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37  <table border="0" cellpadding="0" cellspacing="0"> 
38  <tr bgcolor="orange"><th></th><th>&nbsp;draft-ietf-httpbis-p1-messaging-13.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p1-messaging-14.txt&nbsp;</th><th></th></tr> 
39      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
40      <tr><td class="lineno" valign="top"></td><td class="left">HTTPbis Working Group                                   R. Fielding, Ed.</td><td> </td><td class="right">HTTPbis Working Group                                   R. Fielding, Ed.</td><td class="lineno" valign="top"></td></tr>
41      <tr><td class="lineno" valign="top"></td><td class="left">Internet-Draft                                                     Adobe</td><td> </td><td class="right">Internet-Draft                                                     Adobe</td><td class="lineno" valign="top"></td></tr>
42      <tr><td><a name="diff0001" /></td></tr>
43      <tr><td class="lineno" valign="top"></td><td class="lblock">Obsoletes: 2145,2616                                           <span class="delete">J. Gettys</span></td><td> </td><td class="rblock">Obsoletes: 2145,2616 (if approved)                             <span class="insert">J. Gettys</span></td><td class="lineno" valign="top"></td></tr>
44      <tr><td class="lineno" valign="top"></td><td class="lblock">(if approved)                                             <span class="delete">Alcatel-Lucent</span></td><td> </td><td class="rblock">Updates: 2817 (if approved)                               <span class="insert">Alcatel-Lucent</span></td><td class="lineno" valign="top"></td></tr>
45      <tr><td class="lineno" valign="top"></td><td class="lblock">Updates: 2817 (if approved)                                     <span class="delete">J. Mogul</span></td><td> </td><td class="rblock">Intended status: Standards Track                                <span class="insert">J. Mogul</span></td><td class="lineno" valign="top"></td></tr>
46      <tr><td class="lineno" valign="top"></td><td class="lblock">Intended status: Standards Track                                      <span class="delete">HP</span></td><td> </td><td class="rblock">Expires: <span class="insert">October 20,</span> 2011                                             <span class="insert">HP</span></td><td class="lineno" valign="top"></td></tr>
47      <tr><td class="lineno" valign="top"></td><td class="lblock">Expires: <span class="delete">September 15,</span> 2011                                   H. Frystyk</td><td> </td><td class="rblock">                                                              H. Frystyk</td><td class="lineno" valign="top"></td></tr>
48      <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>
49      <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>
50      <tr><td class="lineno" valign="top"></td><td class="left">                                                                   Adobe</td><td> </td><td class="right">                                                                   Adobe</td><td class="lineno" valign="top"></td></tr>
51      <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>
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">                                                          T. Berners-Lee</td><td> </td><td class="right">                                                          T. Berners-Lee</td><td class="lineno" valign="top"></td></tr>
54      <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>
55      <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>
56      <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>
57      <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>
58      <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>
59      <tr><td><a name="diff0002" /></td></tr>
60      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                          <span class="delete">March 14</span>, 2011</td><td> </td><td class="rblock">                                                          <span class="insert">April 18</span>, 2011</td><td class="lineno" valign="top"></td></tr>
61      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
62      <tr><td class="lineno" valign="top"></td><td class="left">        HTTP/1.1, part 1: URIs, Connections, and Message Parsing</td><td> </td><td class="right">        HTTP/1.1, part 1: URIs, Connections, and Message Parsing</td><td class="lineno" valign="top"></td></tr>
63      <tr><td><a name="diff0003" /></td></tr>
64      <tr><td class="lineno" valign="top"></td><td class="lblock">                   draft-ietf-httpbis-p1-messaging-1<span class="delete">3</span></td><td> </td><td class="rblock">                   draft-ietf-httpbis-p1-messaging-1<span class="insert">4</span></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">Abstract</td><td> </td><td class="right">Abstract</td><td class="lineno" valign="top"></td></tr>
67      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
68      <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>
69      <tr><td class="lineno" valign="top"></td><td class="left">   protocol for distributed, collaborative, hypertext information</td><td> </td><td class="right">   protocol for distributed, collaborative, hypertext information</td><td class="lineno" valign="top"></td></tr>
70      <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>
71      <tr><td class="lineno" valign="top"></td><td class="left">   information initiative since 1990.  This document is Part 1 of the</td><td> </td><td class="right">   information initiative since 1990.  This document is Part 1 of the</td><td class="lineno" valign="top"></td></tr>
72      <tr><td class="lineno" valign="top"></td><td class="left">   seven-part specification that defines the protocol referred to as</td><td> </td><td class="right">   seven-part specification that defines the protocol referred to as</td><td class="lineno" valign="top"></td></tr>
73      <tr><td class="lineno" valign="top"></td><td class="left">   "HTTP/1.1" and, taken together, obsoletes RFC 2616.  Part 1 provides</td><td> </td><td class="right">   "HTTP/1.1" and, taken together, obsoletes RFC 2616.  Part 1 provides</td><td class="lineno" valign="top"></td></tr>
74      <tr><td class="lineno" valign="top"></td><td class="left">   an overview of HTTP and its associated terminology, defines the</td><td> </td><td class="right">   an overview of HTTP and its associated terminology, defines the</td><td class="lineno" valign="top"></td></tr>
75      <tr><td class="lineno" valign="top"></td><td class="left">   "http" and "https" Uniform Resource Identifier (URI) schemes, defines</td><td> </td><td class="right">   "http" and "https" Uniform Resource Identifier (URI) schemes, defines</td><td class="lineno" valign="top"></td></tr>
76      <tr><td class="lineno" valign="top"></td><td class="left">   the generic message syntax and parsing requirements for HTTP message</td><td> </td><td class="right">   the generic message syntax and parsing requirements for HTTP message</td><td class="lineno" valign="top"></td></tr>
77      <tr><td class="lineno" valign="top"></td><td class="left">   frames, and describes general security concerns for implementations.</td><td> </td><td class="right">   frames, and describes general security concerns for implementations.</td><td class="lineno" valign="top"></td></tr>
78      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
79      <tr><td class="lineno" valign="top"></td><td class="left">Editorial Note (To be removed by RFC Editor)</td><td> </td><td class="right">Editorial Note (To be removed by RFC Editor)</td><td class="lineno" valign="top"></td></tr>
80      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
81      <tr><td class="lineno" valign="top"></td><td class="left">   Discussion of this draft should take place on the HTTPBIS working</td><td> </td><td class="right">   Discussion of this draft should take place on the HTTPBIS working</td><td class="lineno" valign="top"></td></tr>
82      <tr><td><a name="diff0004" /></td></tr>
83      <tr><td class="lineno" valign="top"></td><td class="lblock">   group mailing list <span class="delete">(ietf-http-wg@w3.org).</span>  The current issues list is</td><td> </td><td class="rblock">   group mailing list <span class="insert">(ietf-http-wg@w3.org), which is archived at</span></td><td class="lineno" valign="top"></td></tr>
84      <tr><td class="lineno" valign="top"></td><td class="lblock">   at &lt;http://tools.ietf.org/wg/httpbis/trac/report/3&gt; and related</td><td> </td><td class="rblock"><span class="insert">   &lt;http://lists.w3.org/Archives/Public/ietf-http-wg/&gt;.</span></td><td class="lineno" valign="top"></td></tr>
85      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
86      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   The current issues list is at</td><td class="lineno" valign="top"></td></tr>
87      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   &lt;http://tools.ietf.org/wg/httpbis/trac/report/3&gt; and related</td><td class="lineno" valign="top"></td></tr>
88      <tr><td class="lineno" valign="top"></td><td class="left">   documents (including fancy diffs) can be found at</td><td> </td><td class="right">   documents (including fancy diffs) can be found at</td><td class="lineno" valign="top"></td></tr>
89      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</td><td> </td><td class="right">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</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="diff0005" /></td></tr>
92      <tr><td class="lineno" valign="top"></td><td class="lblock">   The changes in this draft are summarized in Appendix D.1<span class="delete">4</span>.</td><td> </td><td class="rblock">   The changes in this draft are summarized in Appendix D.1<span class="insert">5</span>.</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">Status of This Memo</td><td> </td><td class="right">Status of This Memo</td><td class="lineno" valign="top"></td></tr>
95      <tr><td><a name="diff0006" /></td></tr>
96      <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>
97      <tr><td class="lineno" valign="top"></td><td class="left">   This Internet-Draft is submitted in full conformance with the</td><td> </td><td class="right">   This Internet-Draft is submitted in full conformance with the</td><td class="lineno" valign="top"></td></tr>
98      <tr><td class="lineno" valign="top"></td><td class="left">   provisions of BCP 78 and BCP 79.</td><td> </td><td class="right">   provisions of BCP 78 and BCP 79.</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">   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>
101      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF).  Note that other groups may also distribute</td><td> </td><td class="right">   Task Force (IETF).  Note that other groups may also distribute</td><td class="lineno" valign="top"></td></tr>
102      <tr><td class="lineno" valign="top"></td><td class="left">   working documents as Internet-Drafts.  The list of current Internet-</td><td> </td><td class="right">   working documents as Internet-Drafts.  The list of current Internet-</td><td class="lineno" valign="top"></td></tr>
103      <tr><td class="lineno" valign="top"></td><td class="left">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td> </td><td class="right">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td class="lineno" valign="top"></td></tr>
104      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
105      <tr><td class="lineno" valign="top"></td><td class="left">   Internet-Drafts are draft documents valid for a maximum of six months</td><td> </td><td class="right">   Internet-Drafts are draft documents valid for a maximum of six months</td><td class="lineno" valign="top"></td></tr>
106      <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>
107      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
108      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 2, line 17</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 2, line 22</em></th><td></td></tr>
109      <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>
110      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF).  Note that other groups may also distribute</td><td> </td><td class="right">   Task Force (IETF).  Note that other groups may also distribute</td><td class="lineno" valign="top"></td></tr>
111      <tr><td class="lineno" valign="top"></td><td class="left">   working documents as Internet-Drafts.  The list of current Internet-</td><td> </td><td class="right">   working documents as Internet-Drafts.  The list of current Internet-</td><td class="lineno" valign="top"></td></tr>
112      <tr><td class="lineno" valign="top"></td><td class="left">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td> </td><td class="right">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td class="lineno" valign="top"></td></tr>
113      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
114      <tr><td class="lineno" valign="top"></td><td class="left">   Internet-Drafts are draft documents valid for a maximum of six months</td><td> </td><td class="right">   Internet-Drafts are draft documents valid for a maximum of six months</td><td class="lineno" valign="top"></td></tr>
115      <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>
116      <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>
117      <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>
118      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
119      <tr><td><a name="diff0007" /></td></tr>
120      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">September 15</span>, 2011.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">October 20</span>, 2011.</td><td class="lineno" valign="top"></td></tr>
121      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
122      <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>
123      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
124      <tr><td class="lineno" valign="top"></td><td class="left">   Copyright (c) 2011 IETF Trust and the persons identified as the</td><td> </td><td class="right">   Copyright (c) 2011 IETF Trust and the persons identified as the</td><td class="lineno" valign="top"></td></tr>
125      <tr><td class="lineno" valign="top"></td><td class="left">   document authors.  All rights reserved.</td><td> </td><td class="right">   document authors.  All rights reserved.</td><td class="lineno" valign="top"></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="left">   This document is subject to BCP 78 and the IETF Trust's Legal</td><td> </td><td class="right">   This document is subject to BCP 78 and the IETF Trust's Legal</td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="left">   Provisions Relating to IETF Documents</td><td> </td><td class="right">   Provisions Relating to IETF Documents</td><td class="lineno" valign="top"></td></tr>
129      <tr><td class="lineno" valign="top"></td><td class="left">   (http://trustee.ietf.org/license-info) in effect on the date of</td><td> </td><td class="right">   (http://trustee.ietf.org/license-info) in effect on the date of</td><td class="lineno" valign="top"></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="left">   publication of this document.  Please review these documents</td><td> </td><td class="right">   publication of this document.  Please review these documents</td><td class="lineno" valign="top"></td></tr>
131      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
132      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 3, line 45</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 3, line 49</em></th><td></td></tr>
133      <tr><td class="lineno" valign="top"></td><td class="left">     6.3.  Product Tokens . . . . . . . . . . . . . . . . . . . . . . 41</td><td> </td><td class="right">     6.3.  Product Tokens . . . . . . . . . . . . . . . . . . . . . . 41</td><td class="lineno" valign="top"></td></tr>
134      <tr><td class="lineno" valign="top"></td><td class="left">     6.4.  Quality Values . . . . . . . . . . . . . . . . . . . . . . 41</td><td> </td><td class="right">     6.4.  Quality Values . . . . . . . . . . . . . . . . . . . . . . 41</td><td class="lineno" valign="top"></td></tr>
135      <tr><td class="lineno" valign="top"></td><td class="left">   7.  Connections  . . . . . . . . . . . . . . . . . . . . . . . . . 41</td><td> </td><td class="right">   7.  Connections  . . . . . . . . . . . . . . . . . . . . . . . . . 41</td><td class="lineno" valign="top"></td></tr>
136      <tr><td class="lineno" valign="top"></td><td class="left">     7.1.  Persistent Connections . . . . . . . . . . . . . . . . . . 42</td><td> </td><td class="right">     7.1.  Persistent Connections . . . . . . . . . . . . . . . . . . 42</td><td class="lineno" valign="top"></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="left">       7.1.1.  Purpose  . . . . . . . . . . . . . . . . . . . . . . . 42</td><td> </td><td class="right">       7.1.1.  Purpose  . . . . . . . . . . . . . . . . . . . . . . . 42</td><td class="lineno" valign="top"></td></tr>
138      <tr><td class="lineno" valign="top"></td><td class="left">       7.1.2.  Overall Operation  . . . . . . . . . . . . . . . . . . 42</td><td> </td><td class="right">       7.1.2.  Overall Operation  . . . . . . . . . . . . . . . . . . 42</td><td class="lineno" valign="top"></td></tr>
139      <tr><td class="lineno" valign="top"></td><td class="left">       7.1.3.  Proxy Servers  . . . . . . . . . . . . . . . . . . . . 44</td><td> </td><td class="right">       7.1.3.  Proxy Servers  . . . . . . . . . . . . . . . . . . . . 44</td><td class="lineno" valign="top"></td></tr>
140      <tr><td class="lineno" valign="top"></td><td class="left">       7.1.4.  Practical Considerations . . . . . . . . . . . . . . . 46</td><td> </td><td class="right">       7.1.4.  Practical Considerations . . . . . . . . . . . . . . . 46</td><td class="lineno" valign="top"></td></tr>
141      <tr><td class="lineno" valign="top"></td><td class="left">     7.2.  Message Transmission Requirements  . . . . . . . . . . . . 47</td><td> </td><td class="right">     7.2.  Message Transmission Requirements  . . . . . . . . . . . . 47</td><td class="lineno" valign="top"></td></tr>
142      <tr><td class="lineno" valign="top"></td><td class="left">       7.2.1.  Persistent Connections and Flow Control  . . . . . . . 47</td><td> </td><td class="right">       7.2.1.  Persistent Connections and Flow Control  . . . . . . . 47</td><td class="lineno" valign="top"></td></tr>
143      <tr><td><a name="diff0008" /></td></tr>
144      <tr><td class="lineno" valign="top"></td><td class="lblock">       7.2.2.  Monitoring Connections for Error Status Messages . . . 4<span class="delete">7</span></td><td> </td><td class="rblock">       7.2.2.  Monitoring Connections for Error Status Messages . . . 4<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
145      <tr><td class="lineno" valign="top"></td><td class="left">       7.2.3.  Use of the 100 (Continue) Status . . . . . . . . . . . 48</td><td> </td><td class="right">       7.2.3.  Use of the 100 (Continue) Status . . . . . . . . . . . 48</td><td class="lineno" valign="top"></td></tr>
146      <tr><td class="lineno" valign="top"></td><td class="left">       7.2.4.  Client Behavior if Server Prematurely Closes</td><td> </td><td class="right">       7.2.4.  Client Behavior if Server Prematurely Closes</td><td class="lineno" valign="top"></td></tr>
147      <tr><td class="lineno" valign="top"></td><td class="left">               Connection . . . . . . . . . . . . . . . . . . . . . . 50</td><td> </td><td class="right">               Connection . . . . . . . . . . . . . . . . . . . . . . 50</td><td class="lineno" valign="top"></td></tr>
148      <tr><td class="lineno" valign="top"></td><td class="left">   8.  Miscellaneous notes that might disappear . . . . . . . . . . . 51</td><td> </td><td class="right">   8.  Miscellaneous notes that might disappear . . . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
149      <tr><td class="lineno" valign="top"></td><td class="left">     8.1.  Scheme aliases considered harmful  . . . . . . . . . . . . 51</td><td> </td><td class="right">     8.1.  Scheme aliases considered harmful  . . . . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
150      <tr><td class="lineno" valign="top"></td><td class="left">     8.2.  Use of HTTP for proxy communication  . . . . . . . . . . . 51</td><td> </td><td class="right">     8.2.  Use of HTTP for proxy communication  . . . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
151      <tr><td class="lineno" valign="top"></td><td class="left">     8.3.  Interception of HTTP for access control  . . . . . . . . . 51</td><td> </td><td class="right">     8.3.  Interception of HTTP for access control  . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
152      <tr><td class="lineno" valign="top"></td><td class="left">     8.4.  Use of HTTP by other protocols . . . . . . . . . . . . . . 51</td><td> </td><td class="right">     8.4.  Use of HTTP by other protocols . . . . . . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
153      <tr><td class="lineno" valign="top"></td><td class="left">     8.5.  Use of HTTP by media type specification  . . . . . . . . . 51</td><td> </td><td class="right">     8.5.  Use of HTTP by media type specification  . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
154      <tr><td class="lineno" valign="top"></td><td class="left">   9.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 51</td><td> </td><td class="right">   9.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
155      <tr><td class="lineno" valign="top"></td><td class="left">     9.1.  Connection . . . . . . . . . . . . . . . . . . . . . . . . 51</td><td> </td><td class="right">     9.1.  Connection . . . . . . . . . . . . . . . . . . . . . . . . 51</td><td class="lineno" valign="top"></td></tr>
156      <tr><td class="lineno" valign="top"></td><td class="left">     9.2.  Content-Length . . . . . . . . . . . . . . . . . . . . . . 53</td><td> </td><td class="right">     9.2.  Content-Length . . . . . . . . . . . . . . . . . . . . . . 53</td><td class="lineno" valign="top"></td></tr>
157      <tr><td class="lineno" valign="top"></td><td class="left">     9.3.  Date . . . . . . . . . . . . . . . . . . . . . . . . . . . 53</td><td> </td><td class="right">     9.3.  Date . . . . . . . . . . . . . . . . . . . . . . . . . . . 53</td><td class="lineno" valign="top"></td></tr>
158      <tr><td class="lineno" valign="top"></td><td class="left">       9.3.1.  Clockless Origin Server Operation  . . . . . . . . . . 54</td><td> </td><td class="right">       9.3.1.  Clockless Origin Server Operation  . . . . . . . . . . 54</td><td class="lineno" valign="top"></td></tr>
159      <tr><td class="lineno" valign="top"></td><td class="left">     9.4.  Host . . . . . . . . . . . . . . . . . . . . . . . . . . . 55</td><td> </td><td class="right">     9.4.  Host . . . . . . . . . . . . . . . . . . . . . . . . . . . 55</td><td class="lineno" valign="top"></td></tr>
160      <tr><td class="lineno" valign="top"></td><td class="left">     9.5.  TE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56</td><td> </td><td class="right">     9.5.  TE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56</td><td class="lineno" valign="top"></td></tr>
161      <tr><td class="lineno" valign="top"></td><td class="left">     9.6.  Trailer  . . . . . . . . . . . . . . . . . . . . . . . . . 57</td><td> </td><td class="right">     9.6.  Trailer  . . . . . . . . . . . . . . . . . . . . . . . . . 57</td><td class="lineno" valign="top"></td></tr>
162      <tr><td><a name="diff0009" /></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.7.  Transfer-Encoding  . . . . . . . . . . . . . . . . . . . . 5<span class="delete">8</span></td><td> </td><td class="rblock">     9.7.  Transfer-Encoding  . . . . . . . . . . . . . . . . . . . . 5<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
164      <tr><td class="lineno" valign="top"></td><td class="left">     9.8.  Upgrade  . . . . . . . . . . . . . . . . . . . . . . . . . 58</td><td> </td><td class="right">     9.8.  Upgrade  . . . . . . . . . . . . . . . . . . . . . . . . . 58</td><td class="lineno" valign="top"></td></tr>
165      <tr><td class="lineno" valign="top"></td><td class="left">       9.8.1.  Upgrade Token Registry . . . . . . . . . . . . . . . . 59</td><td> </td><td class="right">       9.8.1.  Upgrade Token Registry . . . . . . . . . . . . . . . . 59</td><td class="lineno" valign="top"></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="left">     9.9.  Via  . . . . . . . . . . . . . . . . . . . . . . . . . . . 60</td><td> </td><td class="right">     9.9.  Via  . . . . . . . . . . . . . . . . . . . . . . . . . . . 60</td><td class="lineno" valign="top"></td></tr>
167      <tr><td><a name="diff0010" /></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="lblock">   10. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="delete">62</span></td><td> </td><td class="rblock">   10. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="insert">61</span></td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.1. Header Field Registration  . . . . . . . . . . . . . . . . <span class="delete">62</span></td><td> </td><td class="rblock">     10.1. Header Field Registration  . . . . . . . . . . . . . . . . <span class="insert">61</span></td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno" valign="top"></td><td class="left">     10.2. URI Scheme Registration  . . . . . . . . . . . . . . . . . 62</td><td> </td><td class="right">     10.2. URI Scheme Registration  . . . . . . . . . . . . . . . . . 62</td><td class="lineno" valign="top"></td></tr>
171      <tr><td class="lineno" valign="top"></td><td class="left">     10.3. Internet Media Type Registrations  . . . . . . . . . . . . 62</td><td> </td><td class="right">     10.3. Internet Media Type Registrations  . . . . . . . . . . . . 62</td><td class="lineno" valign="top"></td></tr>
172      <tr><td class="lineno" valign="top"></td><td class="left">       10.3.1. Internet Media Type message/http . . . . . . . . . . . 62</td><td> </td><td class="right">       10.3.1. Internet Media Type message/http . . . . . . . . . . . 62</td><td class="lineno" valign="top"></td></tr>
173      <tr><td><a name="diff0011" /></td></tr>
174      <tr><td class="lineno" valign="top"></td><td class="lblock">       10.3.2. Internet Media Type application/http . . . . . . . . . <span class="delete">64</span></td><td> </td><td class="rblock">       10.3.2. Internet Media Type application/http . . . . . . . . . <span class="insert">63</span></td><td class="lineno" valign="top"></td></tr>
175      <tr><td class="lineno" valign="top"></td><td class="lblock">     10.4. Transfer Coding Registry . . . . . . . . . . . . . . . . . <span class="delete">65</span></td><td> </td><td class="rblock">     10.4. Transfer Coding Registry . . . . . . . . . . . . . . . . . <span class="insert">64</span></td><td class="lineno" valign="top"></td></tr>
176      <tr><td class="lineno" valign="top"></td><td class="left">     10.5. Upgrade Token Registration . . . . . . . . . . . . . . . . 65</td><td> </td><td class="right">     10.5. Upgrade Token Registration . . . . . . . . . . . . . . . . 65</td><td class="lineno" valign="top"></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="left">   11. Security Considerations  . . . . . . . . . . . . . . . . . . . 65</td><td> </td><td class="right">   11. Security Considerations  . . . . . . . . . . . . . . . . . . . 65</td><td class="lineno" valign="top"></td></tr>
178      <tr><td><a name="diff0012" /></td></tr>
179      <tr><td class="lineno" valign="top"></td><td class="lblock">     11.1. Personal Information . . . . . . . . . . . . . . . . . . . 6<span class="delete">6</span></td><td> </td><td class="rblock">     11.1. Personal Information . . . . . . . . . . . . . . . . . . . 6<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
180      <tr><td class="lineno" valign="top"></td><td class="left">     11.2. Abuse of Server Log Information  . . . . . . . . . . . . . 66</td><td> </td><td class="right">     11.2. Abuse of Server Log Information  . . . . . . . . . . . . . 66</td><td class="lineno" valign="top"></td></tr>
181      <tr><td class="lineno" valign="top"></td><td class="left">     11.3. Attacks Based On File and Path Names . . . . . . . . . . . 66</td><td> </td><td class="right">     11.3. Attacks Based On File and Path Names . . . . . . . . . . . 66</td><td class="lineno" valign="top"></td></tr>
182      <tr><td class="lineno" valign="top"></td><td class="left">     11.4. DNS Spoofing . . . . . . . . . . . . . . . . . . . . . . . 66</td><td> </td><td class="right">     11.4. DNS Spoofing . . . . . . . . . . . . . . . . . . . . . . . 66</td><td class="lineno" valign="top"></td></tr>
183      <tr><td class="lineno" valign="top"></td><td class="left">     11.5. Proxies and Caching  . . . . . . . . . . . . . . . . . . . 67</td><td> </td><td class="right">     11.5. Proxies and Caching  . . . . . . . . . . . . . . . . . . . 67</td><td class="lineno" valign="top"></td></tr>
184      <tr><td class="lineno" valign="top"></td><td class="left">     11.6. Denial of Service Attacks on Proxies . . . . . . . . . . . 68</td><td> </td><td class="right">     11.6. Denial of Service Attacks on Proxies . . . . . . . . . . . 68</td><td class="lineno" valign="top"></td></tr>
185      <tr><td class="lineno" valign="top"></td><td class="left">   12. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 68</td><td> </td><td class="right">   12. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 68</td><td class="lineno" valign="top"></td></tr>
186      <tr><td class="lineno" valign="top"></td><td class="left">   13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 69</td><td> </td><td class="right">   13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 69</td><td class="lineno" valign="top"></td></tr>
187      <tr><td class="lineno" valign="top"></td><td class="left">     13.1. Normative References . . . . . . . . . . . . . . . . . . . 69</td><td> </td><td class="right">     13.1. Normative References . . . . . . . . . . . . . . . . . . . 69</td><td class="lineno" valign="top"></td></tr>
188      <tr><td class="lineno" valign="top"></td><td class="left">     13.2. Informative References . . . . . . . . . . . . . . . . . . 71</td><td> </td><td class="right">     13.2. Informative References . . . . . . . . . . . . . . . . . . 71</td><td class="lineno" valign="top"></td></tr>
189      <tr><td><a name="diff0013" /></td></tr>
190      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix A.  Tolerant Applications . . . . . . . . . . . . . . . . <span class="delete">74</span></td><td> </td><td class="rblock">   Appendix A.  Tolerant Applications . . . . . . . . . . . . . . . . <span class="insert">73</span></td><td class="lineno" valign="top"></td></tr>
191      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix B.  HTTP Version History  . . . . . . . . . . . . . . . . <span class="delete">75</span></td><td> </td><td class="rblock">   Appendix B.  HTTP Version History  . . . . . . . . . . . . . . . . <span class="insert">74</span></td><td class="lineno" valign="top"></td></tr>
192      <tr><td class="lineno" valign="top"></td><td class="left">     B.1.  Changes from HTTP/1.0  . . . . . . . . . . . . . . . . . . 75</td><td> </td><td class="right">     B.1.  Changes from HTTP/1.0  . . . . . . . . . . . . . . . . . . 75</td><td class="lineno" valign="top"></td></tr>
193      <tr><td><a name="diff0014" /></td></tr>
194      <tr><td class="lineno" valign="top"></td><td class="lblock">       B.1.1.  Multi-homed Web Servers  . . . . . . . . . . . . . . . 7<span class="delete">6</span></td><td> </td><td class="rblock">       B.1.1.  Multi-homed Web Servers  . . . . . . . . . . . . . . . 7<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
195      <tr><td class="lineno" valign="top"></td><td class="left">       B.1.2.  Keep-Alive Connections . . . . . . . . . . . . . . . . 76</td><td> </td><td class="right">       B.1.2.  Keep-Alive Connections . . . . . . . . . . . . . . . . 76</td><td class="lineno" valign="top"></td></tr>
196      <tr><td><a name="diff0015" /></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="lblock">     B.2.  Changes from RFC 2616  . . . . . . . . . . . . . . . . . . 7<span class="delete">7</span></td><td> </td><td class="rblock">     B.2.  Changes from RFC 2616  . . . . . . . . . . . . . . . . . . 7<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
198      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 77</td><td> </td><td class="right">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 77</td><td class="lineno" valign="top"></td></tr>
199      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix D.  Change Log (to be removed by RFC Editor before</td><td> </td><td class="right">   Appendix D.  Change Log (to be removed by RFC Editor before</td><td class="lineno" valign="top"></td></tr>
200      <tr><td><a name="diff0016" /></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="lblock">                publication)  . . . . . . . . . . . . . . . . . . . . <span class="delete">82</span></td><td> </td><td class="rblock">                publication)  . . . . . . . . . . . . . . . . . . . . <span class="insert">81</span></td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.1.  Since RFC 2616 . . . . . . . . . . . . . . . . . . . . . . <span class="delete">82</span></td><td> </td><td class="rblock">     D.1.  Since RFC 2616 . . . . . . . . . . . . . . . . . . . . . . <span class="insert">81</span></td><td class="lineno" valign="top"></td></tr>
203      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.2.  Since draft-ietf-httpbis-p1-messaging-00 . . . . . . . . . <span class="delete">82</span></td><td> </td><td class="rblock">     D.2.  Since draft-ietf-httpbis-p1-messaging-00 . . . . . . . . . <span class="insert">81</span></td><td class="lineno" valign="top"></td></tr>
204      <tr><td class="lineno" valign="top"></td><td class="left">     D.3.  Since draft-ietf-httpbis-p1-messaging-01 . . . . . . . . . 83</td><td> </td><td class="right">     D.3.  Since draft-ietf-httpbis-p1-messaging-01 . . . . . . . . . 83</td><td class="lineno" valign="top"></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="left">     D.4.  Since draft-ietf-httpbis-p1-messaging-02 . . . . . . . . . 84</td><td> </td><td class="right">     D.4.  Since draft-ietf-httpbis-p1-messaging-02 . . . . . . . . . 84</td><td class="lineno" valign="top"></td></tr>
206      <tr><td><a name="diff0017" /></td></tr>
207      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.5.  Since draft-ietf-httpbis-p1-messaging-03 . . . . . . . . . 8<span class="delete">5</span></td><td> </td><td class="rblock">     D.5.  Since draft-ietf-httpbis-p1-messaging-03 . . . . . . . . . 8<span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
208      <tr><td class="lineno" valign="top"></td><td class="left">     D.6.  Since draft-ietf-httpbis-p1-messaging-04 . . . . . . . . . 85</td><td> </td><td class="right">     D.6.  Since draft-ietf-httpbis-p1-messaging-04 . . . . . . . . . 85</td><td class="lineno" valign="top"></td></tr>
209      <tr><td><a name="diff0018" /></td></tr>
210      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.7.  Since draft-ietf-httpbis-p1-messaging-05 . . . . . . . . . <span class="delete">86</span></td><td> </td><td class="rblock">     D.7.  Since draft-ietf-httpbis-p1-messaging-05 . . . . . . . . . <span class="insert">85</span></td><td class="lineno" valign="top"></td></tr>
211      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.8.  Since draft-ietf-httpbis-p1-messaging-06 . . . . . . . . . <span class="delete">87</span></td><td> </td><td class="rblock">     D.8.  Since draft-ietf-httpbis-p1-messaging-06 . . . . . . . . . <span class="insert">86</span></td><td class="lineno" valign="top"></td></tr>
212      <tr><td class="lineno" valign="top"></td><td class="left">     D.9.  Since draft-ietf-httpbis-p1-messaging-07 . . . . . . . . . 87</td><td> </td><td class="right">     D.9.  Since draft-ietf-httpbis-p1-messaging-07 . . . . . . . . . 87</td><td class="lineno" valign="top"></td></tr>
213      <tr><td><a name="diff0019" /></td></tr>
214      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.10. Since draft-ietf-httpbis-p1-messaging-08 . . . . . . . . . 8<span class="delete">8</span></td><td> </td><td class="rblock">     D.10. Since draft-ietf-httpbis-p1-messaging-08 . . . . . . . . . 8<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
215      <tr><td class="lineno" valign="top"></td><td class="left">     D.11. Since draft-ietf-httpbis-p1-messaging-09 . . . . . . . . . 88</td><td> </td><td class="right">     D.11. Since draft-ietf-httpbis-p1-messaging-09 . . . . . . . . . 88</td><td class="lineno" valign="top"></td></tr>
216      <tr><td><a name="diff0020" /></td></tr>
217      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.12. Since draft-ietf-httpbis-p1-messaging-10 . . . . . . . . . 8<span class="delete">9</span></td><td> </td><td class="rblock">     D.12. Since draft-ietf-httpbis-p1-messaging-10 . . . . . . . . . 8<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
218      <tr><td class="lineno" valign="top"></td><td class="left">     D.13. Since draft-ietf-httpbis-p1-messaging-11 . . . . . . . . . 89</td><td> </td><td class="right">     D.13. Since draft-ietf-httpbis-p1-messaging-11 . . . . . . . . . 89</td><td class="lineno" valign="top"></td></tr>
219      <tr><td><a name="diff0021" /></td></tr>
220      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.14. Since draft-ietf-httpbis-p1-messaging-12 . . . . . . . . . 90</td><td> </td><td class="rblock">     D.14. Since draft-ietf-httpbis-p1-messaging-12 . . . . . . . . . <span class="insert">89</span></td><td class="lineno" valign="top"></td></tr>
221      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     D.15. Since draft-ietf-httpbis-p1-messaging-13 . . . . . . . . .</span> 90</td><td class="lineno" valign="top"></td></tr>
222      <tr><td class="lineno" valign="top"></td><td class="left">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90</td><td> </td><td class="right">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90</td><td class="lineno" valign="top"></td></tr>
223      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
224      <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>
225      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
226      <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>
227      <tr><td class="lineno" valign="top"></td><td class="left">   request/response protocol that uses extensible semantics and MIME-</td><td> </td><td class="right">   request/response protocol that uses extensible semantics and MIME-</td><td class="lineno" valign="top"></td></tr>
228      <tr><td class="lineno" valign="top"></td><td class="left">   like message payloads for flexible interaction with network-based</td><td> </td><td class="right">   like message payloads for flexible interaction with network-based</td><td class="lineno" valign="top"></td></tr>
229      <tr><td class="lineno" valign="top"></td><td class="left">   hypertext information systems.  HTTP relies upon the Uniform Resource</td><td> </td><td class="right">   hypertext information systems.  HTTP relies upon the Uniform Resource</td><td class="lineno" valign="top"></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="left">   Identifier (URI) standard [RFC3986] to indicate the target resource</td><td> </td><td class="right">   Identifier (URI) standard [RFC3986] to indicate the target resource</td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno" valign="top"></td><td class="left">   and relationships between resources.  Messages are passed in a format</td><td> </td><td class="right">   and relationships between resources.  Messages are passed in a format</td><td class="lineno" valign="top"></td></tr>
232      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
233      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 10, line 33</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 10, line 33</em></th><td></td></tr>
234      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
235      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP was created for the World Wide Web architecture and has evolved</td><td> </td><td class="right">   HTTP was created for the World Wide Web architecture and has evolved</td><td class="lineno" valign="top"></td></tr>
236      <tr><td class="lineno" valign="top"></td><td class="left">   over time to support the scalability needs of a worldwide hypertext</td><td> </td><td class="right">   over time to support the scalability needs of a worldwide hypertext</td><td class="lineno" valign="top"></td></tr>
237      <tr><td class="lineno" valign="top"></td><td class="left">   system.  Much of that architecture is reflected in the terminology</td><td> </td><td class="right">   system.  Much of that architecture is reflected in the terminology</td><td class="lineno" valign="top"></td></tr>
238      <tr><td class="lineno" valign="top"></td><td class="left">   and syntax productions used to define HTTP.</td><td> </td><td class="right">   and syntax productions used to define HTTP.</td><td class="lineno" valign="top"></td></tr>
239      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="left">2.1.  Client/Server Messaging</td><td> </td><td class="right">2.1.  Client/Server Messaging</td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
242      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP is a stateless request/response protocol that operates by</td><td> </td><td class="right">   HTTP is a stateless request/response protocol that operates by</td><td class="lineno" valign="top"></td></tr>
243      <tr><td class="lineno" valign="top"></td><td class="left">   exchanging messages across a reliable transport or session-layer</td><td> </td><td class="right">   exchanging messages across a reliable transport or session-layer</td><td class="lineno" valign="top"></td></tr>
244      <tr><td><a name="diff0022" /></td></tr>
245      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">connection</span>.  An HTTP "client" is a program that establishes a</td><td> </td><td class="rblock">   <span class="insert">"connection"</span>.  An HTTP "client" is a program that establishes a</td><td class="lineno" valign="top"></td></tr>
246      <tr><td class="lineno" valign="top"></td><td class="left">   connection to a server for the purpose of sending one or more HTTP</td><td> </td><td class="right">   connection to a server for the purpose of sending one or more HTTP</td><td class="lineno" valign="top"></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="left">   requests.  An HTTP "server" is a program that accepts connections in</td><td> </td><td class="right">   requests.  An HTTP "server" is a program that accepts connections in</td><td class="lineno" valign="top"></td></tr>
248      <tr><td class="lineno" valign="top"></td><td class="left">   order to service HTTP requests by sending HTTP responses.</td><td> </td><td class="right">   order to service HTTP requests by sending HTTP responses.</td><td class="lineno" valign="top"></td></tr>
249      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
250      <tr><td class="lineno" valign="top"></td><td class="left">   Note that the terms client and server refer only to the roles that</td><td> </td><td class="right">   Note that the terms client and server refer only to the roles that</td><td class="lineno" valign="top"></td></tr>
251      <tr><td class="lineno" valign="top"></td><td class="left">   these programs perform for a particular connection.  The same program</td><td> </td><td class="right">   these programs perform for a particular connection.  The same program</td><td class="lineno" valign="top"></td></tr>
252      <tr><td class="lineno" valign="top"></td><td class="left">   might act as a client on some connections and a server on others.  We</td><td> </td><td class="right">   might act as a client on some connections and a server on others.  We</td><td class="lineno" valign="top"></td></tr>
253      <tr><td class="lineno" valign="top"></td><td class="left">   use the term "user agent" to refer to the program that initiates a</td><td> </td><td class="right">   use the term "user agent" to refer to the program that initiates a</td><td class="lineno" valign="top"></td></tr>
254      <tr><td class="lineno" valign="top"></td><td class="left">   request, such as a WWW browser, editor, or spider (web-traversing</td><td> </td><td class="right">   request, such as a WWW browser, editor, or spider (web-traversing</td><td class="lineno" valign="top"></td></tr>
255      <tr><td class="lineno" valign="top"></td><td class="left">   robot), and the term "origin server" to refer to the program that can</td><td> </td><td class="right">   robot), and the term "origin server" to refer to the program that can</td><td class="lineno" valign="top"></td></tr>
256      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
257      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 12, line 51</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 12, line 51</em></th><td></td></tr>
258      <tr><td class="lineno" valign="top"></td><td class="left">   chain, or to all connections along the chain.  Although the diagram</td><td> </td><td class="right">   chain, or to all connections along the chain.  Although the diagram</td><td class="lineno" valign="top"></td></tr>
259      <tr><td class="lineno" valign="top"></td><td class="left">   is linear, each participant might be engaged in multiple,</td><td> </td><td class="right">   is linear, each participant might be engaged in multiple,</td><td class="lineno" valign="top"></td></tr>
260      <tr><td class="lineno" valign="top"></td><td class="left">   simultaneous communications.  For example, B might be receiving</td><td> </td><td class="right">   simultaneous communications.  For example, B might be receiving</td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="left">   requests from many clients other than A, and/or forwarding requests</td><td> </td><td class="right">   requests from many clients other than A, and/or forwarding requests</td><td class="lineno" valign="top"></td></tr>
262      <tr><td class="lineno" valign="top"></td><td class="left">   to servers other than C, at the same time that it is handling A's</td><td> </td><td class="right">   to servers other than C, at the same time that it is handling A's</td><td class="lineno" valign="top"></td></tr>
263      <tr><td class="lineno" valign="top"></td><td class="left">   request.</td><td> </td><td class="right">   request.</td><td class="lineno" valign="top"></td></tr>
264      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
265      <tr><td class="lineno" valign="top"></td><td class="left">   We use the terms "upstream" and "downstream" to describe various</td><td> </td><td class="right">   We use the terms "upstream" and "downstream" to describe various</td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno" valign="top"></td><td class="left">   requirements in relation to the directional flow of a message: all</td><td> </td><td class="right">   requirements in relation to the directional flow of a message: all</td><td class="lineno" valign="top"></td></tr>
267      <tr><td class="lineno" valign="top"></td><td class="left">   messages flow from upstream to downstream.  Likewise, we use the</td><td> </td><td class="right">   messages flow from upstream to downstream.  Likewise, we use the</td><td class="lineno" valign="top"></td></tr>
268      <tr><td><a name="diff0023" /></td></tr>
269      <tr><td class="lineno" valign="top"></td><td class="lblock">   terms <span class="delete">"inbound"</span> and <span class="delete">"outbound"</span> to refer to directions in relation to</td><td> </td><td class="rblock">   terms <span class="insert">inbound</span> and <span class="insert">outbound</span> to refer to directions in relation to the</td><td class="lineno" valign="top"></td></tr>
270      <tr><td class="lineno" valign="top"></td><td class="lblock">   the request path: "inbound" means toward the origin server and</td><td> </td><td class="rblock">   request path: "inbound" means toward the origin server and "outbound"</td><td class="lineno" valign="top"></td></tr>
271      <tr><td class="lineno" valign="top"></td><td class="lblock">   "outbound" means toward the user agent.</td><td> </td><td class="rblock">   means toward the user agent.</td><td class="lineno" valign="top"></td></tr>
272      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
273      <tr><td class="lineno" valign="top"></td><td class="left">   A "proxy" is a message forwarding agent that is selected by the</td><td> </td><td class="right">   A "proxy" is a message forwarding agent that is selected by the</td><td class="lineno" valign="top"></td></tr>
274      <tr><td class="lineno" valign="top"></td><td class="left">   client, usually via local configuration rules, to receive requests</td><td> </td><td class="right">   client, usually via local configuration rules, to receive requests</td><td class="lineno" valign="top"></td></tr>
275      <tr><td class="lineno" valign="top"></td><td class="left">   for some type(s) of absolute URI and attempt to satisfy those</td><td> </td><td class="right">   for some type(s) of absolute URI and attempt to satisfy those</td><td class="lineno" valign="top"></td></tr>
276      <tr><td class="lineno" valign="top"></td><td class="left">   requests via translation through the HTTP interface.  Some</td><td> </td><td class="right">   requests via translation through the HTTP interface.  Some</td><td class="lineno" valign="top"></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="left">   translations are minimal, such as for proxy requests for "http" URIs,</td><td> </td><td class="right">   translations are minimal, such as for proxy requests for "http" URIs,</td><td class="lineno" valign="top"></td></tr>
278      <tr><td class="lineno" valign="top"></td><td class="left">   whereas other requests might require translation to and from entirely</td><td> </td><td class="right">   whereas other requests might require translation to and from entirely</td><td class="lineno" valign="top"></td></tr>
279      <tr><td class="lineno" valign="top"></td><td class="left">   different application-layer protocols.  Proxies are often used to</td><td> </td><td class="right">   different application-layer protocols.  Proxies are often used to</td><td class="lineno" valign="top"></td></tr>
280      <tr><td class="lineno" valign="top"></td><td class="left">   group an organization's HTTP requests through a common intermediary</td><td> </td><td class="right">   group an organization's HTTP requests through a common intermediary</td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="left">   for the sake of security, annotation services, or shared caching.</td><td> </td><td class="right">   for the sake of security, annotation services, or shared caching.</td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
283      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 24, line 40</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 24, line 40</em></th><td></td></tr>
284      <tr><td class="lineno" valign="top"></td><td class="left">   property of the message, not of the payload, and thus MAY be added or</td><td> </td><td class="right">   property of the message, not of the payload, and thus MAY be added or</td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="left">   removed by any implementation along the request/response chain under</td><td> </td><td class="right">   removed by any implementation along the request/response chain under</td><td class="lineno" valign="top"></td></tr>
286      <tr><td class="lineno" valign="top"></td><td class="left">   the constraints found in Section 6.2.</td><td> </td><td class="right">   the constraints found in Section 6.2.</td><td class="lineno" valign="top"></td></tr>
287      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="left">   If a message is received that has multiple Content-Length header</td><td> </td><td class="right">   If a message is received that has multiple Content-Length header</td><td class="lineno" valign="top"></td></tr>
289      <tr><td class="lineno" valign="top"></td><td class="left">   fields (Section 9.2) with field-values consisting of the same decimal</td><td> </td><td class="right">   fields (Section 9.2) with field-values consisting of the same decimal</td><td class="lineno" valign="top"></td></tr>
290      <tr><td class="lineno" valign="top"></td><td class="left">   value, or a single Content-Length header field with a field value</td><td> </td><td class="right">   value, or a single Content-Length header field with a field value</td><td class="lineno" valign="top"></td></tr>
291      <tr><td class="lineno" valign="top"></td><td class="left">   containing a list of identical decimal values (e.g., "Content-Length:</td><td> </td><td class="right">   containing a list of identical decimal values (e.g., "Content-Length:</td><td class="lineno" valign="top"></td></tr>
292      <tr><td class="lineno" valign="top"></td><td class="left">   42, 42"), indicating that duplicate Content-Length header fields have</td><td> </td><td class="right">   42, 42"), indicating that duplicate Content-Length header fields have</td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="left">   been generated or combined by an upstream message processor, then the</td><td> </td><td class="right">   been generated or combined by an upstream message processor, then the</td><td class="lineno" valign="top"></td></tr>
294      <tr><td><a name="diff0024" /></td></tr>
295      <tr><td class="lineno" valign="top"></td><td class="lblock">   recipient MUST replace the duplicated <span class="delete">fields or</span> field-values with a</td><td> </td><td class="rblock">   recipient MUST <span class="insert">either reject the message as invalid or</span> replace the</td><td class="lineno" valign="top"></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="lblock">   single valid Content-Length field containing that decimal value prior</td><td> </td><td class="rblock">   duplicated field-values with a single valid Content-Length field</td><td class="lineno" valign="top"></td></tr>
297      <tr><td class="lineno" valign="top"></td><td class="lblock">   to determining the message-body length.</td><td> </td><td class="rblock">   containing that decimal value prior to determining the message-body</td><td class="lineno" valign="top"></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   length.</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">   The rules for when a message-body is allowed in a message differ for</td><td> </td><td class="right">   The rules for when a message-body is allowed in a message differ for</td><td class="lineno" valign="top"></td></tr>
301      <tr><td class="lineno" valign="top"></td><td class="left">   requests and responses.</td><td> </td><td class="right">   requests and responses.</td><td class="lineno" valign="top"></td></tr>
302      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
303      <tr><td class="lineno" valign="top"></td><td class="left">   The presence of a message-body in a request is signaled by the</td><td> </td><td class="right">   The presence of a message-body in a request is signaled by the</td><td class="lineno" valign="top"></td></tr>
304      <tr><td class="lineno" valign="top"></td><td class="left">   inclusion of a Content-Length or Transfer-Encoding header field in</td><td> </td><td class="right">   inclusion of a Content-Length or Transfer-Encoding header field in</td><td class="lineno" valign="top"></td></tr>
305      <tr><td class="lineno" valign="top"></td><td class="left">   the request's header fields, even if the request method does not</td><td> </td><td class="right">   the request's header fields, even if the request method does not</td><td class="lineno" valign="top"></td></tr>
306      <tr><td class="lineno" valign="top"></td><td class="left">   define any use for a message-body.  This allows the request message</td><td> </td><td class="right">   define any use for a message-body.  This allows the request message</td><td class="lineno" valign="top"></td></tr>
307      <tr><td class="lineno" valign="top"></td><td class="left">   framing algorithm to be independent of method semantics.</td><td> </td><td class="right">   framing algorithm to be independent of method semantics.</td><td class="lineno" valign="top"></td></tr>
308      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
309      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
310      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 45, line 33</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 45, line 33</em></th><td></td></tr>
311      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="left">   Some features of HTTP/1.1, such as Digest Authentication, depend on</td><td> </td><td class="right">   Some features of HTTP/1.1, such as Digest Authentication, depend on</td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno" valign="top"></td><td class="left">   the value of certain end-to-end header fields.  A non-transforming</td><td> </td><td class="right">   the value of certain end-to-end header fields.  A non-transforming</td><td class="lineno" valign="top"></td></tr>
314      <tr><td class="lineno" valign="top"></td><td class="left">   proxy SHOULD NOT modify an end-to-end header field unless the</td><td> </td><td class="right">   proxy SHOULD NOT modify an end-to-end header field unless the</td><td class="lineno" valign="top"></td></tr>
315      <tr><td class="lineno" valign="top"></td><td class="left">   definition of that header field requires or specifically allows that.</td><td> </td><td class="right">   definition of that header field requires or specifically allows that.</td><td class="lineno" valign="top"></td></tr>
316      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="left">   A non-transforming proxy MUST NOT modify any of the following fields</td><td> </td><td class="right">   A non-transforming proxy MUST NOT modify any of the following fields</td><td class="lineno" valign="top"></td></tr>
318      <tr><td class="lineno" valign="top"></td><td class="left">   in a request or response, and it MUST NOT add any of these fields if</td><td> </td><td class="right">   in a request or response, and it MUST NOT add any of these fields if</td><td class="lineno" valign="top"></td></tr>
319      <tr><td class="lineno" valign="top"></td><td class="left">   not already present:</td><td> </td><td class="right">   not already present:</td><td class="lineno" valign="top"></td></tr>
320      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
321      <tr><td><a name="diff0025" /></td></tr>
322      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">o  Allow</span></td><td class="lineno" valign="top"></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="left">   o  Content-Location</td><td> </td><td class="right">   o  Content-Location</td><td class="lineno" valign="top"></td></tr>
325      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
326      <tr><td class="lineno" valign="top"></td><td class="left">   o  Content-MD5</td><td> </td><td class="right">   o  Content-MD5</td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
328      <tr><td class="lineno" valign="top"></td><td class="left">   o  ETag</td><td> </td><td class="right">   o  ETag</td><td class="lineno" valign="top"></td></tr>
329      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
330      <tr><td class="lineno" valign="top"></td><td class="left">   o  Last-Modified</td><td> </td><td class="right">   o  Last-Modified</td><td class="lineno" valign="top"></td></tr>
331      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
332      <tr><td><a name="diff0026" /></td></tr>
333      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">o  Server</span></td><td class="lineno" valign="top"></td></tr>
334      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
335      <tr><td class="lineno" valign="top"></td><td class="left">   A non-transforming proxy MUST NOT modify any of the following fields</td><td> </td><td class="right">   A non-transforming proxy MUST NOT modify any of the following fields</td><td class="lineno" valign="top"></td></tr>
336      <tr><td class="lineno" valign="top"></td><td class="left">   in a response:</td><td> </td><td class="right">   in a response:</td><td class="lineno" valign="top"></td></tr>
337      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="left">   o  Expires</td><td> </td><td class="right">   o  Expires</td><td class="lineno" valign="top"></td></tr>
339      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
340      <tr><td class="lineno" valign="top"></td><td class="left">   but it MAY add any of these fields if not already present.  If an</td><td> </td><td class="right">   but it MAY add any of these fields if not already present.  If an</td><td class="lineno" valign="top"></td></tr>
341      <tr><td class="lineno" valign="top"></td><td class="left">   Expires header field is added, it MUST be given a field-value</td><td> </td><td class="right">   Expires header field is added, it MUST be given a field-value</td><td class="lineno" valign="top"></td></tr>
342      <tr><td class="lineno" valign="top"></td><td class="left">   identical to that of the Date header field in that response.</td><td> </td><td class="right">   identical to that of the Date header field in that response.</td><td class="lineno" valign="top"></td></tr>
343      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
344      <tr><td class="lineno" valign="top"></td><td class="left">   A proxy MUST NOT modify or add any of the following fields in a</td><td> </td><td class="right">   A proxy MUST NOT modify or add any of the following fields in a</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-l8" /><small>skipping to change at</small><em> page 52, line 5</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 52, line 7</em></th><td></td></tr>
347      <tr><td class="lineno" valign="top"></td><td class="left">   be forwarded downstream by a proxy or gateway.  This mechanism also</td><td> </td><td class="right">   be forwarded downstream by a proxy or gateway.  This mechanism also</td><td class="lineno" valign="top"></td></tr>
348      <tr><td class="lineno" valign="top"></td><td class="left">   allows the sender to indicate which HTTP header fields used in the</td><td> </td><td class="right">   allows the sender to indicate which HTTP header fields used in the</td><td class="lineno" valign="top"></td></tr>
349      <tr><td class="lineno" valign="top"></td><td class="left">   message are only intended for the immediate recipient ("hop-by-hop"),</td><td> </td><td class="right">   message are only intended for the immediate recipient ("hop-by-hop"),</td><td class="lineno" valign="top"></td></tr>
350      <tr><td class="lineno" valign="top"></td><td class="left">   as opposed to all recipients on the chain ("end-to-end"), enabling</td><td> </td><td class="right">   as opposed to all recipients on the chain ("end-to-end"), enabling</td><td class="lineno" valign="top"></td></tr>
351      <tr><td class="lineno" valign="top"></td><td class="left">   the message to be self-descriptive and allowing future connection-</td><td> </td><td class="right">   the message to be self-descriptive and allowing future connection-</td><td class="lineno" valign="top"></td></tr>
352      <tr><td class="lineno" valign="top"></td><td class="left">   specific extensions to be deployed in HTTP without fear that they</td><td> </td><td class="right">   specific extensions to be deployed in HTTP without fear that they</td><td class="lineno" valign="top"></td></tr>
353      <tr><td class="lineno" valign="top"></td><td class="left">   will be blindly forwarded by previously deployed intermediaries.</td><td> </td><td class="right">   will be blindly forwarded by previously deployed intermediaries.</td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
355      <tr><td class="lineno" valign="top"></td><td class="left">   The Connection header field's value has the following grammar:</td><td> </td><td class="right">   The Connection header field's value has the following grammar:</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="diff0027" /></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="lblock">     Connection       = <span class="delete">"Connection" ":" OWS Connection-v</span></td><td> </td><td class="rblock">     Connection       = 1#connection-token</td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Connection-v     =</span> 1#connection-token</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
360      <tr><td class="lineno" valign="top"></td><td class="left">     connection-token = token</td><td> </td><td class="right">     connection-token = token</td><td class="lineno" valign="top"></td></tr>
361      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
362      <tr><td class="lineno" valign="top"></td><td class="left">   A proxy or gateway MUST parse a received Connection header field</td><td> </td><td class="right">   A proxy or gateway MUST parse a received Connection header field</td><td class="lineno" valign="top"></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="left">   before a message is forwarded and, for each connection-token in this</td><td> </td><td class="right">   before a message is forwarded and, for each connection-token in this</td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno" valign="top"></td><td class="left">   field, remove any header field(s) from the message with the same name</td><td> </td><td class="right">   field, remove any header field(s) from the message with the same name</td><td class="lineno" valign="top"></td></tr>
365      <tr><td class="lineno" valign="top"></td><td class="left">   as the connection-token, and then remove the Connection header field</td><td> </td><td class="right">   as the connection-token, and then remove the Connection header field</td><td class="lineno" valign="top"></td></tr>
366      <tr><td class="lineno" valign="top"></td><td class="left">   itself or replace it with the sender's own connection options for the</td><td> </td><td class="right">   itself or replace it with the sender's own connection options for the</td><td class="lineno" valign="top"></td></tr>
367      <tr><td class="lineno" valign="top"></td><td class="left">   forwarded message.</td><td> </td><td class="right">   forwarded message.</td><td class="lineno" valign="top"></td></tr>
368      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
369      <tr><td class="lineno" valign="top"></td><td class="left">   A sender MUST NOT include field-names in the Connection header field-</td><td> </td><td class="right">   A sender MUST NOT include field-names in the Connection header field-</td><td class="lineno" valign="top"></td></tr>
370      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
371      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 53, line 23</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 53, line 25</em></th><td></td></tr>
372      <tr><td class="lineno" valign="top"></td><td class="left">   body, in decimal number of octets, for any message other than a</td><td> </td><td class="right">   body, in decimal number of octets, for any message other than a</td><td class="lineno" valign="top"></td></tr>
373      <tr><td class="lineno" valign="top"></td><td class="left">   response to a HEAD request or a response with a status code of 304.</td><td> </td><td class="right">   response to a HEAD request or a response with a status code of 304.</td><td class="lineno" valign="top"></td></tr>
374      <tr><td class="lineno" valign="top"></td><td class="left">   In the case of a response to a HEAD request, Content-Length indicates</td><td> </td><td class="right">   In the case of a response to a HEAD request, Content-Length indicates</td><td class="lineno" valign="top"></td></tr>
375      <tr><td class="lineno" valign="top"></td><td class="left">   the size of the payload body (not including any potential transfer-</td><td> </td><td class="right">   the size of the payload body (not including any potential transfer-</td><td class="lineno" valign="top"></td></tr>
376      <tr><td class="lineno" valign="top"></td><td class="left">   coding) that would have been sent had the request been a GET.  In the</td><td> </td><td class="right">   coding) that would have been sent had the request been a GET.  In the</td><td class="lineno" valign="top"></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="left">   case of a 304 (Not Modified) response to a GET request, Content-</td><td> </td><td class="right">   case of a 304 (Not Modified) response to a GET request, Content-</td><td class="lineno" valign="top"></td></tr>
378      <tr><td class="lineno" valign="top"></td><td class="left">   Length indicates the size of the payload body (not including any</td><td> </td><td class="right">   Length indicates the size of the payload body (not including any</td><td class="lineno" valign="top"></td></tr>
379      <tr><td class="lineno" valign="top"></td><td class="left">   potential transfer-coding) that would have been sent in a 200 (OK)</td><td> </td><td class="right">   potential transfer-coding) that would have been sent in a 200 (OK)</td><td class="lineno" valign="top"></td></tr>
380      <tr><td class="lineno" valign="top"></td><td class="left">   response.</td><td> </td><td class="right">   response.</td><td class="lineno" valign="top"></td></tr>
381      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
382      <tr><td><a name="diff0028" /></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="lblock">     Content-Length   = <span class="delete">"Content-Length" ":" OWS 1*Content-Length-v</span></td><td> </td><td class="rblock">     Content-Length = 1*DIGIT</td><td class="lineno" valign="top"></td></tr>
384      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Content-Length-v =</span> 1*DIGIT</td><td> </td><td class="rblock"></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">   An example is</td><td> </td><td class="right">   An example is</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">     Content-Length: 3495</td><td> </td><td class="right">     Content-Length: 3495</td><td class="lineno" valign="top"></td></tr>
389      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="left">   Implementations SHOULD use this field to indicate the message-body</td><td> </td><td class="right">   Implementations SHOULD use this field to indicate the message-body</td><td class="lineno" valign="top"></td></tr>
391      <tr><td class="lineno" valign="top"></td><td class="left">   length when no transfer-coding is being applied and the payload's</td><td> </td><td class="right">   length when no transfer-coding is being applied and the payload's</td><td class="lineno" valign="top"></td></tr>
392      <tr><td class="lineno" valign="top"></td><td class="left">   body length can be determined prior to being transferred.</td><td> </td><td class="right">   body length can be determined prior to being transferred.</td><td class="lineno" valign="top"></td></tr>
393      <tr><td class="lineno" valign="top"></td><td class="left">   Section 3.3 describes how recipients determine the length of a</td><td> </td><td class="right">   Section 3.3 describes how recipients determine the length of a</td><td class="lineno" valign="top"></td></tr>
394      <tr><td class="lineno" valign="top"></td><td class="left">   message-body.</td><td> </td><td class="right">   message-body.</td><td class="lineno" valign="top"></td></tr>
395      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
396      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 53, line 50</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 53, line 51</em></th><td></td></tr>
397      <tr><td class="lineno" valign="top"></td><td class="left">   field used within the "message/external-body" content-type.</td><td> </td><td class="right">   field used within the "message/external-body" content-type.</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">9.3.  Date</td><td> </td><td class="right">9.3.  Date</td><td class="lineno" valign="top"></td></tr>
400      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
401      <tr><td class="lineno" valign="top"></td><td class="left">   The "Date" header field represents the date and time at which the</td><td> </td><td class="right">   The "Date" header field represents the date and time at which the</td><td class="lineno" valign="top"></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="left">   message was originated, having the same semantics as the Origination</td><td> </td><td class="right">   message was originated, having the same semantics as the Origination</td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno" valign="top"></td><td class="left">   Date Field (orig-date) defined in Section 3.6.1 of [RFC5322].  The</td><td> </td><td class="right">   Date Field (orig-date) defined in Section 3.6.1 of [RFC5322].  The</td><td class="lineno" valign="top"></td></tr>
404      <tr><td class="lineno" valign="top"></td><td class="left">   field value is an HTTP-date, as described in Section 6.1; it MUST be</td><td> </td><td class="right">   field value is an HTTP-date, as described in Section 6.1; it MUST be</td><td class="lineno" valign="top"></td></tr>
405      <tr><td class="lineno" valign="top"></td><td class="left">   sent in rfc1123-date format.</td><td> </td><td class="right">   sent in rfc1123-date format.</td><td class="lineno" valign="top"></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
407      <tr><td><a name="diff0029" /></td></tr>
408      <tr><td class="lineno" valign="top"></td><td class="lblock">     Date   = <span class="delete">"Date" ":" OWS Date-v</span></td><td> </td><td class="rblock">     Date = HTTP-date</td><td class="lineno" valign="top"></td></tr>
409      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Date-v =</span> HTTP-date</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
411      <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>
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">     Date: Tue, 15 Nov 1994 08:12:31 GMT</td><td> </td><td class="right">     Date: Tue, 15 Nov 1994 08:12:31 GMT</td><td class="lineno" valign="top"></td></tr>
414      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
415      <tr><td class="lineno" valign="top"></td><td class="left">   Origin servers MUST include a Date header field in all responses,</td><td> </td><td class="right">   Origin servers MUST include a Date header field in all responses,</td><td class="lineno" valign="top"></td></tr>
416      <tr><td class="lineno" valign="top"></td><td class="left">   except in these cases:</td><td> </td><td class="right">   except in these cases:</td><td class="lineno" valign="top"></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
418      <tr><td class="lineno" valign="top"></td><td class="left">   1.  If the response status code is 100 (Continue) or 101 (Switching</td><td> </td><td class="right">   1.  If the response status code is 100 (Continue) or 101 (Switching</td><td class="lineno" valign="top"></td></tr>
419      <tr><td class="lineno" valign="top"></td><td class="left">       Protocols), the response MAY include a Date header field, at the</td><td> </td><td class="right">       Protocols), the response MAY include a Date header field, at the</td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
421      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 55, line 14</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 55, line 14</em></th><td></td></tr>
422      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="left">9.4.  Host</td><td> </td><td class="right">9.4.  Host</td><td class="lineno" valign="top"></td></tr>
424      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="left">   The "Host" header field in a request provides the host and port</td><td> </td><td class="right">   The "Host" header field in a request provides the host and port</td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno" valign="top"></td><td class="left">   information from the target resource's URI, enabling the origin</td><td> </td><td class="right">   information from the target resource's URI, enabling the origin</td><td class="lineno" valign="top"></td></tr>
427      <tr><td class="lineno" valign="top"></td><td class="left">   server to distinguish between resources while servicing requests for</td><td> </td><td class="right">   server to distinguish between resources while servicing requests for</td><td class="lineno" valign="top"></td></tr>
428      <tr><td class="lineno" valign="top"></td><td class="left">   multiple host names on a single IP address.  Since the Host field-</td><td> </td><td class="right">   multiple host names on a single IP address.  Since the Host field-</td><td class="lineno" valign="top"></td></tr>
429      <tr><td class="lineno" valign="top"></td><td class="left">   value is critical information for handling a request, it SHOULD be</td><td> </td><td class="right">   value is critical information for handling a request, it SHOULD be</td><td class="lineno" valign="top"></td></tr>
430      <tr><td class="lineno" valign="top"></td><td class="left">   sent as the first header field following the Request-Line.</td><td> </td><td class="right">   sent as the first header field following the Request-Line.</td><td class="lineno" valign="top"></td></tr>
431      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
432      <tr><td><a name="diff0030" /></td></tr>
433      <tr><td class="lineno" valign="top"></td><td class="lblock">     Host   = <span class="delete">"Host" ":" OWS Host-v</span></td><td> </td><td class="rblock">     Host = uri-host [ ":" port ] ; Section 2.6.1</td><td class="lineno" valign="top"></td></tr>
434      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Host-v =</span> uri-host [ ":" port ] ; Section 2.6.1</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
435      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
436      <tr><td class="lineno" valign="top"></td><td class="left">   A client MUST send a Host header field in all HTTP/1.1 request</td><td> </td><td class="right">   A client MUST send a Host header field in all HTTP/1.1 request</td><td class="lineno" valign="top"></td></tr>
437      <tr><td class="lineno" valign="top"></td><td class="left">   messages.  If the target resource's URI includes an authority</td><td> </td><td class="right">   messages.  If the target resource's URI includes an authority</td><td class="lineno" valign="top"></td></tr>
438      <tr><td class="lineno" valign="top"></td><td class="left">   component, then the Host field-value MUST be identical to that</td><td> </td><td class="right">   component, then the Host field-value MUST be identical to that</td><td class="lineno" valign="top"></td></tr>
439      <tr><td class="lineno" valign="top"></td><td class="left">   authority component after excluding any userinfo (Section 2.6.1).  If</td><td> </td><td class="right">   authority component after excluding any userinfo (Section 2.6.1).  If</td><td class="lineno" valign="top"></td></tr>
440      <tr><td class="lineno" valign="top"></td><td class="left">   the authority component is missing or undefined for the target</td><td> </td><td class="right">   the authority component is missing or undefined for the target</td><td class="lineno" valign="top"></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="left">   resource's URI, then the Host header field MUST be sent with an empty</td><td> </td><td class="right">   resource's URI, then the Host header field MUST be sent with an empty</td><td class="lineno" valign="top"></td></tr>
442      <tr><td class="lineno" valign="top"></td><td class="left">   field-value.</td><td> </td><td class="right">   field-value.</td><td class="lineno" valign="top"></td></tr>
443      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
444      <tr><td class="lineno" valign="top"></td><td class="left">   For example, a GET request to the origin server for</td><td> </td><td class="right">   For example, a GET request to the origin server for</td><td class="lineno" valign="top"></td></tr>
445      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
446      <tr bgcolor="gray" ><td></td><th><a name="part-l12" /><small>skipping to change at</small><em> page 56, line 20</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 56, line 19</em></th><td></td></tr>
447      <tr><td class="lineno" valign="top"></td><td class="left">9.5.  TE</td><td> </td><td class="right">9.5.  TE</td><td class="lineno" valign="top"></td></tr>
448      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
449      <tr><td class="lineno" valign="top"></td><td class="left">   The "TE" header field indicates what extension transfer-codings it is</td><td> </td><td class="right">   The "TE" header field indicates what extension transfer-codings it is</td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="left">   willing to accept in the response, and whether or not it is willing</td><td> </td><td class="right">   willing to accept in the response, and whether or not it is willing</td><td class="lineno" valign="top"></td></tr>
451      <tr><td class="lineno" valign="top"></td><td class="left">   to accept trailer fields in a chunked transfer-coding.</td><td> </td><td class="right">   to accept trailer fields in a chunked transfer-coding.</td><td class="lineno" valign="top"></td></tr>
452      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="left">   Its value consists of the keyword "trailers" and/or a comma-separated</td><td> </td><td class="right">   Its value consists of the keyword "trailers" and/or a comma-separated</td><td class="lineno" valign="top"></td></tr>
454      <tr><td class="lineno" valign="top"></td><td class="left">   list of extension transfer-coding names with optional accept</td><td> </td><td class="right">   list of extension transfer-coding names with optional accept</td><td class="lineno" valign="top"></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="left">   parameters (as described in Section 6.2).</td><td> </td><td class="right">   parameters (as described in Section 6.2).</td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
457      <tr><td><a name="diff0031" /></td></tr>
458      <tr><td class="lineno" valign="top"></td><td class="lblock">     TE        = <span class="delete">"TE" ":" OWS TE-v</span></td><td> </td><td class="rblock">     TE        = #t-codings</td><td class="lineno" valign="top"></td></tr>
459      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     TE-v      =</span> #t-codings</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
460      <tr><td class="lineno" valign="top"></td><td class="left">     t-codings = "trailers" / ( transfer-extension [ te-params ] )</td><td> </td><td class="right">     t-codings = "trailers" / ( transfer-extension [ te-params ] )</td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno" valign="top"></td><td class="left">     te-params = OWS ";" OWS "q=" qvalue *( te-ext )</td><td> </td><td class="right">     te-params = OWS ";" OWS "q=" qvalue *( te-ext )</td><td class="lineno" valign="top"></td></tr>
462      <tr><td class="lineno" valign="top"></td><td class="left">     te-ext    = OWS ";" OWS token [ "=" word ]</td><td> </td><td class="right">     te-ext    = OWS ";" OWS token [ "=" word ]</td><td class="lineno" valign="top"></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
464      <tr><td class="lineno" valign="top"></td><td class="left">   The presence of the keyword "trailers" indicates that the client is</td><td> </td><td class="right">   The presence of the keyword "trailers" indicates that the client is</td><td class="lineno" valign="top"></td></tr>
465      <tr><td class="lineno" valign="top"></td><td class="left">   willing to accept trailer fields in a chunked transfer-coding, as</td><td> </td><td class="right">   willing to accept trailer fields in a chunked transfer-coding, as</td><td class="lineno" valign="top"></td></tr>
466      <tr><td class="lineno" valign="top"></td><td class="left">   defined in Section 6.2.1.  This keyword is reserved for use with</td><td> </td><td class="right">   defined in Section 6.2.1.  This keyword is reserved for use with</td><td class="lineno" valign="top"></td></tr>
467      <tr><td class="lineno" valign="top"></td><td class="left">   transfer-coding values even though it does not itself represent a</td><td> </td><td class="right">   transfer-coding values even though it does not itself represent a</td><td class="lineno" valign="top"></td></tr>
468      <tr><td class="lineno" valign="top"></td><td class="left">   transfer-coding.</td><td> </td><td class="right">   transfer-coding.</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"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
471      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 57, line 29</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 57, line 28</em></th><td></td></tr>
472      <tr><td class="lineno" valign="top"></td><td class="left">   If the TE field-value is empty or if no TE field is present, the only</td><td> </td><td class="right">   If the TE field-value is empty or if no TE field is present, the only</td><td class="lineno" valign="top"></td></tr>
473      <tr><td class="lineno" valign="top"></td><td class="left">   transfer-coding is "chunked".  A message with no transfer-coding is</td><td> </td><td class="right">   transfer-coding is "chunked".  A message with no transfer-coding is</td><td class="lineno" valign="top"></td></tr>
474      <tr><td class="lineno" valign="top"></td><td class="left">   always acceptable.</td><td> </td><td class="right">   always acceptable.</td><td class="lineno" valign="top"></td></tr>
475      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
476      <tr><td class="lineno" valign="top"></td><td class="left">9.6.  Trailer</td><td> </td><td class="right">9.6.  Trailer</td><td class="lineno" valign="top"></td></tr>
477      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
478      <tr><td class="lineno" valign="top"></td><td class="left">   The "Trailer" header field indicates that the given set of header</td><td> </td><td class="right">   The "Trailer" header field indicates that the given set of header</td><td class="lineno" valign="top"></td></tr>
479      <tr><td class="lineno" valign="top"></td><td class="left">   fields is present in the trailer of a message encoded with chunked</td><td> </td><td class="right">   fields is present in the trailer of a message encoded with chunked</td><td class="lineno" valign="top"></td></tr>
480      <tr><td class="lineno" valign="top"></td><td class="left">   transfer-coding.</td><td> </td><td class="right">   transfer-coding.</td><td class="lineno" valign="top"></td></tr>
481      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
482      <tr><td><a name="diff0032" /></td></tr>
483      <tr><td class="lineno" valign="top"></td><td class="lblock">     Trailer   = <span class="delete">"Trailer" ":" OWS Trailer-v</span></td><td> </td><td class="rblock">     Trailer = 1#field-name</td><td class="lineno" valign="top"></td></tr>
484      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Trailer-v =</span> 1#field-name</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
485      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
486      <tr><td class="lineno" valign="top"></td><td class="left">   An HTTP/1.1 message SHOULD include a Trailer header field in a</td><td> </td><td class="right">   An HTTP/1.1 message SHOULD include a Trailer header field in a</td><td class="lineno" valign="top"></td></tr>
487      <tr><td class="lineno" valign="top"></td><td class="left">   message using chunked transfer-coding with a non-empty trailer.</td><td> </td><td class="right">   message using chunked transfer-coding with a non-empty trailer.</td><td class="lineno" valign="top"></td></tr>
488      <tr><td class="lineno" valign="top"></td><td class="left">   Doing so allows the recipient to know which header fields to expect</td><td> </td><td class="right">   Doing so allows the recipient to know which header fields to expect</td><td class="lineno" valign="top"></td></tr>
489      <tr><td class="lineno" valign="top"></td><td class="left">   in the trailer.</td><td> </td><td class="right">   in the trailer.</td><td class="lineno" valign="top"></td></tr>
490      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
491      <tr><td class="lineno" valign="top"></td><td class="left">   If no Trailer header field is present, the trailer SHOULD NOT include</td><td> </td><td class="right">   If no Trailer header field is present, the trailer SHOULD NOT include</td><td class="lineno" valign="top"></td></tr>
492      <tr><td class="lineno" valign="top"></td><td class="left">   any header fields.  See Section 6.2.1 for restrictions on the use of</td><td> </td><td class="right">   any header fields.  See Section 6.2.1 for restrictions on the use of</td><td class="lineno" valign="top"></td></tr>
493      <tr><td class="lineno" valign="top"></td><td class="left">   trailer fields in a "chunked" transfer-coding.</td><td> </td><td class="right">   trailer fields in a "chunked" transfer-coding.</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"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
496      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 58, line 13</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 58, line 7</em></th><td></td></tr>
497      <tr><td class="lineno" valign="top"></td><td class="left">   o  Trailer</td><td> </td><td class="right">   o  Trailer</td><td class="lineno" valign="top"></td></tr>
498      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
499      <tr><td class="lineno" valign="top"></td><td class="left">9.7.  Transfer-Encoding</td><td> </td><td class="right">9.7.  Transfer-Encoding</td><td class="lineno" valign="top"></td></tr>
500      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
501      <tr><td class="lineno" valign="top"></td><td class="left">   The "Transfer-Encoding" header field indicates what transfer-codings</td><td> </td><td class="right">   The "Transfer-Encoding" header field indicates what transfer-codings</td><td class="lineno" valign="top"></td></tr>
502      <tr><td class="lineno" valign="top"></td><td class="left">   (if any) have been applied to the message body.  It differs from</td><td> </td><td class="right">   (if any) have been applied to the message body.  It differs from</td><td class="lineno" valign="top"></td></tr>
503      <tr><td class="lineno" valign="top"></td><td class="left">   Content-Encoding (Section 2.2 of [Part3]) in that transfer-codings</td><td> </td><td class="right">   Content-Encoding (Section 2.2 of [Part3]) in that transfer-codings</td><td class="lineno" valign="top"></td></tr>
504      <tr><td class="lineno" valign="top"></td><td class="left">   are a property of the message (and therefore are removed by</td><td> </td><td class="right">   are a property of the message (and therefore are removed by</td><td class="lineno" valign="top"></td></tr>
505      <tr><td class="lineno" valign="top"></td><td class="left">   intermediaries), whereas content-codings are not.</td><td> </td><td class="right">   intermediaries), whereas content-codings are not.</td><td class="lineno" valign="top"></td></tr>
506      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
507      <tr><td><a name="diff0033" /></td></tr>
508      <tr><td class="lineno" valign="top"></td><td class="lblock">     Transfer-Encoding   = <span class="delete">"Transfer-Encoding" ":" OWS</span></td><td> </td><td class="rblock">     Transfer-Encoding = 1#transfer-coding</td><td class="lineno" valign="top"></td></tr>
509      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                           Transfer-Encoding-v</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
510      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Transfer-Encoding-v =</span> 1#transfer-coding</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></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">   Transfer-codings are defined in Section 6.2.  An example is:</td><td> </td><td class="right">   Transfer-codings are defined in Section 6.2.  An example is:</td><td class="lineno" valign="top"></td></tr>
513      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
514      <tr><td class="lineno" valign="top"></td><td class="left">     Transfer-Encoding: chunked</td><td> </td><td class="right">     Transfer-Encoding: chunked</td><td class="lineno" valign="top"></td></tr>
515      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
516      <tr><td class="lineno" valign="top"></td><td class="left">   If multiple encodings have been applied to a representation, the</td><td> </td><td class="right">   If multiple encodings have been applied to a representation, the</td><td class="lineno" valign="top"></td></tr>
517      <tr><td class="lineno" valign="top"></td><td class="left">   transfer-codings MUST be listed in the order in which they were</td><td> </td><td class="right">   transfer-codings MUST be listed in the order in which they were</td><td class="lineno" valign="top"></td></tr>
518      <tr><td class="lineno" valign="top"></td><td class="left">   applied.  Additional information about the encoding parameters MAY be</td><td> </td><td class="right">   applied.  Additional information about the encoding parameters MAY be</td><td class="lineno" valign="top"></td></tr>
519      <tr><td class="lineno" valign="top"></td><td class="left">   provided by other header fields not defined by this specification.</td><td> </td><td class="right">   provided by other header fields not defined by this specification.</td><td class="lineno" valign="top"></td></tr>
520      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
521      <tr><td class="lineno" valign="top"></td><td class="left">   Many older HTTP/1.0 applications do not understand the Transfer-</td><td> </td><td class="right">   Many older HTTP/1.0 applications do not understand the Transfer-</td><td class="lineno" valign="top"></td></tr>
522      <tr><td class="lineno" valign="top"></td><td class="left">   Encoding header field.</td><td> </td><td class="right">   Encoding header field.</td><td class="lineno" valign="top"></td></tr>
523      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
524      <tr><td class="lineno" valign="top"></td><td class="left">9.8.  Upgrade</td><td> </td><td class="right">9.8.  Upgrade</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">   The "Upgrade" header field allows the client to specify what</td><td> </td><td class="right">   The "Upgrade" header field allows the client to specify what</td><td class="lineno" valign="top"></td></tr>
527      <tr><td class="lineno" valign="top"></td><td class="left">   additional communication protocols it would like to use, if the</td><td> </td><td class="right">   additional communication protocols it would like to use, if the</td><td class="lineno" valign="top"></td></tr>
528      <tr><td class="lineno" valign="top"></td><td class="left">   server chooses to switch protocols.  Servers can use it to indicate</td><td> </td><td class="right">   server chooses to switch protocols.  Servers can use it to indicate</td><td class="lineno" valign="top"></td></tr>
529      <tr><td class="lineno" valign="top"></td><td class="left">   what protocols they are willing to switch to.</td><td> </td><td class="right">   what protocols they are willing to switch to.</td><td class="lineno" valign="top"></td></tr>
530      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
531      <tr><td><a name="diff0034" /></td></tr>
532      <tr><td class="lineno" valign="top"></td><td class="lblock">     Upgrade   = <span class="delete">"Upgrade" ":" OWS Upgrade-v</span></td><td> </td><td class="rblock">     Upgrade = 1#product</td><td class="lineno" valign="top"></td></tr>
533      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Upgrade-v =</span> 1#product</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
534      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
535      <tr><td class="lineno" valign="top"></td><td class="left">   For example,</td><td> </td><td class="right">   For example,</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">     Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11</td><td> </td><td class="right">     Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11</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 Upgrade header field is intended to provide a simple mechanism</td><td> </td><td class="right">   The Upgrade header field is intended to provide a simple mechanism</td><td class="lineno" valign="top"></td></tr>
540      <tr><td class="lineno" valign="top"></td><td class="left">   for transition from HTTP/1.1 to some other, incompatible protocol.</td><td> </td><td class="right">   for transition from HTTP/1.1 to some other, incompatible protocol.</td><td class="lineno" valign="top"></td></tr>
541      <tr><td class="lineno" valign="top"></td><td class="left">   It does so by allowing the client to advertise its desire to use</td><td> </td><td class="right">   It does so by allowing the client to advertise its desire to use</td><td class="lineno" valign="top"></td></tr>
542      <tr><td class="lineno" valign="top"></td><td class="left">   another protocol, such as a later version of HTTP with a higher major</td><td> </td><td class="right">   another protocol, such as a later version of HTTP with a higher major</td><td class="lineno" valign="top"></td></tr>
543      <tr><td class="lineno" valign="top"></td><td class="left">   version number, even though the current request has been made using</td><td> </td><td class="right">   version number, even though the current request has been made using</td><td class="lineno" valign="top"></td></tr>
544      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
545      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 60, line 38</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 60, line 28</em></th><td></td></tr>
546      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
547      <tr><td class="lineno" valign="top"></td><td class="left">   The "Via" header field MUST be sent by a proxy or gateway to indicate</td><td> </td><td class="right">   The "Via" header field MUST be sent by a proxy or gateway to indicate</td><td class="lineno" valign="top"></td></tr>
548      <tr><td class="lineno" valign="top"></td><td class="left">   the intermediate protocols and recipients between the user agent and</td><td> </td><td class="right">   the intermediate protocols and recipients between the user agent and</td><td class="lineno" valign="top"></td></tr>
549      <tr><td class="lineno" valign="top"></td><td class="left">   the server on requests, and between the origin server and the client</td><td> </td><td class="right">   the server on requests, and between the origin server and the client</td><td class="lineno" valign="top"></td></tr>
550      <tr><td class="lineno" valign="top"></td><td class="left">   on responses.  It is analogous to the "Received" field used by email</td><td> </td><td class="right">   on responses.  It is analogous to the "Received" field used by email</td><td class="lineno" valign="top"></td></tr>
551      <tr><td class="lineno" valign="top"></td><td class="left">   systems (Section 3.6.7 of [RFC5322]) and is intended to be used for</td><td> </td><td class="right">   systems (Section 3.6.7 of [RFC5322]) and is intended to be used for</td><td class="lineno" valign="top"></td></tr>
552      <tr><td class="lineno" valign="top"></td><td class="left">   tracking message forwards, avoiding request loops, and identifying</td><td> </td><td class="right">   tracking message forwards, avoiding request loops, and identifying</td><td class="lineno" valign="top"></td></tr>
553      <tr><td class="lineno" valign="top"></td><td class="left">   the protocol capabilities of all senders along the request/response</td><td> </td><td class="right">   the protocol capabilities of all senders along the request/response</td><td class="lineno" valign="top"></td></tr>
554      <tr><td class="lineno" valign="top"></td><td class="left">   chain.</td><td> </td><td class="right">   chain.</td><td class="lineno" valign="top"></td></tr>
555      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
556      <tr><td><a name="diff0035" /></td></tr>
557      <tr><td class="lineno" valign="top"></td><td class="lblock">     Via               = <span class="delete">"Via" ":" OWS Via-v</span></td><td> </td><td class="rblock">     Via               = 1#( received-protocol RWS received-by</td><td class="lineno" valign="top"></td></tr>
558      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     Via-v             =</span> 1#( received-protocol RWS received-by</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
559      <tr><td class="lineno" valign="top"></td><td class="left">                             [ RWS comment ] )</td><td> </td><td class="right">                             [ RWS comment ] )</td><td class="lineno" valign="top"></td></tr>
560      <tr><td class="lineno" valign="top"></td><td class="left">     received-protocol = [ protocol-name "/" ] protocol-version</td><td> </td><td class="right">     received-protocol = [ protocol-name "/" ] protocol-version</td><td class="lineno" valign="top"></td></tr>
561      <tr><td class="lineno" valign="top"></td><td class="left">     protocol-name     = token</td><td> </td><td class="right">     protocol-name     = token</td><td class="lineno" valign="top"></td></tr>
562      <tr><td class="lineno" valign="top"></td><td class="left">     protocol-version  = token</td><td> </td><td class="right">     protocol-version  = token</td><td class="lineno" valign="top"></td></tr>
563      <tr><td class="lineno" valign="top"></td><td class="left">     received-by       = ( uri-host [ ":" port ] ) / pseudonym</td><td> </td><td class="right">     received-by       = ( uri-host [ ":" port ] ) / pseudonym</td><td class="lineno" valign="top"></td></tr>
564      <tr><td class="lineno" valign="top"></td><td class="left">     pseudonym         = token</td><td> </td><td class="right">     pseudonym         = token</td><td class="lineno" valign="top"></td></tr>
565      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
566      <tr><td class="lineno" valign="top"></td><td class="left">   The received-protocol indicates the protocol version of the message</td><td> </td><td class="right">   The received-protocol indicates the protocol version of the message</td><td class="lineno" valign="top"></td></tr>
567      <tr><td class="lineno" valign="top"></td><td class="left">   received by the server or client along each segment of the request/</td><td> </td><td class="right">   received by the server or client along each segment of the request/</td><td class="lineno" valign="top"></td></tr>
568      <tr><td class="lineno" valign="top"></td><td class="left">   response chain.  The received-protocol version is appended to the Via</td><td> </td><td class="right">   response chain.  The received-protocol version is appended to the Via</td><td class="lineno" valign="top"></td></tr>
569      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
570      <tr bgcolor="gray" ><td></td><th><a name="part-l16" /><small>skipping to change at</small><em> page 69, line 40</em></th><th> </th><th><a name="part-r16" /><small>skipping to change at</small><em> page 69, line 29</em></th><td></td></tr>
571      <tr><td class="lineno" valign="top"></td><td class="left">                                  technology -- 8-bit single-byte coded</td><td> </td><td class="right">                                  technology -- 8-bit single-byte coded</td><td class="lineno" valign="top"></td></tr>
572      <tr><td class="lineno" valign="top"></td><td class="left">                                  graphic character sets -- Part 1:</td><td> </td><td class="right">                                  graphic character sets -- Part 1:</td><td class="lineno" valign="top"></td></tr>
573      <tr><td class="lineno" valign="top"></td><td class="left">                                  Latin alphabet No. 1", ISO/</td><td> </td><td class="right">                                  Latin alphabet No. 1", ISO/</td><td class="lineno" valign="top"></td></tr>
574      <tr><td class="lineno" valign="top"></td><td class="left">                                  IEC 8859-1:1998, 1998.</td><td> </td><td class="right">                                  IEC 8859-1:1998, 1998.</td><td class="lineno" valign="top"></td></tr>
575      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
576      <tr><td class="lineno" valign="top"></td><td class="left">   [Part2]                        Fielding, R., Ed., Gettys, J., Mogul,</td><td> </td><td class="right">   [Part2]                        Fielding, R., Ed., Gettys, J., Mogul,</td><td class="lineno" valign="top"></td></tr>
577      <tr><td class="lineno" valign="top"></td><td class="left">                                  J., Frystyk, H., Masinter, L., Leach,</td><td> </td><td class="right">                                  J., Frystyk, H., Masinter, L., Leach,</td><td class="lineno" valign="top"></td></tr>
578      <tr><td class="lineno" valign="top"></td><td class="left">                                  P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">                                  P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
579      <tr><td class="lineno" valign="top"></td><td class="left">                                  and J. Reschke, Ed., "HTTP/1.1, part</td><td> </td><td class="right">                                  and J. Reschke, Ed., "HTTP/1.1, part</td><td class="lineno" valign="top"></td></tr>
580      <tr><td class="lineno" valign="top"></td><td class="left">                                  2: Message Semantics",</td><td> </td><td class="right">                                  2: Message Semantics",</td><td class="lineno" valign="top"></td></tr>
581      <tr><td><a name="diff0036" /></td></tr>
582      <tr><td class="lineno" valign="top"></td><td class="lblock">                                  <span class="delete">draft-ietf-httpbis-p2-semantics-13</span></td><td> </td><td class="rblock">                                  <span class="insert">draft-ietf-httpbis-p2-semantics-14</span></td><td class="lineno" valign="top"></td></tr>
583      <tr><td class="lineno" valign="top"></td><td class="lblock">                                  (work in progress), <span class="delete">March</span> 2011.</td><td> </td><td class="rblock">                                  (work in progress), <span class="insert">April</span> 2011.</td><td class="lineno" valign="top"></td></tr>
584      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
585      <tr><td class="lineno" valign="top"></td><td class="left">   [Part3]                        Fielding, R., Ed., Gettys, J., Mogul,</td><td> </td><td class="right">   [Part3]                        Fielding, R., Ed., Gettys, J., Mogul,</td><td class="lineno" valign="top"></td></tr>
586      <tr><td class="lineno" valign="top"></td><td class="left">                                  J., Frystyk, H., Masinter, L., Leach,</td><td> </td><td class="right">                                  J., Frystyk, H., Masinter, L., Leach,</td><td class="lineno" valign="top"></td></tr>
587      <tr><td class="lineno" valign="top"></td><td class="left">                                  P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">                                  P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
588      <tr><td class="lineno" valign="top"></td><td class="left">                                  and J. Reschke, Ed., "HTTP/1.1, part</td><td> </td><td class="right">                                  and J. Reschke, Ed., "HTTP/1.1, part</td><td class="lineno" valign="top"></td></tr>
589      <tr><td class="lineno" valign="top"></td><td class="left">                                  3: Message Payload and Content</td><td> </td><td class="right">                                  3: Message Payload and Content</td><td class="lineno" valign="top"></td></tr>
590      <tr><td class="lineno" valign="top"></td><td class="left">                                  Negotiation",</td><td> </td><td class="right">                                  Negotiation",</td><td class="lineno" valign="top"></td></tr>
591      <tr><td><a name="diff0037" /></td></tr>
592      <tr><td class="lineno" valign="top"></td><td class="lblock">                                  <span class="delete">draft-ietf-httpbis-p3-payload-13</span> (work</td><td> </td><td class="rblock">                                  <span class="insert">draft-ietf-httpbis-p3-payload-14</span> (work</td><td class="lineno" valign="top"></td></tr>
593      <tr><td class="lineno" valign="top"></td><td class="lblock">                                  in progress), <span class="delete">March</span> 2011.</td><td> </td><td class="rblock">                                  in progress), <span class="insert">April</span> 2011.</td><td class="lineno" valign="top"></td></tr>
594      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
595      <tr><td class="lineno" valign="top"></td><td class="left">   [Part6]                        Fielding, R., Ed., Gettys, J., Mogul,</td><td> </td><td class="right">   [Part6]                        Fielding, R., Ed., Gettys, J., Mogul,</td><td class="lineno" valign="top"></td></tr>
596      <tr><td class="lineno" valign="top"></td><td class="left">                                  J., Frystyk, H., Masinter, L., Leach,</td><td> </td><td class="right">                                  J., Frystyk, H., Masinter, L., Leach,</td><td class="lineno" valign="top"></td></tr>
597      <tr><td class="lineno" valign="top"></td><td class="left">                                  P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">                                  P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
598      <tr><td class="lineno" valign="top"></td><td class="left">                                  Nottingham, M., Ed., and J. Reschke,</td><td> </td><td class="right">                                  Nottingham, M., Ed., and J. Reschke,</td><td class="lineno" valign="top"></td></tr>
599      <tr><td class="lineno" valign="top"></td><td class="left">                                  Ed., "HTTP/1.1, part 6: Caching",</td><td> </td><td class="right">                                  Ed., "HTTP/1.1, part 6: Caching",</td><td class="lineno" valign="top"></td></tr>
600      <tr><td><a name="diff0038" /></td></tr>
601      <tr><td class="lineno" valign="top"></td><td class="lblock">                                  <span class="delete">draft-ietf-httpbis-p6-cache-13</span> (work</td><td> </td><td class="rblock">                                  <span class="insert">draft-ietf-httpbis-p6-cache-14</span> (work</td><td class="lineno" valign="top"></td></tr>
602      <tr><td class="lineno" valign="top"></td><td class="lblock">                                  in progress), <span class="delete">March</span> 2011.</td><td> </td><td class="rblock">                                  in progress), <span class="insert">April</span> 2011.</td><td class="lineno" valign="top"></td></tr>
603      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
604      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC1950]                      Deutsch, L. and J-L. Gailly, "ZLIB</td><td> </td><td class="right">   [RFC1950]                      Deutsch, L. and J-L. Gailly, "ZLIB</td><td class="lineno" valign="top"></td></tr>
605      <tr><td class="lineno" valign="top"></td><td class="left">                                  Compressed Data Format Specification</td><td> </td><td class="right">                                  Compressed Data Format Specification</td><td class="lineno" valign="top"></td></tr>
606      <tr><td class="lineno" valign="top"></td><td class="left">                                  version 3.3", RFC 1950, May 1996.</td><td> </td><td class="right">                                  version 3.3", RFC 1950, May 1996.</td><td class="lineno" valign="top"></td></tr>
607      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
608      <tr><td class="lineno" valign="top"></td><td class="left">                                  RFC 1950 is an Informational RFC, thus</td><td> </td><td class="right">                                  RFC 1950 is an Informational RFC, thus</td><td class="lineno" valign="top"></td></tr>
609      <tr><td class="lineno" valign="top"></td><td class="left">                                  it might be less stable than this</td><td> </td><td class="right">                                  it might be less stable than this</td><td class="lineno" valign="top"></td></tr>
610      <tr><td class="lineno" valign="top"></td><td class="left">                                  specification.  On the other hand,</td><td> </td><td class="right">                                  specification.  On the other hand,</td><td class="lineno" valign="top"></td></tr>
611      <tr><td class="lineno" valign="top"></td><td class="left">                                  this downward reference was present</td><td> </td><td class="right">                                  this downward reference was present</td><td class="lineno" valign="top"></td></tr>
612      <tr><td class="lineno" valign="top"></td><td class="left">                                  since the publication of RFC 2068 in</td><td> </td><td class="right">                                  since the publication of RFC 2068 in</td><td class="lineno" valign="top"></td></tr>
613      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
614      <tr bgcolor="gray" ><td></td><th><a name="part-l17" /><small>skipping to change at</small><em> page 77, line 39</em></th><th> </th><th><a name="part-r17" /><small>skipping to change at</small><em> page 77, line 23</em></th><td></td></tr>
615      <tr><td class="lineno" valign="top"></td><td class="left">   Update use of abs_path production from RFC 1808 to the path-absolute</td><td> </td><td class="right">   Update use of abs_path production from RFC 1808 to the path-absolute</td><td class="lineno" valign="top"></td></tr>
616      <tr><td class="lineno" valign="top"></td><td class="left">   + query components of RFC 3986.  State that the asterisk form is</td><td> </td><td class="right">   + query components of RFC 3986.  State that the asterisk form is</td><td class="lineno" valign="top"></td></tr>
617      <tr><td class="lineno" valign="top"></td><td class="left">   allowed for the OPTIONS request method only.  (Section 4.1.2)</td><td> </td><td class="right">   allowed for the OPTIONS request method only.  (Section 4.1.2)</td><td class="lineno" valign="top"></td></tr>
618      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
619      <tr><td class="lineno" valign="top"></td><td class="left">   Clarification that the chunk length does not include the count of the</td><td> </td><td class="right">   Clarification that the chunk length does not include the count of the</td><td class="lineno" valign="top"></td></tr>
620      <tr><td class="lineno" valign="top"></td><td class="left">   octets in the chunk header and trailer.  Furthermore disallowed line</td><td> </td><td class="right">   octets in the chunk header and trailer.  Furthermore disallowed line</td><td class="lineno" valign="top"></td></tr>
621      <tr><td class="lineno" valign="top"></td><td class="left">   folding in chunk extensions.  (Section 6.2.1)</td><td> </td><td class="right">   folding in chunk extensions.  (Section 6.2.1)</td><td class="lineno" valign="top"></td></tr>
622      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
623      <tr><td class="lineno" valign="top"></td><td class="left">   Remove hard limit of two connections per server.  (Section 7.1.4)</td><td> </td><td class="right">   Remove hard limit of two connections per server.  (Section 7.1.4)</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><a name="diff0039" /></td></tr>
626      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">Change ABNF productions for header fields to only define the field</span></td><td class="lineno" valign="top"></td></tr>
627      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   value.  (Section 9)</span></td><td class="lineno" valign="top"></td></tr>
628      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
629      <tr><td class="lineno" valign="top"></td><td class="left">   Clarify exactly when close connection options must be sent.</td><td> </td><td class="right">   Clarify exactly when close connection options must be sent.</td><td class="lineno" valign="top"></td></tr>
630      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 9.1)</td><td> </td><td class="right">   (Section 9.1)</td><td class="lineno" valign="top"></td></tr>
631      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
632      <tr><td class="lineno" valign="top"></td><td class="left">   Define the semantics of the "Upgrade" header field in responses other</td><td> </td><td class="right">   Define the semantics of the "Upgrade" header field in responses other</td><td class="lineno" valign="top"></td></tr>
633      <tr><td class="lineno" valign="top"></td><td class="left">   than 101 (this was incorporated from [RFC2817]).  (Section 9.8)</td><td> </td><td class="right">   than 101 (this was incorporated from [RFC2817]).  (Section 9.8)</td><td class="lineno" valign="top"></td></tr>
634      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
635      <tr><td class="lineno" valign="top"></td><td class="left">Appendix C.  Collected ABNF</td><td> </td><td class="right">Appendix C.  Collected ABNF</td><td class="lineno" valign="top"></td></tr>
636      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
637      <tr><td class="lineno" valign="top"></td><td class="left">   BWS = OWS</td><td> </td><td class="right">   BWS = OWS</td><td class="lineno" valign="top"></td></tr>
638      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
639      <tr><td class="lineno" valign="top"></td><td class="left">   Chunked-Body = *chunk last-chunk trailer-part CRLF</td><td> </td><td class="right">   Chunked-Body = *chunk last-chunk trailer-part CRLF</td><td class="lineno" valign="top"></td></tr>
640      <tr><td><a name="diff0040" /></td></tr>
641      <tr><td class="lineno" valign="top"></td><td class="lblock">   Connection = <span class="delete">"Connection:" OWS Connection-v</span></td><td> </td><td class="rblock">   Connection = *( "," OWS ) connection-token *( OWS "," [ OWS</td><td class="lineno" valign="top"></td></tr>
642      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Connection-v =</span> *( "," OWS ) connection-token *( OWS "," [ OWS</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
643      <tr><td class="lineno" valign="top"></td><td class="left">    connection-token ] )</td><td> </td><td class="right">    connection-token ] )</td><td class="lineno" valign="top"></td></tr>
644      <tr><td><a name="diff0041" /></td></tr>
645      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Content-Length = 1*DIGIT</span></td><td class="lineno" valign="top"></td></tr>
646      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
647      <tr><td><a name="diff0042" /></td></tr>
648      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Content-Length = "Content-Length:" OWS 1*Content-Length-v</span></td><td> </td><td class="rblock">   Date = HTTP-date</td><td class="lineno" valign="top"></td></tr>
649      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Content-Length-v = 1*DIGIT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
650      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
651      <tr><td class="lineno" valign="top"></td><td class="lblock">   Date <span class="delete">= "Date:" OWS Date-v</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
652      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Date-v</span> = HTTP-date</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
653      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
654      <tr><td class="lineno" valign="top"></td><td class="left">   GMT = %x47.4D.54 ; GMT</td><td> </td><td class="right">   GMT = %x47.4D.54 ; GMT</td><td class="lineno" valign="top"></td></tr>
655      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
656      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP-Prot-Name = %x48.54.54.50 ; HTTP</td><td> </td><td class="right">   HTTP-Prot-Name = %x48.54.54.50 ; HTTP</td><td class="lineno" valign="top"></td></tr>
657      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP-Version = HTTP-Prot-Name "/" 1*DIGIT "." 1*DIGIT</td><td> </td><td class="right">   HTTP-Version = HTTP-Prot-Name "/" 1*DIGIT "." 1*DIGIT</td><td class="lineno" valign="top"></td></tr>
658      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP-date = rfc1123-date / obs-date</td><td> </td><td class="right">   HTTP-date = rfc1123-date / obs-date</td><td class="lineno" valign="top"></td></tr>
659      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP-message = start-line *( header-field CRLF ) CRLF [ message-body</td><td> </td><td class="right">   HTTP-message = start-line *( header-field CRLF ) CRLF [ message-body</td><td class="lineno" valign="top"></td></tr>
660      <tr><td class="lineno" valign="top"></td><td class="left">    ]</td><td> </td><td class="right">    ]</td><td class="lineno" valign="top"></td></tr>
661      <tr><td><a name="diff0043" /></td></tr>
662      <tr><td class="lineno" valign="top"></td><td class="lblock">   Host = <span class="delete">"Host:" OWS Host-v</span></td><td> </td><td class="rblock">   Host = uri-host [ ":" port ]</td><td class="lineno" valign="top"></td></tr>
663      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Host-v =</span> uri-host [ ":" port ]</td><td> </td><td class="rblock"></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">   Method = token</td><td> </td><td class="right">   Method = token</td><td class="lineno" valign="top"></td></tr>
666      <tr><td><a name="diff0044" /></td></tr>
667      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
668      <tr><td class="lineno" valign="top"></td><td class="left">   OWS = *( [ obs-fold ] WSP )</td><td> </td><td class="right">   OWS = *( [ obs-fold ] WSP )</td><td class="lineno" valign="top"></td></tr>
669      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
670      <tr><td class="lineno" valign="top"></td><td class="left">   RWS = 1*( [ obs-fold ] WSP )</td><td> </td><td class="right">   RWS = 1*( [ obs-fold ] WSP )</td><td class="lineno" valign="top"></td></tr>
671      <tr><td class="lineno" valign="top"></td><td class="left">   Reason-Phrase = *( WSP / VCHAR / obs-text )</td><td> </td><td class="right">   Reason-Phrase = *( WSP / VCHAR / obs-text )</td><td class="lineno" valign="top"></td></tr>
672      <tr><td class="lineno" valign="top"></td><td class="left">   Request = Request-Line *( header-field CRLF ) CRLF [ message-body ]</td><td> </td><td class="right">   Request = Request-Line *( header-field CRLF ) CRLF [ message-body ]</td><td class="lineno" valign="top"></td></tr>
673      <tr><td class="lineno" valign="top"></td><td class="left">   Request-Line = Method SP request-target SP HTTP-Version CRLF</td><td> </td><td class="right">   Request-Line = Method SP request-target SP HTTP-Version CRLF</td><td class="lineno" valign="top"></td></tr>
674      <tr><td class="lineno" valign="top"></td><td class="left">   Response = Status-Line *( header-field CRLF ) CRLF [ message-body ]</td><td> </td><td class="right">   Response = Status-Line *( header-field CRLF ) CRLF [ message-body ]</td><td class="lineno" valign="top"></td></tr>
675      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
676      <tr><td class="lineno" valign="top"></td><td class="left">   Status-Code = 3DIGIT</td><td> </td><td class="right">   Status-Code = 3DIGIT</td><td class="lineno" valign="top"></td></tr>
677      <tr><td class="lineno" valign="top"></td><td class="left">   Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF</td><td> </td><td class="right">   Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF</td><td class="lineno" valign="top"></td></tr>
678      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
679      <tr bgcolor="gray" ><td></td><th><a name="part-l18" /><small>skipping to change at</small><em> page 78, line 34</em></th><th> </th><th><a name="part-r18" /><small>skipping to change at</small><em> page 78, line 15</em></th><td></td></tr>
680      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
681      <tr><td class="lineno" valign="top"></td><td class="left">   RWS = 1*( [ obs-fold ] WSP )</td><td> </td><td class="right">   RWS = 1*( [ obs-fold ] WSP )</td><td class="lineno" valign="top"></td></tr>
682      <tr><td class="lineno" valign="top"></td><td class="left">   Reason-Phrase = *( WSP / VCHAR / obs-text )</td><td> </td><td class="right">   Reason-Phrase = *( WSP / VCHAR / obs-text )</td><td class="lineno" valign="top"></td></tr>
683      <tr><td class="lineno" valign="top"></td><td class="left">   Request = Request-Line *( header-field CRLF ) CRLF [ message-body ]</td><td> </td><td class="right">   Request = Request-Line *( header-field CRLF ) CRLF [ message-body ]</td><td class="lineno" valign="top"></td></tr>
684      <tr><td class="lineno" valign="top"></td><td class="left">   Request-Line = Method SP request-target SP HTTP-Version CRLF</td><td> </td><td class="right">   Request-Line = Method SP request-target SP HTTP-Version CRLF</td><td class="lineno" valign="top"></td></tr>
685      <tr><td class="lineno" valign="top"></td><td class="left">   Response = Status-Line *( header-field CRLF ) CRLF [ message-body ]</td><td> </td><td class="right">   Response = Status-Line *( header-field CRLF ) CRLF [ message-body ]</td><td class="lineno" valign="top"></td></tr>
686      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
687      <tr><td class="lineno" valign="top"></td><td class="left">   Status-Code = 3DIGIT</td><td> </td><td class="right">   Status-Code = 3DIGIT</td><td class="lineno" valign="top"></td></tr>
688      <tr><td class="lineno" valign="top"></td><td class="left">   Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF</td><td> </td><td class="right">   Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF</td><td class="lineno" valign="top"></td></tr>
689      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
690      <tr><td><a name="diff0045" /></td></tr>
691      <tr><td class="lineno" valign="top"></td><td class="lblock">   TE = <span class="delete">"TE:" OWS TE-v</span></td><td> </td><td class="rblock">   TE = [ ( "," / t-codings ) *( OWS "," [ OWS t-codings ] ) ]</td><td class="lineno" valign="top"></td></tr>
692      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   TE-v =</span> [ ( "," / t-codings ) *( OWS "," [ OWS t-codings ] ) ]</td><td> </td><td class="rblock">   Trailer = *( "," OWS ) field-name *( OWS "," [ OWS field-name ] )</td><td class="lineno" valign="top"></td></tr>
693      <tr><td class="lineno" valign="top"></td><td class="lblock">   Trailer = <span class="delete">"Trailer:" OWS Trailer-v</span></td><td> </td><td class="rblock">   Transfer-Encoding = *( "," OWS ) transfer-coding *( OWS "," [ OWS</td><td class="lineno" valign="top"></td></tr>
694      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Trailer-v =</span> *( "," OWS ) field-name *( OWS "," [ OWS field-name ] )</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
695      <tr><td class="lineno" valign="top"></td><td class="lblock">   Transfer-Encoding <span class="delete">= "Transfer-Encoding:" OWS Transfer-Encoding-v</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
696      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Transfer-Encoding-v</span> = *( "," OWS ) transfer-coding *( OWS "," [ OWS</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
697      <tr><td class="lineno" valign="top"></td><td class="left">    transfer-coding ] )</td><td> </td><td class="right">    transfer-coding ] )</td><td class="lineno" valign="top"></td></tr>
698      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
699      <tr><td class="lineno" valign="top"></td><td class="left">   URI-reference = &lt;URI-reference, defined in [RFC3986], Section 4.1&gt;</td><td> </td><td class="right">   URI-reference = &lt;URI-reference, defined in [RFC3986], Section 4.1&gt;</td><td class="lineno" valign="top"></td></tr>
700      <tr><td><a name="diff0046" /></td></tr>
701      <tr><td class="lineno" valign="top"></td><td class="lblock">   Upgrade = <span class="delete">"Upgrade:" OWS Upgrade-v</span></td><td> </td><td class="rblock">   Upgrade = *( "," OWS ) product *( OWS "," [ OWS product ] )</td><td class="lineno" valign="top"></td></tr>
702      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Upgrade-v =</span> *( "," OWS ) product *( OWS "," [ OWS product ] )</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
703      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
704      <tr><td><a name="diff0047" /></td></tr>
705      <tr><td class="lineno" valign="top"></td><td class="lblock">   Via = <span class="delete">"Via:" OWS Via-v</span></td><td> </td><td class="rblock">   Via = *( "," OWS ) received-protocol RWS received-by [ RWS comment ]</td><td class="lineno" valign="top"></td></tr>
706      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Via-v =</span> *( "," OWS ) received-protocol RWS received-by [ RWS comment</td><td> </td><td class="rblock">    *( OWS "," [ OWS received-protocol RWS received-by [ RWS comment ] ]</td><td class="lineno" valign="top"></td></tr>
707      <tr><td class="lineno" valign="top"></td><td class="lblock">    ] *( OWS "," [ OWS received-protocol RWS received-by [ RWS comment ]</td><td> </td><td class="rblock">    )</td><td class="lineno" valign="top"></td></tr>
708      <tr><td class="lineno" valign="top"></td><td class="lblock">    ] )</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
709      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
710      <tr><td class="lineno" valign="top"></td><td class="left">   absolute-URI = &lt;absolute-URI, defined in [RFC3986], Section 4.3&gt;</td><td> </td><td class="right">   absolute-URI = &lt;absolute-URI, defined in [RFC3986], Section 4.3&gt;</td><td class="lineno" valign="top"></td></tr>
711      <tr><td class="lineno" valign="top"></td><td class="left">   asctime-date = day-name SP date3 SP time-of-day SP year</td><td> </td><td class="right">   asctime-date = day-name SP date3 SP time-of-day SP year</td><td class="lineno" valign="top"></td></tr>
712      <tr><td class="lineno" valign="top"></td><td class="left">   attribute = token</td><td> </td><td class="right">   attribute = token</td><td class="lineno" valign="top"></td></tr>
713      <tr><td class="lineno" valign="top"></td><td class="left">   authority = &lt;authority, defined in [RFC3986], Section 3.2&gt;</td><td> </td><td class="right">   authority = &lt;authority, defined in [RFC3986], Section 3.2&gt;</td><td class="lineno" valign="top"></td></tr>
714      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
715      <tr><td class="lineno" valign="top"></td><td class="left">   chunk = chunk-size *WSP [ chunk-ext ] CRLF chunk-data CRLF</td><td> </td><td class="right">   chunk = chunk-size *WSP [ chunk-ext ] CRLF chunk-data CRLF</td><td class="lineno" valign="top"></td></tr>
716      <tr><td class="lineno" valign="top"></td><td class="left">   chunk-data = 1*OCTET</td><td> </td><td class="right">   chunk-data = 1*OCTET</td><td class="lineno" valign="top"></td></tr>
717      <tr><td class="lineno" valign="top"></td><td class="left">   chunk-ext = *( ";" *WSP chunk-ext-name [ "=" chunk-ext-val ] *WSP )</td><td> </td><td class="right">   chunk-ext = *( ";" *WSP chunk-ext-name [ "=" chunk-ext-val ] *WSP )</td><td class="lineno" valign="top"></td></tr>
718      <tr><td class="lineno" valign="top"></td><td class="left">   chunk-ext-name = token</td><td> </td><td class="right">   chunk-ext-name = token</td><td class="lineno" valign="top"></td></tr>
719      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
720      <tr bgcolor="gray" ><td></td><th><a name="part-l19" /><small>skipping to change at</small><em> page 90, line 36</em></th><th> </th><th><a name="part-r19" /><small>skipping to change at</small><em> page 90, line 14</em></th><td></td></tr>
721      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
722      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/240&gt;: "Migrate</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/240&gt;: "Migrate</td><td class="lineno" valign="top"></td></tr>
723      <tr><td class="lineno" valign="top"></td><td class="left">      Upgrade details from RFC2817"</td><td> </td><td class="right">      Upgrade details from RFC2817"</td><td class="lineno" valign="top"></td></tr>
724      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
725      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/276&gt;: "untangle</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/276&gt;: "untangle</td><td class="lineno" valign="top"></td></tr>
726      <tr><td class="lineno" valign="top"></td><td class="left">      ABNFs for header fields"</td><td> </td><td class="right">      ABNFs for header fields"</td><td class="lineno" valign="top"></td></tr>
727      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
728      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/279&gt;: "update RFC</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/279&gt;: "update RFC</td><td class="lineno" valign="top"></td></tr>
729      <tr><td class="lineno" valign="top"></td><td class="left">      2109 reference"</td><td> </td><td class="right">      2109 reference"</td><td class="lineno" valign="top"></td></tr>
730      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
731      <tr><td><a name="diff0048" /></td></tr>
732      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">D.15.  Since draft-ietf-httpbis-p1-messaging-13</span></td><td class="lineno" valign="top"></td></tr>
733      <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>
734      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Closed issues:</span></td><td class="lineno" valign="top"></td></tr>
735      <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>
736      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/53&gt;: "Allow is not</span></td><td class="lineno" valign="top"></td></tr>
737      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      in 13.5.2"</span></td><td class="lineno" valign="top"></td></tr>
738      <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>
739      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/276&gt;: "untangle</span></td><td class="lineno" valign="top"></td></tr>
740      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      ABNFs for header fields"</span></td><td class="lineno" valign="top"></td></tr>
741      <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>
742      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/286&gt;: "Content-</span></td><td class="lineno" valign="top"></td></tr>
743      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      Length ABNF broken"</span></td><td class="lineno" valign="top"></td></tr>
744      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
745      <tr><td class="lineno" valign="top"></td><td class="left">Index</td><td> </td><td class="right">Index</td><td class="lineno" valign="top"></td></tr>
746      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
747      <tr><td class="lineno" valign="top"></td><td class="left">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
748      <tr><td class="lineno" valign="top"></td><td class="left">      absolute-URI form (of request-target)  29</td><td> </td><td class="right">      absolute-URI form (of request-target)  29</td><td class="lineno" valign="top"></td></tr>
749      <tr><td class="lineno" valign="top"></td><td class="left">      accelerator  13</td><td> </td><td class="right">      accelerator  13</td><td class="lineno" valign="top"></td></tr>
750      <tr><td><a name="diff0049" /></td></tr>
751      <tr><td class="lineno" valign="top"></td><td class="lblock">      application/http Media Type  6<span class="delete">4</span></td><td> </td><td class="rblock">      application/http Media Type  6<span class="insert">3</span></td><td class="lineno" valign="top"></td></tr>
752      <tr><td class="lineno" valign="top"></td><td class="left">      asterisk form (of request-target)  28</td><td> </td><td class="right">      asterisk form (of request-target)  28</td><td class="lineno" valign="top"></td></tr>
753      <tr><td class="lineno" valign="top"></td><td class="left">      authority form (of request-target)  29</td><td> </td><td class="right">      authority form (of request-target)  29</td><td class="lineno" valign="top"></td></tr>
754      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
755      <tr><td class="lineno" valign="top"></td><td class="left">   B</td><td> </td><td class="right">   B</td><td class="lineno" valign=