header fields.  Unrecognized header fields are treated as</td><td class="lineno" valign="top"></td></tr>
344      <tr><td class="lineno" valign="top"></td><td class="left">   entity-header fields.</td><td> </td><td class="right">   entity-header fields.</td><td class="lineno" valign="top"></td></tr>
345      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
346      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 10, line 23</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 11, line 23</em></th><td></td></tr>
347      <tr><td class="lineno" valign="top"></td><td class="left">   with the response, since that entity is likely to include human-</td><td> </td><td class="right">   with the response, since that entity is likely to include human-</td><td class="lineno" valign="top"></td></tr>
348      <tr><td class="lineno" valign="top"></td><td class="left">   readable information which will explain the unusual status.</td><td> </td><td class="right">   readable information which will explain the unusual status.</td><td class="lineno" valign="top"></td></tr>
349      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
350      <tr><td class="lineno" valign="top"></td><td class="left">6.  Response Header Fields</td><td> </td><td class="right">6.  Response Header Fields</td><td class="lineno" valign="top"></td></tr>
351      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
352      <tr><td class="lineno" valign="top"></td><td class="left">   The response-header fields allow the server to pass additional</td><td> </td><td class="right">   The response-header fields allow the server to pass additional</td><td class="lineno" valign="top"></td></tr>
353      <tr><td class="lineno" valign="top"></td><td class="left">   information about the response which cannot be placed in the Status-</td><td> </td><td class="right">   information about the response which cannot be placed in the Status-</td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="left">   Line.  These header fields give information about the server and</td><td> </td><td class="right">   Line.  These header fields give information about the server and</td><td class="lineno" valign="top"></td></tr>
355      <tr><td class="lineno" valign="top"></td><td class="left">   about further access to the resource identified by the Request-URI.</td><td> </td><td class="right">   about further access to the resource identified by the Request-URI.</td><td class="lineno" valign="top"></td></tr>
356      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
357      <tr><td><a name="diff0016" /></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="lblock">     response-header = Accept-Ranges           ; [Part5], Section <span class="delete">5.1</span></td><td> </td><td class="rblock">     response-header = Accept-Ranges           ; [Part5], Section <span class="insert">6.1</span></td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="lblock">                     | Age                     ; [Part6], Section <span class="delete">15.1</span></td><td> </td><td class="rblock">                     | Age                     ; [Part6], Section <span class="insert">16.1</span></td><td class="lineno" valign="top"></td></tr>
360      <tr><td class="lineno" valign="top"></td><td class="lblock">                     | ETag                    ; [Part4], Section <span class="delete">6.1</span></td><td> </td><td class="rblock">                     | ETag                    ; [Part4], Section <span class="insert">7.1</span></td><td class="lineno" valign="top"></td></tr>
361      <tr><td class="lineno" valign="top"></td><td class="left">                     | Location                ; Section 10.4</td><td> </td><td class="right">                     | Location                ; Section 10.4</td><td class="lineno" valign="top"></td></tr>
362      <tr><td><a name="diff0017" /></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="lblock">                     | Proxy-Authenticate      ; [Part7], Section <span class="delete">3</span>.2</td><td> </td><td class="rblock">                     | Proxy-Authenticate      ; [Part7], Section <span class="insert">4</span>.2</td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno" valign="top"></td><td class="left">                     | Retry-After             ; Section 10.7</td><td> </td><td class="right">                     | Retry-After             ; Section 10.7</td><td class="lineno" valign="top"></td></tr>
365      <tr><td class="lineno" valign="top"></td><td class="left">                     | Server                  ; Section 10.8</td><td> </td><td class="right">                     | Server                  ; Section 10.8</td><td class="lineno" valign="top"></td></tr>
366      <tr><td><a name="diff0018" /></td></tr>
367      <tr><td class="lineno" valign="top"></td><td class="lblock">                     | Vary                    ; [Part6], Section <span class="delete">15.5</span></td><td> </td><td class="rblock">                     | Vary                    ; [Part6], Section <span class="insert">16.5</span></td><td class="lineno" valign="top"></td></tr>
368      <tr><td class="lineno" valign="top"></td><td class="lblock">                     | WWW-Authenticate        ; [Part7], Section <span class="delete">3.4</span></td><td> </td><td class="rblock">                     | WWW-Authenticate        ; [Part7], Section <span class="insert">4.4</span></td><td class="lineno" valign="top"></td></tr>
369      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
370      <tr><td class="lineno" valign="top"></td><td class="left">   Response-header field names can be extended reliably only in</td><td> </td><td class="right">   Response-header field names can be extended reliably only in</td><td class="lineno" valign="top"></td></tr>
371      <tr><td class="lineno" valign="top"></td><td class="left">   combination with a change in the protocol version.  However, new or</td><td> </td><td class="right">   combination with a change in the protocol version.  However, new or</td><td class="lineno" valign="top"></td></tr>
372      <tr><td class="lineno" valign="top"></td><td class="left">   experimental header fields MAY be given the semantics of response-</td><td> </td><td class="right">   experimental header fields MAY be given the semantics of response-</td><td class="lineno" valign="top"></td></tr>
373      <tr><td class="lineno" valign="top"></td><td class="left">   header fields if all parties in the communication recognize them to</td><td> </td><td class="right">   header fields if all parties in the communication recognize them to</td><td class="lineno" valign="top"></td></tr>
374      <tr><td class="lineno" valign="top"></td><td class="left">   be response-header fields.  Unrecognized header fields are treated as</td><td> </td><td class="right">   be response-header fields.  Unrecognized header fields are treated as</td><td class="lineno" valign="top"></td></tr>
375      <tr><td class="lineno" valign="top"></td><td class="left">   entity-header fields.</td><td> </td><td class="right">   entity-header fields.</td><td class="lineno" valign="top"></td></tr>
376      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="left">7.  Entity</td><td> </td><td class="right">7.  Entity</td><td class="lineno" valign="top"></td></tr>
378      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
379      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
380      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 11, line 13</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 12, line 13</em></th><td></td></tr>
381      <tr><td class="lineno" valign="top"></td><td class="left">   present, as described in Section 4.3 of [Part1].  The entity-body is</td><td> </td><td class="right">   present, as described in Section 4.3 of [Part1].  The entity-body is</td><td class="lineno" valign="top"></td></tr>
382      <tr><td class="lineno" valign="top"></td><td class="left">   obtained from the message-body by decoding any Transfer-Encoding that</td><td> </td><td class="right">   obtained from the message-body by decoding any Transfer-Encoding that</td><td class="lineno" valign="top"></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="left">   might have been applied to ensure safe and proper transfer of the</td><td> </td><td class="right">   might have been applied to ensure safe and proper transfer of the</td><td class="lineno" valign="top"></td></tr>
384      <tr><td class="lineno" valign="top"></td><td class="left">   message.</td><td> </td><td class="right">   message.</td><td class="lineno" valign="top"></td></tr>
385      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
386      <tr><td class="lineno" valign="top"></td><td class="left">8.  Method Definitions</td><td> </td><td class="right">8.  Method Definitions</td><td class="lineno" valign="top"></td></tr>
387      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
388      <tr><td class="lineno" valign="top"></td><td class="left">   The set of common methods for HTTP/1.1 is defined below.  Although</td><td> </td><td class="right">   The set of common methods for HTTP/1.1 is defined below.  Although</td><td class="lineno" valign="top"></td></tr>
389      <tr><td class="lineno" valign="top"></td><td class="left">   this set can be expanded, additional methods cannot be assumed to</td><td> </td><td class="right">   this set can be expanded, additional methods cannot be assumed to</td><td class="lineno" valign="top"></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="left">   share the same semantics for separately extended clients and servers.</td><td> </td><td class="right">   share the same semantics for separately extended clients and servers.</td><td class="lineno" valign="top"></td></tr>
391      <tr><td><a name="diff0019" /></td></tr>
392      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">The Host request-header field (Section 8.4 of [Part1]) MUST accompany</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"><span class="delete">   all HTTP/1.1 requests.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
394      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
395      <tr><td class="lineno" valign="top"></td><td class="left">8.1.  Safe and Idempotent Methods</td><td> </td><td class="right">8.1.  Safe and Idempotent Methods</td><td class="lineno" valign="top"></td></tr>
396      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
397      <tr><td class="lineno" valign="top"></td><td class="left">8.1.1.  Safe Methods</td><td> </td><td class="right">8.1.1.  Safe Methods</td><td class="lineno" valign="top"></td></tr>
398      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
399      <tr><td class="lineno" valign="top"></td><td class="left">   Implementors should be aware that the software represents the user in</td><td> </td><td class="right">   Implementors should be aware that the software represents the user in</td><td class="lineno" valign="top"></td></tr>
400      <tr><td class="lineno" valign="top"></td><td class="left">   their interactions over the Internet, and should be careful to allow</td><td> </td><td class="right">   their interactions over the Internet, and should be careful to allow</td><td class="lineno" valign="top"></td></tr>
401      <tr><td class="lineno" valign="top"></td><td class="left">   the user to be aware of any actions they might take which may have an</td><td> </td><td class="right">   the user to be aware of any actions they might take which may have an</td><td class="lineno" valign="top"></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="left">   unexpected significance to themselves or others.</td><td> </td><td class="right">   unexpected significance to themselves or others.</td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
404      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
405      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 13, line 37</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 14, line 34</em></th><td></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="left">   If-Match, If-None-Match, or If-Range header field.  A conditional GET</td><td> </td><td class="right">   If-Match, If-None-Match, or If-Range header field.  A conditional GET</td><td class="lineno" valign="top"></td></tr>
407      <tr><td class="lineno" valign="top"></td><td class="left">   method requests that the entity be transferred only under the</td><td> </td><td class="right">   method requests that the entity be transferred only under the</td><td class="lineno" valign="top"></td></tr>
408      <tr><td class="lineno" valign="top"></td><td class="left">   circumstances described by the conditional header field(s).  The</td><td> </td><td class="right">   circumstances described by the conditional header field(s).  The</td><td class="lineno" valign="top"></td></tr>
409      <tr><td class="lineno" valign="top"></td><td class="left">   conditional GET method is intended to reduce unnecessary network</td><td> </td><td class="right">   conditional GET method is intended to reduce unnecessary network</td><td class="lineno" valign="top"></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="left">   usage by allowing cached entities to be refreshed without requiring</td><td> </td><td class="right">   usage by allowing cached entities to be refreshed without requiring</td><td class="lineno" valign="top"></td></tr>
411      <tr><td class="lineno" valign="top"></td><td class="left">   multiple requests or transferring data already held by the client.</td><td> </td><td class="right">   multiple requests or transferring data already held by the client.</td><td class="lineno" valign="top"></td></tr>
412      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
413      <tr><td class="lineno" valign="top"></td><td class="left">   The semantics of the GET method change to a "partial GET" if the</td><td> </td><td class="right">   The semantics of the GET method change to a "partial GET" if the</td><td class="lineno" valign="top"></td></tr>
414      <tr><td class="lineno" valign="top"></td><td class="left">   request message includes a Range header field.  A partial GET</td><td> </td><td class="right">   request message includes a Range header field.  A partial GET</td><td class="lineno" valign="top"></td></tr>
415      <tr><td class="lineno" valign="top"></td><td class="left">   requests that only part of the entity be transferred, as described in</td><td> </td><td class="right">   requests that only part of the entity be transferred, as described in</td><td class="lineno" valign="top"></td></tr>
416      <tr><td><a name="diff0020" /></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="lblock">   Section <span class="delete">5</span>.4 of [Part5].  The partial GET method is intended to reduce</td><td> </td><td class="rblock">   Section <span class="insert">6</span>.4 of [Part5].  The partial GET method is intended to reduce</td><td class="lineno" valign="top"></td></tr>
418      <tr><td class="lineno" valign="top"></td><td class="left">   unnecessary network usage by allowing partially-retrieved entities to</td><td> </td><td class="right">   unnecessary network usage by allowing partially-retrieved entities to</td><td class="lineno" valign="top"></td></tr>
419      <tr><td class="lineno" valign="top"></td><td class="left">   be completed without transferring data already held by the client.</td><td> </td><td class="right">   be completed without transferring data already held by the client.</td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
421      <tr><td class="lineno" valign="top"></td><td class="left">   The response to a GET request is cacheable if and only if it meets</td><td> </td><td class="right">   The response to a GET request is cacheable if and only if it meets</td><td class="lineno" valign="top"></td></tr>
422      <tr><td class="lineno" valign="top"></td><td class="left">   the requirements for HTTP caching described in [Part6].</td><td> </td><td class="right">   the requirements for HTTP caching described in [Part6].</td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
424      <tr><td class="lineno" valign="top"></td><td class="left">   See Section 12.2 for security considerations when used for forms.</td><td> </td><td class="right">   See Section 12.2 for security considerations when used for forms.</td><td class="lineno" valign="top"></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno" valign="top"></td><td class="left">8.4.  HEAD</td><td> </td><td class="right">8.4.  HEAD</td><td class="lineno" valign="top"></td></tr>
427      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
428      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
429      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 15, line 14</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 16, line 14</em></th><td></td></tr>
430      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
431      <tr><td class="lineno" valign="top"></td><td class="left">8.6.  PUT</td><td> </td><td class="right">8.6.  PUT</td><td class="lineno" valign="top"></td></tr>
432      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
433      <tr><td class="lineno" valign="top"></td><td class="left">   The PUT method requests that the enclosed entity be stored under the</td><td> </td><td class="right">   The PUT method requests that the enclosed entity be stored under the</td><td class="lineno" valign="top"></td></tr>
434      <tr><td class="lineno" valign="top"></td><td class="left">   supplied Request-URI.  If the Request-URI refers to an already</td><td> </td><td class="right">   supplied Request-URI.  If the Request-URI refers to an already</td><td class="lineno" valign="top"></td></tr>
435      <tr><td class="lineno" valign="top"></td><td class="left">   existing resource, the enclosed entity SHOULD be considered as a</td><td> </td><td class="right">   existing resource, the enclosed entity SHOULD be considered as a</td><td class="lineno" valign="top"></td></tr>
436      <tr><td class="lineno" valign="top"></td><td class="left">   modified version of the one residing on the origin server.  If the</td><td> </td><td class="right">   modified version of the one residing on the origin server.  If the</td><td class="lineno" valign="top"></td></tr>
437      <tr><td class="lineno" valign="top"></td><td class="left">   Request-URI does not point to an existing resource, and that URI is</td><td> </td><td class="right">   Request-URI does not point to an existing resource, and that URI is</td><td class="lineno" valign="top"></td></tr>
438      <tr><td class="lineno" valign="top"></td><td class="left">   capable of being defined as a new resource by the requesting user</td><td> </td><td class="right">   capable of being defined as a new resource by the requesting user</td><td class="lineno" valign="top"></td></tr>
439      <tr><td class="lineno" valign="top"></td><td class="left">   agent, the origin server can create the resource with that URI.  If a</td><td> </td><td class="right">   agent, the origin server can create the resource with that URI.  If a</td><td class="lineno" valign="top"></td></tr>
440      <tr><td><a name="diff0021" /></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="lblock">   new resource is <span class="delete">created,</span> the origin server MUST inform the user agent</td><td> </td><td class="rblock">   new resource is <span class="insert">created at the Request-URI,</span> the origin server MUST</td><td class="lineno" valign="top"></td></tr>
442      <tr><td class="lineno" valign="top"></td><td class="lblock">   via the 201 (Created) response.  If an existing resource is modified,</td><td> </td><td class="rblock">   inform the user agent via the 201 (Created) response.  If an existing</td><td class="lineno" valign="top"></td></tr>
443      <tr><td class="lineno" valign="top"></td><td class="lblock">   either the 200 (OK) or 204 (No Content) response codes SHOULD be sent</td><td> </td><td class="rblock">   resource is modified, either the 200 (OK) or 204 (No Content)</td><td class="lineno" valign="top"></td></tr>
444      <tr><td class="lineno" valign="top"></td><td class="lblock">   to indicate successful completion of the request.  If the resource</td><td> </td><td class="rblock">   response codes SHOULD be sent to indicate successful completion of</td><td class="lineno" valign="top"></td></tr>
445      <tr><td class="lineno" valign="top"></td><td class="lblock">   could not be created or modified with the Request-URI, an appropriate</td><td> </td><td class="rblock">   the request.  If the resource could not be created or modified with</td><td class="lineno" valign="top"></td></tr>
446      <tr><td class="lineno" valign="top"></td><td class="lblock">   error response SHOULD be given that reflects the nature of the</td><td> </td><td class="rblock">   the Request-URI, an appropriate error response SHOULD be given that</td><td class="lineno" valign="top"></td></tr>
447      <tr><td class="lineno" valign="top"></td><td class="lblock">   problem.  The recipient of the entity MUST NOT ignore any Content-*</td><td> </td><td class="rblock">   reflects the nature of the problem.  The recipient of the entity MUST</td><td class="lineno" valign="top"></td></tr>
448      <tr><td class="lineno" valign="top"></td><td class="lblock">   (e.g.  Content-Range) headers that it does not understand or</td><td> </td><td class="rblock">   NOT ignore any Content-* (e.g.  Content-Range) headers that it does</td><td class="lineno" valign="top"></td></tr>
449      <tr><td class="lineno" valign="top"></td><td class="lblock">   implement and MUST return a 501 (Not Implemented) response in such</td><td> </td><td class="rblock">   not understand or implement and MUST return a 501 (Not Implemented)</td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="lblock">   cases.</td><td> </td><td class="rblock">   response in such cases.</td><td class="lineno" valign="top"></td></tr>
451      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
452      <tr><td class="lineno" valign="top"></td><td class="left">   If the request passes through a cache and the Request-URI identifies</td><td> </td><td class="right">   If the request passes through a cache and the Request-URI identifies</td><td class="lineno" valign="top"></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="left">   one or more currently cached entities, those entries SHOULD be</td><td> </td><td class="right">   one or more currently cached entities, those entries SHOULD be</td><td class="lineno" valign="top"></td></tr>
454      <tr><td class="lineno" valign="top"></td><td class="left">   treated as stale.  Responses to this method are not cacheable.</td><td> </td><td class="right">   treated as stale.  Responses to this method are not cacheable.</td><td class="lineno" valign="top"></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="left">   The fundamental difference between the POST and PUT requests is</td><td> </td><td class="right">   The fundamental difference between the POST and PUT requests is</td><td class="lineno" valign="top"></td></tr>
457      <tr><td class="lineno" valign="top"></td><td class="left">   reflected in the different meaning of the Request-URI.  The URI in a</td><td> </td><td class="right">   reflected in the different meaning of the Request-URI.  The URI in a</td><td class="lineno" valign="top"></td></tr>
458      <tr><td class="lineno" valign="top"></td><td class="left">   POST request identifies the resource that will handle the enclosed</td><td> </td><td class="right">   POST request identifies the resource that will handle the enclosed</td><td class="lineno" valign="top"></td></tr>
459      <tr><td class="lineno" valign="top"></td><td class="left">   entity.  That resource might be a data-accepting process, a gateway</td><td> </td><td class="right">   entity.  That resource might be a data-accepting process, a gateway</td><td class="lineno" valign="top"></td></tr>
460      <tr><td class="lineno" valign="top"></td><td class="left">   to some other protocol, or a separate entity that accepts</td><td> </td><td class="right">   to some other protocol, or a separate entity that accepts</td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
462      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 18, line 8</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 19, line 8</em></th><td></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="left">   been received and has not yet been rejected by the server.  The</td><td> </td><td class="right">   been received and has not yet been rejected by the server.  The</td><td class="lineno" valign="top"></td></tr>
464      <tr><td class="lineno" valign="top"></td><td class="left">   client SHOULD continue by sending the remainder of the request or, if</td><td> </td><td class="right">   client SHOULD continue by sending the remainder of the request or, if</td><td class="lineno" valign="top"></td></tr>
465      <tr><td class="lineno" valign="top"></td><td class="left">   the request has already been completed, ignore this response.  The</td><td> </td><td class="right">   the request has already been completed, ignore this response.  The</td><td class="lineno" valign="top"></td></tr>
466      <tr><td class="lineno" valign="top"></td><td class="left">   server MUST send a final response after the request has been</td><td> </td><td class="right">   server MUST send a final response after the request has been</td><td class="lineno" valign="top"></td></tr>
467      <tr><td class="lineno" valign="top"></td><td class="left">   completed.  See Section 7.2.3 of [Part1] for detailed discussion of</td><td> </td><td class="right">   completed.  See Section 7.2.3 of [Part1] for detailed discussion of</td><td class="lineno" valign="top"></td></tr>
468      <tr><td class="lineno" valign="top"></td><td class="left">   the use and handling of this status code.</td><td> </td><td class="right">   the use and handling of this status code.</td><td class="lineno" valign="top"></td></tr>
469      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
470      <tr><td class="lineno" valign="top"></td><td class="left">9.1.2.  101 Switching Protocols</td><td> </td><td class="right">9.1.2.  101 Switching Protocols</td><td class="lineno" valign="top"></td></tr>
471      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
472      <tr><td class="lineno" valign="top"></td><td class="left">   The server understands and is willing to comply with the client's</td><td> </td><td class="right">   The server understands and is willing to comply with the client's</td><td class="lineno" valign="top"></td></tr>
473      <tr><td><a name="diff0022" /></td></tr>
474      <tr><td class="lineno" valign="top"></td><td class="lblock">   request, via the Upgrade message header field (Section <span class="delete">5</span>.4 of</td><td> </td><td class="rblock">   request, via the Upgrade message header field (Section <span class="insert">6</span>.4 of</td><td class="lineno" valign="top"></td></tr>
475      <tr><td class="lineno" valign="top"></td><td class="left">   [Part5]), for a change in the application protocol being used on this</td><td> </td><td class="right">   [Part5]), for a change in the application protocol being used on this</td><td class="lineno" valign="top"></td></tr>
476      <tr><td class="lineno" valign="top"></td><td class="left">   connection.  The server will switch protocols to those defined by the</td><td> </td><td class="right">   connection.  The server will switch protocols to those defined by the</td><td class="lineno" valign="top"></td></tr>
477      <tr><td class="lineno" valign="top"></td><td class="left">   response's Upgrade header field immediately after the empty line</td><td> </td><td class="right">   response's Upgrade header field immediately after the empty line</td><td class="lineno" valign="top"></td></tr>
478      <tr><td class="lineno" valign="top"></td><td class="left">   which terminates the 101 response.</td><td> </td><td class="right">   which terminates the 101 response.</td><td class="lineno" valign="top"></td></tr>
479      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
480      <tr><td class="lineno" valign="top"></td><td class="left">   The protocol SHOULD be switched only when it is advantageous to do</td><td> </td><td class="right">   The protocol SHOULD be switched only when it is advantageous to do</td><td class="lineno" valign="top"></td></tr>
481      <tr><td class="lineno" valign="top"></td><td class="left">   so.  For example, switching to a newer version of HTTP is</td><td> </td><td class="right">   so.  For example, switching to a newer version of HTTP is</td><td class="lineno" valign="top"></td></tr>
482      <tr><td class="lineno" valign="top"></td><td class="left">   advantageous over older versions, and switching to a real-time,</td><td> </td><td class="right">   advantageous over older versions, and switching to a real-time,</td><td class="lineno" valign="top"></td></tr>
483      <tr><td class="lineno" valign="top"></td><td class="left">   synchronous protocol might be advantageous when delivering resources</td><td> </td><td class="right">   synchronous protocol might be advantageous when delivering resources</td><td class="lineno" valign="top"></td></tr>
484      <tr><td class="lineno" valign="top"></td><td class="left">   that use such features.</td><td> </td><td class="right">   that use such features.</td><td class="lineno" valign="top"></td></tr>
485      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
486      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 19, line 8</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 20, line 8</em></th><td></td></tr>
487      <tr><td class="lineno" valign="top"></td><td class="left">   SHOULD include an entity containing a list of resource</td><td> </td><td class="right">   SHOULD include an entity containing a list of resource</td><td class="lineno" valign="top"></td></tr>
488      <tr><td class="lineno" valign="top"></td><td class="left">   characteristics and location(s) from which the user or user agent can</td><td> </td><td class="right">   characteristics and location(s) from which the user or user agent can</td><td class="lineno" valign="top"></td></tr>
489      <tr><td class="lineno" valign="top"></td><td class="left">   choose the one most appropriate.  The entity format is specified by</td><td> </td><td class="right">   choose the one most appropriate.  The entity format is specified by</td><td class="lineno" valign="top"></td></tr>
490      <tr><td class="lineno" valign="top"></td><td class="left">   the media type given in the Content-Type header field.  The origin</td><td> </td><td class="right">   the media type given in the Content-Type header field.  The origin</td><td class="lineno" valign="top"></td></tr>
491      <tr><td class="lineno" valign="top"></td><td class="left">   server MUST create the resource before returning the 201 status code.</td><td> </td><td class="right">   server MUST create the resource before returning the 201 status code.</td><td class="lineno" valign="top"></td></tr>
492      <tr><td class="lineno" valign="top"></td><td class="left">   If the action cannot be carried out immediately, the server SHOULD</td><td> </td><td class="right">   If the action cannot be carried out immediately, the server SHOULD</td><td class="lineno" valign="top"></td></tr>
493      <tr><td class="lineno" valign="top"></td><td class="left">   respond with 202 (Accepted) response instead.</td><td> </td><td class="right">   respond with 202 (Accepted) response instead.</td><td class="lineno" valign="top"></td></tr>
494      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
495      <tr><td class="lineno" valign="top"></td><td class="left">   A 201 response MAY contain an ETag response header field indicating</td><td> </td><td class="right">   A 201 response MAY contain an ETag response header field indicating</td><td class="lineno" valign="top"></td></tr>
496      <tr><td class="lineno" valign="top"></td><td class="left">   the current value of the entity tag for the requested variant just</td><td> </td><td class="right">   the current value of the entity tag for the requested variant just</td><td class="lineno" valign="top"></td></tr>
497      <tr><td><a name="diff0023" /></td></tr>
498      <tr><td class="lineno" valign="top"></td><td class="lblock">   created, see Section <span class="delete">6</span>.1 of [Part4].</td><td> </td><td class="rblock">   created, see Section <span class="insert">7</span>.1 of [Part4].</td><td class="lineno" valign="top"></td></tr>
499      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
500      <tr><td class="lineno" valign="top"></td><td class="left">9.2.3.  202 Accepted</td><td> </td><td class="right">9.2.3.  202 Accepted</td><td class="lineno" valign="top"></td></tr>
501      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
502      <tr><td class="lineno" valign="top"></td><td class="left">   The request has been accepted for processing, but the processing has</td><td> </td><td class="right">   The request has been accepted for processing, but the processing has</td><td class="lineno" valign="top"></td></tr>
503      <tr><td class="lineno" valign="top"></td><td class="left">   not been completed.  The request might or might not eventually be</td><td> </td><td class="right">   not been completed.  The request might or might not eventually be</td><td class="lineno" valign="top"></td></tr>
504      <tr><td class="lineno" valign="top"></td><td class="left">   acted upon, as it might be disallowed when processing actually takes</td><td> </td><td class="right">   acted upon, as it might be disallowed when processing actually takes</td><td class="lineno" valign="top"></td></tr>
505      <tr><td class="lineno" valign="top"></td><td class="left">   place.  There is no facility for re-sending a status code from an</td><td> </td><td class="right">   place.  There is no facility for re-sending a status code from an</td><td class="lineno" valign="top"></td></tr>
506      <tr><td class="lineno" valign="top"></td><td class="left">   asynchronous operation such as this.</td><td> </td><td class="right">   asynchronous operation such as this.</td><td class="lineno" valign="top"></td></tr>
507      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
508      <tr><td class="lineno" valign="top"></td><td class="left">   The 202 response is intentionally non-committal.  Its purpose is to</td><td> </td><td class="right">   The 202 response is intentionally non-committal.  Its purpose is to</td><td class="lineno" valign="top"></td></tr>
509      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
510      <tr bgcolor="gray" ><td></td><th><a name="part-l12" /><small>skipping to change at</small><em> page 20, line 41</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 21, line 41</em></th><td></td></tr>
511      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
512      <tr><td class="lineno" valign="top"></td><td class="left">      Note: previous versions of this specification recommended a</td><td> </td><td class="right">      Note: previous versions of this specification recommended a</td><td class="lineno" valign="top"></td></tr>
513      <tr><td class="lineno" valign="top"></td><td class="left">      maximum of five redirections.  Content developers should be aware</td><td> </td><td class="right">      maximum of five redirections.  Content developers should be aware</td><td class="lineno" valign="top"></td></tr>
514      <tr><td class="lineno" valign="top"></td><td class="left">      that there might be clients that implement such a fixed</td><td> </td><td class="right">      that there might be clients that implement such a fixed</td><td class="lineno" valign="top"></td></tr>
515      <tr><td class="lineno" valign="top"></td><td class="left">      limitation.</td><td> </td><td class="right">      limitation.</td><td class="lineno" valign="top"></td></tr>
516      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
517      <tr><td class="lineno" valign="top"></td><td class="left">9.3.1.  300 Multiple Choices</td><td> </td><td class="right">9.3.1.  300 Multiple Choices</td><td class="lineno" valign="top"></td></tr>
518      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
519      <tr><td class="lineno" valign="top"></td><td class="left">   The requested resource corresponds to any one of a set of</td><td> </td><td class="right">   The requested resource corresponds to any one of a set of</td><td class="lineno" valign="top"></td></tr>
520      <tr><td class="lineno" valign="top"></td><td class="left">   representations, each with its own specific location, and agent-</td><td> </td><td class="right">   representations, each with its own specific location, and agent-</td><td class="lineno" valign="top"></td></tr>
521      <tr><td><a name="diff0024" /></td></tr>
522      <tr><td class="lineno" valign="top"></td><td class="lblock">   driven negotiation information (Section <span class="delete">4</span> of [Part3]) is being</td><td> </td><td class="rblock">   driven negotiation information (Section <span class="insert">5</span> of [Part3]) is being</td><td class="lineno" valign="top"></td></tr>
523      <tr><td class="lineno" valign="top"></td><td class="left">   provided so that the user (or user agent) can select a preferred</td><td> </td><td class="right">   provided so that the user (or user agent) can select a preferred</td><td class="lineno" valign="top"></td></tr>
524      <tr><td class="lineno" valign="top"></td><td class="left">   representation and redirect its request to that location.</td><td> </td><td class="right">   representation and redirect its request to that location.</td><td class="lineno" valign="top"></td></tr>
525      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
526      <tr><td class="lineno" valign="top"></td><td class="left">   Unless it was a HEAD request, the response SHOULD include an entity</td><td> </td><td class="right">   Unless it was a HEAD request, the response SHOULD include an entity</td><td class="lineno" valign="top"></td></tr>
527      <tr><td class="lineno" valign="top"></td><td class="left">   containing a list of resource characteristics and location(s) from</td><td> </td><td class="right">   containing a list of resource characteristics and location(s) from</td><td class="lineno" valign="top"></td></tr>
528      <tr><td class="lineno" valign="top"></td><td class="left">   which the user or user agent can choose the one most appropriate.</td><td> </td><td class="right">   which the user or user agent can choose the one most appropriate.</td><td class="lineno" valign="top"></td></tr>
529      <tr><td class="lineno" valign="top"></td><td class="left">   The entity format is specified by the media type given in the</td><td> </td><td class="right">   The entity format is specified by the media type given in the</td><td class="lineno" valign="top"></td></tr>
530      <tr><td class="lineno" valign="top"></td><td class="left">   Content-Type header field.  Depending upon the format and the</td><td> </td><td class="right">   Content-Type header field.  Depending upon the format and the</td><td class="lineno" valign="top"></td></tr>
531      <tr><td class="lineno" valign="top"></td><td class="left">   capabilities of the user agent, selection of the most appropriate</td><td> </td><td class="right">   capabilities of the user agent, selection of the most appropriate</td><td class="lineno" valign="top"></td></tr>
532      <tr><td class="lineno" valign="top"></td><td class="left">   choice MAY be performed automatically.  However, this specification</td><td> </td><td class="right">   choice MAY be performed automatically.  However, this specification</td><td class="lineno" valign="top"></td></tr>
533      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
534      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 27, line 25</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 28, line 25</em></th><td></td></tr>
535      <tr><td class="lineno" valign="top"></td><td class="left">   buffers for reading or manipulating the Request-URI.</td><td> </td><td class="right">   buffers for reading or manipulating the Request-URI.</td><td class="lineno" valign="top"></td></tr>
536      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
537      <tr><td class="lineno" valign="top"></td><td class="left">9.4.16.  415 Unsupported Media Type</td><td> </td><td class="right">9.4.16.  415 Unsupported Media Type</td><td class="lineno" valign="top"></td></tr>
538      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
539      <tr><td class="lineno" valign="top"></td><td class="left">   The server is refusing to service the request because the entity of</td><td> </td><td class="right">   The server is refusing to service the request because the entity of</td><td class="lineno" valign="top"></td></tr>
540      <tr><td class="lineno" valign="top"></td><td class="left">   the request is in a format not supported by the requested resource</td><td> </td><td class="right">   the request is in a format not supported by the requested resource</td><td class="lineno" valign="top"></td></tr>
541      <tr><td class="lineno" valign="top"></td><td class="left">   for the requested method.</td><td> </td><td class="right">   for the requested method.</td><td class="lineno" valign="top"></td></tr>
542      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
543      <tr><td class="lineno" valign="top"></td><td class="left">9.4.17.  416 Requested Range Not Satisfiable</td><td> </td><td class="right">9.4.17.  416 Requested Range Not Satisfiable</td><td class="lineno" valign="top"></td></tr>
544      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
545      <tr><td><a name="diff0025" /></td></tr>
546      <tr><td class="lineno" valign="top"></td><td class="lblock">   The request included a Range request-header field (Section <span class="delete">5</span>.4 of</td><td> </td><td class="rblock">   The request included a Range request-header field (Section <span class="insert">6</span>.4 of</td><td class="lineno" valign="top"></td></tr>
547      <tr><td class="lineno" valign="top"></td><td class="left">   [Part5]) and none of the range-specifier values in this field overlap</td><td> </td><td class="right">   [Part5]) and none of the range-specifier values in this field overlap</td><td class="lineno" valign="top"></td></tr>
548      <tr><td class="lineno" valign="top"></td><td class="left">   the current extent of the selected resource.</td><td> </td><td class="right">   the current extent of the selected resource.</td><td class="lineno" valign="top"></td></tr>
549      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
550      <tr><td class="lineno" valign="top"></td><td class="left">9.4.18.  417 Expectation Failed</td><td> </td><td class="right">9.4.18.  417 Expectation Failed</td><td class="lineno" valign="top"></td></tr>
551      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
552      <tr><td class="lineno" valign="top"></td><td class="left">   The expectation given in an Expect request-header field (see</td><td> </td><td class="right">   The expectation given in an Expect request-header field (see</td><td class="lineno" valign="top"></td></tr>
553      <tr><td class="lineno" valign="top"></td><td class="left">   Section 10.2) could not be met by this server, or, if the server is a</td><td> </td><td class="right">   Section 10.2) could not be met by this server, or, if the server is a</td><td class="lineno" valign="top"></td></tr>
554      <tr><td class="lineno" valign="top"></td><td class="left">   proxy, the server has unambiguous evidence that the request could not</td><td> </td><td class="right">   proxy, the server has unambiguous evidence that the request could not</td><td class="lineno" valign="top"></td></tr>
555      <tr><td class="lineno" valign="top"></td><td class="left">   be met by the next-hop server.</td><td> </td><td class="right">   be met by the next-hop server.</td><td class="lineno" valign="top"></td></tr>
556      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
557      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
558      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 28, line 43</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 29, line 43</em></th><td></td></tr>
559      <tr><td class="lineno" valign="top"></td><td class="left">   The server, while acting as a gateway or proxy, did not receive a</td><td> </td><td class="right">   The server, while acting as a gateway or proxy, did not receive a</td><td class="lineno" valign="top"></td></tr>
560      <tr><td class="lineno" valign="top"></td><td class="left">   timely response from the upstream server specified by the URI (e.g.</td><td> </td><td class="right">   timely response from the upstream server specified by the URI (e.g.</td><td class="lineno" valign="top"></td></tr>
561      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP, FTP, LDAP) or some other auxiliary server (e.g.  DNS) it needed</td><td> </td><td class="right">   HTTP, FTP, LDAP) or some other auxiliary server (e.g.  DNS) it needed</td><td class="lineno" valign="top"></td></tr>
562      <tr><td class="lineno" valign="top"></td><td class="left">   to access in attempting to complete the request.</td><td> </td><td class="right">   to access in attempting to complete the request.</td><td class="lineno" valign="top"></td></tr>
563      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
564      <tr><td class="lineno" valign="top"></td><td class="left">      Note: Note to implementors: some deployed proxies are known to</td><td> </td><td class="right">      Note: Note to implementors: some deployed proxies are known to</td><td class="lineno" valign="top"></td></tr>
565      <tr><td class="lineno" valign="top"></td><td class="left">      return 400 or 500 when DNS lookups time out.</td><td> </td><td class="right">      return 400 or 500 when DNS lookups time out.</td><td class="lineno" valign="top"></td></tr>
566      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
567      <tr><td class="lineno" valign="top"></td><td class="left">9.5.6.  505 HTTP Version Not Supported</td><td> </td><td class="right">9.5.6.  505 HTTP Version Not Supported</td><td class="lineno" valign="top"></td></tr>
568      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
569      <tr><td><a name="diff0026" /></td></tr>
570      <tr><td class="lineno" valign="top"></td><td class="lblock">   The server does not support, or refuses to support, the <span class="delete">HTTP </span>protocol</td><td> </td><td class="rblock">   The server does not support, or refuses to support, the protocol</td><td class="lineno" valign="top"></td></tr>
571      <tr><td class="lineno" valign="top"></td><td class="left">   version that was used in the request message.  The server is</td><td> </td><td class="right">   version that was used in the request message.  The server is</td><td class="lineno" valign="top"></td></tr>
572      <tr><td class="lineno" valign="top"></td><td class="left">   indicating that it is unable or unwilling to complete the request</td><td> </td><td class="right">   indicating that it is unable or unwilling to complete the request</td><td class="lineno" valign="top"></td></tr>
573      <tr><td class="lineno" valign="top"></td><td class="left">   using the same major version as the client, as described in Section</td><td> </td><td class="right">   using the same major version as the client, as described in Section</td><td class="lineno" valign="top"></td></tr>
574      <tr><td class="lineno" valign="top"></td><td class="left">   3.1 of [Part1], other than with this error message.  The response</td><td> </td><td class="right">   3.1 of [Part1], other than with this error message.  The response</td><td class="lineno" valign="top"></td></tr>
575      <tr><td class="lineno" valign="top"></td><td class="left">   SHOULD contain an entity describing why that version is not supported</td><td> </td><td class="right">   SHOULD contain an entity describing why that version is not supported</td><td class="lineno" valign="top"></td></tr>
576      <tr><td class="lineno" valign="top"></td><td class="left">   and what other protocols are supported by that server.</td><td> </td><td class="right">   and what other protocols are supported by that server.</td><td class="lineno" valign="top"></td></tr>
577      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
578      <tr><td class="lineno" valign="top"></td><td class="left">10.  Header Field Definitions</td><td> </td><td class="right">10.  Header Field Definitions</td><td class="lineno" valign="top"></td></tr>
579      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
580      <tr><td class="lineno" valign="top"></td><td class="left">   This section defines the syntax and semantics of HTTP/1.1 header</td><td> </td><td class="right">   This section defines the syntax and semantics of HTTP/1.1 header</td><td class="lineno" valign="top"></td></tr>
581      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
582      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 30, line 43</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 31, line 43</em></th><td></td></tr>
583      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
584      <tr><td class="lineno" valign="top"></td><td class="left">10.3.  From</td><td> </td><td class="right">10.3.  From</td><td class="lineno" valign="top"></td></tr>
585      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
586      <tr><td class="lineno" valign="top"></td><td class="left">   The From request-header field, if given, SHOULD contain an Internet</td><td> </td><td class="right">   The From request-header field, if given, SHOULD contain an Internet</td><td class="lineno" valign="top"></td></tr>
587      <tr><td class="lineno" valign="top"></td><td class="left">   e-mail address for the human user who controls the requesting user</td><td> </td><td class="right">   e-mail address for the human user who controls the requesting user</td><td class="lineno" valign="top"></td></tr>
588      <tr><td class="lineno" valign="top"></td><td class="left">   agent.  The address SHOULD be machine-usable, as defined by "mailbox"</td><td> </td><td class="right">   agent.  The address SHOULD be machine-usable, as defined by "mailbox"</td><td class="lineno" valign="top"></td></tr>
589      <tr><td class="lineno" valign="top"></td><td class="left">   in Section 3.4 of [RFC2822]:</td><td> </td><td class="right">   in Section 3.4 of [RFC2822]:</td><td class="lineno" valign="top"></td></tr>
590      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
591      <tr><td class="lineno" valign="top"></td><td class="left">     From   = "From" ":" mailbox</td><td> </td><td class="right">     From   = "From" ":" mailbox</td><td class="lineno" valign="top"></td></tr>
592      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
593      <tr><td><a name="diff0027" /></td></tr>
594      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">     <span class="insert">mailbox = &lt;mailbox, defined in [RFC2822], Section 3.4&gt;</span></td><td class="lineno" valign="top"></td></tr>
595      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
596      <tr><td class="lineno" valign="top"></td><td class="left">   An example is:</td><td> </td><td class="right">   An example is:</td><td class="lineno" valign="top"></td></tr>
597      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
598      <tr><td class="lineno" valign="top"></td><td class="left">       From: webmaster@example.org</td><td> </td><td class="right">       From: webmaster@example.org</td><td class="lineno" valign="top"></td></tr>
599      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
600      <tr><td class="lineno" valign="top"></td><td class="left">   This header field MAY be used for logging purposes and as a means for</td><td> </td><td class="right">   This header field MAY be used for logging purposes and as a means for</td><td class="lineno" valign="top"></td></tr>
601      <tr><td class="lineno" valign="top"></td><td class="left">   identifying the source of invalid or unwanted requests.  It SHOULD</td><td> </td><td class="right">   identifying the source of invalid or unwanted requests.  It SHOULD</td><td class="lineno" valign="top"></td></tr>
602      <tr><td class="lineno" valign="top"></td><td class="left">   NOT be used as an insecure form of access protection.  The</td><td> </td><td class="right">   NOT be used as an insecure form of access protection.  The</td><td class="lineno" valign="top"></td></tr>
603      <tr><td class="lineno" valign="top"></td><td class="left">   interpretation of this field is that the request is being performed</td><td> </td><td class="right">   interpretation of this field is that the request is being performed</td><td class="lineno" valign="top"></td></tr>
604      <tr><td class="lineno" valign="top"></td><td class="left">   on behalf of the person given, who accepts responsibility for the</td><td> </td><td class="right">   on behalf of the person given, who accepts responsibility for the</td><td class="lineno" valign="top"></td></tr>
605      <tr><td class="lineno" valign="top"></td><td class="left">   method performed.  In particular, robot agents SHOULD include this</td><td> </td><td class="right">   method performed.  In particular, robot agents SHOULD include this</td><td class="lineno" valign="top"></td></tr>
606      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
607      <tr bgcolor="gray" ><td></td><th><a name="part-l16" /><small>skipping to change at</small><em> page 31, line 35</em></th><th> </th><th><a name="part-r16" /><small>skipping to change at</small><em> page 32, line 37</em></th><td></td></tr>
608      <tr><td class="lineno" valign="top"></td><td class="left">   by the request.  For 3xx responses, the location SHOULD indicate the</td><td> </td><td class="right">   by the request.  For 3xx responses, the location SHOULD indicate the</td><td class="lineno" valign="top"></td></tr>
609      <tr><td class="lineno" valign="top"></td><td class="left">   server's preferred URI for automatic redirection to the resource.</td><td> </td><td class="right">   server's preferred URI for automatic redirection to the resource.</td><td class="lineno" valign="top"></td></tr>
610      <tr><td class="lineno" valign="top"></td><td class="left">   The field value consists of a single absolute URI.</td><td> </td><td class="right">   The field value consists of a single absolute URI.</td><td class="lineno" valign="top"></td></tr>
611      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
612      <tr><td class="lineno" valign="top"></td><td class="left">     Location       = "Location" ":" absoluteURI [ "#" fragment ]</td><td> </td><td class="right">     Location       = "Location" ":" absoluteURI [ "#" fragment ]</td><td class="lineno" valign="top"></td></tr>
613      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
614      <tr><td class="lineno" valign="top"></td><td class="left">   An example is:</td><td> </td><td class="right">   An example is:</td><td class="lineno" valign="top"></td></tr>
615      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
616      <tr><td class="lineno" valign="top"></td><td class="left">       Location: http://www.example.org/pub/WWW/People.html</td><td> </td><td class="right">       Location: http://www.example.org/pub/WWW/People.html</td><td class="lineno" valign="top"></td></tr>
617      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
618      <tr><td><a name="diff0028" /></td></tr>
619      <tr><td class="lineno" valign="top"></td><td class="lblock">      Note: The Content-Location header field (Section <span class="delete">5</span>.7 of [Part3])</td><td> </td><td class="rblock">      Note: The Content-Location header field (Section <span class="insert">6</span>.7 of [Part3])</td><td class="lineno" valign="top"></td></tr>
620      <tr><td class="lineno" valign="top"></td><td class="left">      differs from Location in that the Content-Location identifies the</td><td> </td><td class="right">      differs from Location in that the Content-Location identifies the</td><td class="lineno" valign="top"></td></tr>
621      <tr><td class="lineno" valign="top"></td><td class="left">      original location of the entity enclosed in the request.  It is</td><td> </td><td class="right">      original location of the entity enclosed in the request.  It is</td><td class="lineno" valign="top"></td></tr>
622      <tr><td class="lineno" valign="top"></td><td class="left">      therefore possible for a response to contain header fields for</td><td> </td><td class="right">      therefore possible for a response to contain header fields for</td><td class="lineno" valign="top"></td></tr>
623      <tr><td class="lineno" valign="top"></td><td class="left">      both Location and Content-Location.</td><td> </td><td class="right">      both Location and Content-Location.</td><td class="lineno" valign="top"></td></tr>
624      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
625      <tr><td class="lineno" valign="top"></td><td class="left">   There are circumstances in which a fragment identifier in a Location</td><td> </td><td class="right">   There are circumstances in which a fragment identifier in a Location</td><td class="lineno" valign="top"></td></tr>
626      <tr><td class="lineno" valign="top"></td><td class="left">   URL would not be appropriate:</td><td> </td><td class="right">   URL would not be appropriate:</td><td class="lineno" valign="top"></td></tr>
627      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
628      <tr><td class="lineno" valign="top"></td><td class="left">   o  With a 201 Created response, because in this usage the Location</td><td> </td><td class="right">   o  With a 201 Created response, because in this usage the Location</td><td class="lineno" valign="top"></td></tr>
629      <tr><td class="lineno" valign="top"></td><td class="left">      header specifies the URL for the entire created resource.</td><td> </td><td class="right">      header specifies the URL for the entire created resource.</td><td class="lineno" valign="top"></td></tr>
630      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
631      <tr bgcolor="gray" ><td></td><th><a name="part-l17" /><small>skipping to change at</small><em> page 33, line 19</em></th><th> </th><th><a name="part-r17" /><small>skipping to change at</small><em> page 34, line 19</em></th><td></td></tr>
632      <tr><td class="lineno" valign="top"></td><td class="left">   The Retry-After response-header field can be used with a 503 (Service</td><td> </td><td class="right">   The Retry-After response-header field can be used with a 503 (Service</td><td class="lineno" valign="top"></td></tr>
633      <tr><td class="lineno" valign="top"></td><td class="left">   Unavailable) response to indicate how long the service is expected to</td><td> </td><td class="right">   Unavailable) response to indicate how long the service is expected to</td><td class="lineno" valign="top"></td></tr>
634      <tr><td class="lineno" valign="top"></td><td class="left">   be unavailable to the requesting client.  This field MAY also be used</td><td> </td><td class="right">   be unavailable to the requesting client.  This field MAY also be used</td><td class="lineno" valign="top"></td></tr>
635      <tr><td class="lineno" valign="top"></td><td class="left">   with any 3xx (Redirection) response to indicate the minimum time the</td><td> </td><td class="right">   with any 3xx (Redirection) response to indicate the minimum time the</td><td class="lineno" valign="top"></td></tr>
636      <tr><td class="lineno" valign="top"></td><td class="left">   user-agent is asked wait before issuing the redirected request.  The</td><td> </td><td class="right">   user-agent is asked wait before issuing the redirected request.  The</td><td class="lineno" valign="top"></td></tr>
637      <tr><td class="lineno" valign="top"></td><td class="left">   value of this field can be either an HTTP-date or an integer number</td><td> </td><td class="right">   value of this field can be either an HTTP-date or an integer number</td><td class="lineno" valign="top"></td></tr>
638      <tr><td class="lineno" valign="top"></td><td class="left">   of seconds (in decimal) after the time of the response.</td><td> </td><td class="right">   of seconds (in decimal) after the time of the response.</td><td class="lineno" valign="top"></td></tr>
639      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
640      <tr><td class="lineno" valign="top"></td><td class="left">     Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )</td><td> </td><td class="right">     Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )</td><td class="lineno" valign="top"></td></tr>
641      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
642      <tr><td><a name="diff0029" /></td></tr>
643      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">Time spans are non-negative decimal integers, representing time in</span></td><td class="lineno" valign="top"></td></tr>
644      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   seconds.</span></td><td class="lineno" valign="top"></td></tr>
645      <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>
646      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     delta-seconds  = 1*DIGIT</span></td><td class="lineno" valign="top"></td></tr>
647      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
648      <tr><td class="lineno" valign="top"></td><td class="left">   Two examples of its use are</td><td> </td><td class="right">   Two examples of its use are</td><td class="lineno" valign="top"></td></tr>
649      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
650      <tr><td class="lineno" valign="top"></td><td class="left">       Retry-After: Fri, 31 Dec 1999 23:59:59 GMT</td><td> </td><td class="right">       Retry-After: Fri, 31 Dec 1999 23:59:59 GMT</td><td class="lineno" valign="top"></td></tr>
651      <tr><td class="lineno" valign="top"></td><td class="left">       Retry-After: 120</td><td> </td><td class="right">       Retry-After: 120</td><td class="lineno" valign="top"></td></tr>
652      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
653      <tr><td class="lineno" valign="top"></td><td class="left">   In the latter example, the delay is 2 minutes.</td><td> </td><td class="right">   In the latter example, the delay is 2 minutes.</td><td class="lineno" valign="top"></td></tr>
654      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
655      <tr><td class="lineno" valign="top"></td><td class="left">10.8.  Server</td><td> </td><td class="right">10.8.  Server</td><td class="lineno" valign="top"></td></tr>
656      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
657      <tr><td class="lineno" valign="top"></td><td class="left">   The Server response-header field contains information about the</td><td> </td><td class="right">   The Server response-header field contains information about the</td><td class="lineno" valign="top"></td></tr>
658      <tr><td class="lineno" valign="top"></td><td class="left">   software used by the origin server to handle the request.  The field</td><td> </td><td class="right">   software used by the origin server to handle the request.  The field</td><td class="lineno" valign="top"></td></tr>
659      <tr><td><a name="diff0030" /></td></tr>
660      <tr><td class="lineno" valign="top"></td><td class="lblock">   can contain multiple product tokens (Section <span class="delete">2)</span> and comments</td><td> </td><td class="rblock">   can contain multiple product tokens (Section <span class="insert">3.5 of [Part1])</span> and</td><td class="lineno" valign="top"></td></tr>
661      <tr><td class="lineno" valign="top"></td><td class="lblock">   identifying the server and any significant subproducts.  The product</td><td> </td><td class="rblock">   comments identifying the server and any significant subproducts.  The</td><td class="lineno" valign="top"></td></tr>
662      <tr><td class="lineno" valign="top"></td><td class="lblock">   tokens are listed in order of their significance for identifying the</td><td> </td><td class="rblock">   product tokens are listed in order of their significance for</td><td class="lineno" valign="top"></td></tr>
663      <tr><td class="lineno" valign="top"></td><td class="lblock">   application.</td><td> </td><td class="rblock">   identifying the application.</td><td class="lineno" valign="top"></td></tr>
664      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
665      <tr><td class="lineno" valign="top"></td><td class="left">     Server         = "Server" ":" 1*( product | comment )</td><td> </td><td class="right">     Server         = "Server" ":" 1*( product | comment )</td><td class="lineno" valign="top"></td></tr>
666      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
667      <tr><td class="lineno" valign="top"></td><td class="left">   Example:</td><td> </td><td class="right">   Example:</td><td class="lineno" valign="top"></td></tr>
668      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
669      <tr><td class="lineno" valign="top"></td><td class="left">       Server: CERN/3.0 libwww/2.17</td><td> </td><td class="right">       Server: CERN/3.0 libwww/2.17</td><td class="lineno" valign="top"></td></tr>
670      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
671      <tr><td class="lineno" valign="top"></td><td class="left">   If the response is being forwarded through a proxy, the proxy</td><td> </td><td class="right">   If the response is being forwarded through a proxy, the proxy</td><td class="lineno" valign="top"></td></tr>
672      <tr><td class="lineno" valign="top"></td><td class="left">   application MUST NOT modify the Server response-header.  Instead, it</td><td> </td><td class="right">   application MUST NOT modify the Server response-header.  Instead, it</td><td class="lineno" valign="top"></td></tr>
673      <tr><td class="lineno" valign="top"></td><td class="left">   MUST include a Via field (as described in Section 8.9 of [Part1]).</td><td> </td><td class="right">   MUST include a Via field (as described in Section 8.9 of [Part1]).</td><td class="lineno" valign="top"></td></tr>
674      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
675      <tr bgcolor="gray" ><td></td><th><a name="part-l18" /><small>skipping to change at</small><em> page 34, line 13</em></th><th> </th><th><a name="part-r18" /><small>skipping to change at</small><em> page 35, line 15</em></th><td></td></tr>
676      <tr><td class="lineno" valign="top"></td><td class="left">      option.</td><td> </td><td class="right">      option.</td><td class="lineno" valign="top"></td></tr>
677      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
678      <tr><td class="lineno" valign="top"></td><td class="left">10.9.  User-Agent</td><td> </td><td class="right">10.9.  User-Agent</td><td class="lineno" valign="top"></td></tr>
679      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
680      <tr><td class="lineno" valign="top"></td><td class="left">   The User-Agent request-header field contains information about the</td><td> </td><td class="right">   The User-Agent request-header field contains information about the</td><td class="lineno" valign="top"></td></tr>
681      <tr><td class="lineno" valign="top"></td><td class="left">   user agent originating the request.  This is for statistical</td><td> </td><td class="right">   user agent originating the request.  This is for statistical</td><td class="lineno" valign="top"></td></tr>
682      <tr><td class="lineno" valign="top"></td><td class="left">   purposes, the tracing of protocol violations, and automated</td><td> </td><td class="right">   purposes, the tracing of protocol violations, and automated</td><td class="lineno" valign="top"></td></tr>
683      <tr><td class="lineno" valign="top"></td><td class="left">   recognition of user agents for the sake of tailoring responses to</td><td> </td><td class="right">   recognition of user agents for the sake of tailoring responses to</td><td class="lineno" valign="top"></td></tr>
684      <tr><td class="lineno" valign="top"></td><td class="left">   avoid particular user agent limitations.  User agents SHOULD include</td><td> </td><td class="right">   avoid particular user agent limitations.  User agents SHOULD include</td><td class="lineno" valign="top"></td></tr>
685      <tr><td class="lineno" valign="top"></td><td class="left">   this field with requests.  The field can contain multiple product</td><td> </td><td class="right">   this field with requests.  The field can contain multiple product</td><td class="lineno" valign="top"></td></tr>
686      <tr><td><a name="diff0031" /></td></tr>
687      <tr><td class="lineno" valign="top"></td><td class="lblock">   tokens (Section <span class="delete">2)</span> and comments identifying the agent and any</td><td> </td><td class="rblock">   tokens (Section <span class="insert">3.5 of [Part1])</span> and comments identifying the agent</td><td class="lineno" valign="top"></td></tr>
688      <tr><td class="lineno" valign="top"></td><td class="lblock">   subproducts which form a significant part of the user agent.  By</td><td> </td><td class="rblock">   and any subproducts which form a significant part of the user agent.</td><td class="lineno" valign="top"></td></tr>
689      <tr><td class="lineno" valign="top"></td><td class="lblock">   convention, the product tokens are listed in order of their</td><td> </td><td class="rblock">   By convention, the product tokens are listed in order of their</td><td class="lineno" valign="top"></td></tr>
690      <tr><td class="lineno" valign="top"></td><td class="left">   significance for identifying the application.</td><td> </td><td class="right">   significance for identifying the application.</td><td class="lineno" valign="top"></td></tr>
691      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
692      <tr><td class="lineno" valign="top"></td><td class="left">     User-Agent     = "User-Agent" ":" 1*( product | comment )</td><td> </td><td class="right">     User-Agent     = "User-Agent" ":" 1*( product | comment )</td><td class="lineno" valign="top"></td></tr>
693      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
694      <tr><td class="lineno" valign="top"></td><td class="left">   Example:</td><td> </td><td class="right">   Example:</td><td class="lineno" valign="top"></td></tr>
695      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
696      <tr><td class="lineno" valign="top"></td><td class="left">       User-Agent: CERN-LineMode/2.15 libwww/2.17b3</td><td> </td><td class="right">       User-Agent: CERN-LineMode/2.15 libwww/2.17b3</td><td class="lineno" valign="top"></td></tr>
697      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
698      <tr><td class="lineno" valign="top"></td><td class="left">11.  IANA Considerations</td><td> </td><td class="right">11.  IANA Considerations</td><td class="lineno" valign="top"></td></tr>
699      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
700      <tr><td><a name="diff0032" /></td></tr>
701      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">TBD.</span></td><td> </td><td class="rblock">   <span class="insert">[[anchor1: TBD.]]</span></td><td class="lineno" valign="top"></td></tr>
702      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
703      <tr><td class="lineno" valign="top"></td><td class="left">12.  Security Considerations</td><td> </td><td class="right">12.  Security Considerations</td><td class="lineno" valign="top"></td></tr>
704      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
705      <tr><td class="lineno" valign="top"></td><td class="left">   This section is meant to inform application developers, information</td><td> </td><td class="right">   This section is meant to inform application developers, information</td><td class="lineno" valign="top"></td></tr>
706      <tr><td class="lineno" valign="top"></td><td class="left">   providers, and users of the security limitations in HTTP/1.1 as</td><td> </td><td class="right">   providers, and users of the security limitations in HTTP/1.1 as</td><td class="lineno" valign="top"></td></tr>
707      <tr><td class="lineno" valign="top"></td><td class="left">   described by this document.  The discussion does not include</td><td> </td><td class="right">   described by this document.  The discussion does not include</td><td class="lineno" valign="top"></td></tr>
708      <tr><td class="lineno" valign="top"></td><td class="left">   definitive solutions to the problems revealed, though it does make</td><td> </td><td class="right">   definitive solutions to the problems revealed, though it does make</td><td class="lineno" valign="top"></td></tr>
709      <tr><td class="lineno" valign="top"></td><td class="left">   some suggestions for reducing security risks.</td><td> </td><td class="right">   some suggestions for reducing security risks.</td><td class="lineno" valign="top"></td></tr>
710      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
711      <tr><td class="lineno" valign="top"></td><td class="left">12.1.  Transfer of Sensitive Information</td><td> </td><td class="right">12.1.  Transfer of Sensitive Information</td><td class="lineno" valign="top"></td></tr>
712      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
713      <tr bgcolor="gray" ><td></td><th><a name="part-l19" /><small>skipping to change at</small><em> page 35, line 35</em></th><th> </th><th><a name="part-r19" /><small>skipping to change at</small><em> page 36, line 37</em></th><td></td></tr>
714      <tr<