source: draft-ietf-httpbis/diffs/draft-ietf-httpbis-p3-payload-09-from-8.diff.html @ 841

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36<body > 
37  <table border="0" cellpadding="0" cellspacing="0"> 
38  <tr bgcolor="orange"><th></th><th>&nbsp;draft-ietf-httpbis-p3-payload-08.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p3-payload-09.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                                              Day Software</td><td> </td><td class="right">Internet-Draft                                              Day Software</td><td class="lineno" valign="top"></td></tr>
42      <tr><td class="lineno" valign="top"></td><td class="left">Obsoletes: 2616 (if approved)                                  J. Gettys</td><td> </td><td class="right">Obsoletes: 2616 (if approved)                                  J. Gettys</td><td class="lineno" valign="top"></td></tr>
43      <tr><td class="lineno" valign="top"></td><td class="left">Intended status: Standards Track                    One Laptop per Child</td><td> </td><td class="right">Intended status: Standards Track                    One Laptop per Child</td><td class="lineno" valign="top"></td></tr>
44      <tr><td><a name="diff0001" /></td></tr>
45      <tr><td class="lineno" valign="top"></td><td class="lblock">Expires: <span class="delete">April 29, 2010   </span>                                      J. Mogul</td><td> </td><td class="rblock">Expires: <span class="insert">September 9, 2010</span>                                      J. Mogul</td><td class="lineno" valign="top"></td></tr>
46      <tr><td class="lineno" valign="top"></td><td class="left">                                                                      HP</td><td> </td><td class="right">                                                                      HP</td><td class="lineno" valign="top"></td></tr>
47      <tr><td class="lineno" valign="top"></td><td class="left">                                                              H. Frystyk</td><td> </td><td class="right">                                                              H. Frystyk</td><td class="lineno" valign="top"></td></tr>
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 Systems</td><td> </td><td class="right">                                                           Adobe Systems</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">October 26, 2009</span></td><td> </td><td class="rblock">                                                        <span class="insert">   March 8, 2010</span></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 3: Message Payload and Content Negotiation</td><td> </td><td class="right">       HTTP/1.1, part 3: Message Payload and Content Negotiation</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">                    <span class="delete">draft-ietf-httpbis-p3-payload-08</span></td><td> </td><td class="rblock">                    <span class="insert">draft-ietf-httpbis-p3-payload-09</span></td><td class="lineno" valign="top"></td></tr>
65      <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>
66      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">Abstract</span></td><td class="lineno" valign="top"></td></tr>
67      <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>
68      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   The Hypertext Transfer Protocol (HTTP) is an application-level</span></td><td class="lineno" valign="top"></td></tr>
69      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   protocol for distributed, collaborative, hypermedia information</span></td><td class="lineno" valign="top"></td></tr>
70      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   systems.  HTTP has been in use by the World Wide Web global</span></td><td class="lineno" valign="top"></td></tr>
71      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   information initiative since 1990.  This document is Part 3 of the</span></td><td class="lineno" valign="top"></td></tr>
72      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   seven-part specification that defines the protocol referred to as</span></td><td class="lineno" valign="top"></td></tr>
73      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   "HTTP/1.1" and, taken together, obsoletes RFC 2616.  Part 3 defines</span></td><td class="lineno" valign="top"></td></tr>
74      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   HTTP message content, metadata, and content negotiation.</span></td><td class="lineno" valign="top"></td></tr>
75      <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>
76      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">Editorial Note (To be removed by RFC Editor)</span></td><td class="lineno" valign="top"></td></tr>
77      <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>
78      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Discussion of this draft should take place on the HTTPBIS working</span></td><td class="lineno" valign="top"></td></tr>
79      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   group mailing list (ietf-http-wg@w3.org).  The current issues list is</span></td><td class="lineno" valign="top"></td></tr>
80      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   at &lt;http://tools.ietf.org/wg/httpbis/trac/report/11&gt; and related</span></td><td class="lineno" valign="top"></td></tr>
81      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   documents (including fancy diffs) can be found at</span></td><td class="lineno" valign="top"></td></tr>
82      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</span></td><td class="lineno" valign="top"></td></tr>
83      <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>
84      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   The changes in this draft are summarized in Appendix E.10.</span></td><td class="lineno" valign="top"></td></tr>
85      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
86      <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>
87      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
88      <tr><td class="lineno" valign="top"></td><td class="left">   This Internet-Draft is submitted to IETF in full conformance with the</td><td> </td><td class="right">   This Internet-Draft is submitted to IETF in full conformance with the</td><td class="lineno" valign="top"></td></tr>
89      <tr><td><a name="diff0004" /></td></tr>
90      <tr><td class="lineno" valign="top"></td><td class="lblock">   provisions of BCP 78 and BCP 79.  <span class="delete">This document may contain material</span></td><td> </td><td class="rblock">   provisions of BCP 78 and BCP 79.</td><td class="lineno" valign="top"></td></tr>
91      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   from IETF Documents or IETF Contributions published or made publicly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
92      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   available before November 10, 2008.  The person(s) controlling the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
93      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   copyright in some of this material may not have granted the IETF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
94      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Trust the right to allow modifications of such material outside the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
95      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   IETF Standards Process.  Without obtaining an adequate license from</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
96      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the person(s) controlling the copyright in such materials, this</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
97      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   document may not be modified outside the IETF Standards Process, and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
98      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   derivative works of it may not be created outside the IETF Standards</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
99      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Process, except to format it for publication as an RFC or to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
100      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   translate it into languages other than English.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
101      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
102      <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>
103      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF), its areas, and its working groups.  Note that</td><td> </td><td class="right">   Task Force (IETF), its areas, and its working groups.  Note that</td><td class="lineno" valign="top"></td></tr>
104      <tr><td class="lineno" valign="top"></td><td class="left">   other groups may also distribute working documents as Internet-</td><td> </td><td class="right">   other groups may also distribute working documents as Internet-</td><td class="lineno" valign="top"></td></tr>
105      <tr><td class="lineno" valign="top"></td><td class="left">   Drafts.</td><td> </td><td class="right">   Drafts.</td><td class="lineno" valign="top"></td></tr>
106      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
107      <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>
108      <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>
109      <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>
110      <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>
111      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
112      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 2, line 4</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 2, line 14</em></th><td></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 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>
115      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF), its areas, and its working groups.  Note that</td><td> </td><td class="right">   Task Force (IETF), its areas, and its working groups.  Note that</td><td class="lineno" valign="top"></td></tr>
116      <tr><td class="lineno" valign="top"></td><td class="left">   other groups may also distribute working documents as Internet-</td><td> </td><td class="right">   other groups may also distribute working documents as Internet-</td><td class="lineno" valign="top"></td></tr>
117      <tr><td class="lineno" valign="top"></td><td class="left">   Drafts.</td><td> </td><td class="right">   Drafts.</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 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>
120      <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>
121      <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>
122      <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>
123      <tr><td><a name="diff0005" /></td></tr>
124      <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>
125      <tr><td class="lineno" valign="top"></td><td class="left">   The list of current Internet-Drafts can be accessed at</td><td> </td><td class="right">   The list of current Internet-Drafts can be accessed at</td><td class="lineno" valign="top"></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="left">   http://www.ietf.org/ietf/1id-abstracts.txt.</td><td> </td><td class="right">   http://www.ietf.org/ietf/1id-abstracts.txt.</td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="left">   The list of Internet-Draft Shadow Directories can be accessed at</td><td> </td><td class="right">   The list of Internet-Draft Shadow Directories can be accessed at</td><td class="lineno" valign="top"></td></tr>
129      <tr><td class="lineno" valign="top"></td><td class="left">   http://www.ietf.org/shadow.html.</td><td> </td><td class="right">   http://www.ietf.org/shadow.html.</td><td class="lineno" valign="top"></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
131      <tr><td><a name="diff0006" /></td></tr>
132      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">April 2</span>9, 2010.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">September </span>9, 2010.</td><td class="lineno" valign="top"></td></tr>
133      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
134      <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>
135      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
136      <tr><td><a name="diff0007" /></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="lblock">   Copyright (c) 20<span class="delete">09</span> IETF Trust and the persons identified as the</td><td> </td><td class="rblock">   Copyright (c) 20<span class="insert">10</span> IETF Trust and the persons identified as the</td><td class="lineno" valign="top"></td></tr>
138      <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>
139      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
140      <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>
141      <tr><td><a name="diff0008" /></td></tr>
142      <tr><td class="lineno" valign="top"></td><td class="lblock">   Provisions Relating to IETF Documents in effect on the date of</td><td> </td><td class="rblock">   Provisions Relating to IETF Documents</td><td class="lineno" valign="top"></td></tr>
143      <tr><td class="lineno" valign="top"></td><td class="lblock">   publication of this <span class="delete">document (http://trustee.ietf.org/license-info).</span></td><td> </td><td class="rblock">   <span class="insert">(http://trustee.ietf.org/license-info)</span> in effect on the date of</td><td class="lineno" valign="top"></td></tr>
144      <tr><td class="lineno" valign="top"></td><td class="lblock">   Please review these documents carefully, as they describe your rights</td><td> </td><td class="rblock">   publication of this <span class="insert">document.</span>  Please review these documents</td><td class="lineno" valign="top"></td></tr>
145      <tr><td class="lineno" valign="top"></td><td class="lblock">   and restrictions with respect to this document.</td><td> </td><td class="rblock">   carefully, as they describe your rights and restrictions with respect</td><td class="lineno" valign="top"></td></tr>
146      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock">   to this document.  <span class="insert">Code Components extracted from this</span> document <span class="insert">must</span></td><td class="lineno" valign="top"></td></tr>
147      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">Abstract</span></td><td> </td><td class="rblock"><span class="insert">   include Simplified BSD License text</span> as <span class="insert">described in Section 4.e</span> of</td><td class="lineno" valign="top"></td></tr>
148      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock">   the <span class="insert">Trust Legal Provisions</span> and <span class="insert">are provided without warranty as</span></td><td class="lineno" valign="top"></td></tr>
149      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Hypertext Transfer Protocol (HTTP) is an application-level</span></td><td> </td><td class="rblock"><span class="insert">   described in the BSD License.</span></td><td class="lineno" valign="top"></td></tr>
150      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   protocol for distributed, collaborative, hypermedia information</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
151      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   systems.  HTTP has been in use by the World Wide Web global</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
152      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   information initiative since 1990.  This</span> document <span class="delete">is Part 3 of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
153      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   seven-part specification that defines the protocol referred to</span> as</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
154      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">"HTTP/1.1" and, taken together, obsoletes RFC 2616.  Part 3 defines</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
155      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP message content, metadata, and content negotiation.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
156      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
157      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">Editorial Note (To be removed by RFC Editor)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
158      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
159      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Discussion</span> of <span class="delete">this draft should take place on</span> the <span class="delete">HTTPBIS working</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
160      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   group mailing list (ietf-http-wg@w3.org).  The current issues list is</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
161      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   at &lt;http://tools.ietf.org/wg/httpbis/trac/report/11&gt;</span> and <span class="delete">related</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
162      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   documents (including fancy diffs) can be found at</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
164      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
165      <tr><td><a name="diff0009" /></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="lblock">   The <span class="delete">changes</span> in this <span class="delete">draft are summarized</span> in <span class="delete">Appendix E.9.</span></td><td> </td><td class="rblock">   <span class="insert">This document may contain material from IETF Documents or IETF</span></td><td class="lineno" valign="top"></td></tr>
167      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Contributions published or made publicly available before November</span></td><td class="lineno" valign="top"></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   10, 2008.</span>  The <span class="insert">person(s) controlling the copyright</span> in <span class="insert">some of</span> this</td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">material may not have granted the IETF Trust the right to allow</span></td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   modifications of such material outside the IETF Standards Process.</span></td><td class="lineno" valign="top"></td></tr>
171      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Without obtaining an adequate license from the person(s) controlling</span></td><td class="lineno" valign="top"></td></tr>
172      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   the copyright</span> in <span class="insert">such materials, this document may not be modified</span></td><td class="lineno" valign="top"></td></tr>
173      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   outside the IETF Standards Process, and derivative works of it may</span></td><td class="lineno" valign="top"></td></tr>
174      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   not be created outside the IETF Standards Process, except to format</span></td><td class="lineno" valign="top"></td></tr>
175      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   it for publication as an RFC or to translate it into languages other</span></td><td class="lineno" valign="top"></td></tr>
176      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   than English.</span></td><td class="lineno" valign="top"></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
178      <tr><td class="lineno" valign="top"></td><td class="left">Table of Contents</td><td> </td><td class="right">Table of Contents</td><td class="lineno" valign="top"></td></tr>
179      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
180      <tr><td class="lineno" valign="top"></td><td class="left">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5</td><td> </td><td class="right">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5</td><td class="lineno" valign="top"></td></tr>
181      <tr><td class="lineno" valign="top"></td><td class="left">     1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5</td><td> </td><td class="right">     1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5</td><td class="lineno" valign="top"></td></tr>
182      <tr><td class="lineno" valign="top"></td><td class="left">     1.2.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">     1.2.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
183      <tr><td class="lineno" valign="top"></td><td class="left">     1.3.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">     1.3.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
184      <tr><td class="lineno" valign="top"></td><td class="left">       1.3.1.  Core Rules . . . . . . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">       1.3.1.  Core Rules . . . . . . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
185      <tr><td class="lineno" valign="top"></td><td class="left">       1.3.2.  ABNF Rules defined in other Parts of the</td><td> </td><td class="right">       1.3.2.  ABNF Rules defined in other Parts of the</td><td class="lineno" valign="top"></td></tr>
186      <tr><td class="lineno" valign="top"></td><td class="left">               Specification  . . . . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">               Specification  . . . . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
187      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
188      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 3, line 30</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 3, line 30</em></th><td></td></tr>
189      <tr><td class="lineno" valign="top"></td><td class="left">       2.3.1.  Canonicalization and Text Defaults . . . . . . . . . . 10</td><td> </td><td class="right">       2.3.1.  Canonicalization and Text Defaults . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
190      <tr><td class="lineno" valign="top"></td><td class="left">       2.3.2.  Multipart Types  . . . . . . . . . . . . . . . . . . . 11</td><td> </td><td class="right">       2.3.2.  Multipart Types  . . . . . . . . . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
191      <tr><td class="lineno" valign="top"></td><td class="left">     2.4.  Language Tags  . . . . . . . . . . . . . . . . . . . . . . 11</td><td> </td><td class="right">     2.4.  Language Tags  . . . . . . . . . . . . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
192      <tr><td class="lineno" valign="top"></td><td class="left">   3.  Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12</td><td> </td><td class="right">   3.  Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
193      <tr><td class="lineno" valign="top"></td><td class="left">     3.1.  Entity Header Fields . . . . . . . . . . . . . . . . . . . 12</td><td> </td><td class="right">     3.1.  Entity Header Fields . . . . . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
194      <tr><td class="lineno" valign="top"></td><td class="left">     3.2.  Entity Body  . . . . . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="right">     3.2.  Entity Body  . . . . . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
195      <tr><td class="lineno" valign="top"></td><td class="left">       3.2.1.  Type . . . . . . . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="right">       3.2.1.  Type . . . . . . . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
196      <tr><td class="lineno" valign="top"></td><td class="left">       3.2.2.  Entity Length  . . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="right">       3.2.2.  Entity Length  . . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="left">   4.  Content Negotiation  . . . . . . . . . . . . . . . . . . . . . 14</td><td> </td><td class="right">   4.  Content Negotiation  . . . . . . . . . . . . . . . . . . . . . 14</td><td class="lineno" valign="top"></td></tr>
198      <tr><td class="lineno" valign="top"></td><td class="left">     4.1.  Server-driven Negotiation  . . . . . . . . . . . . . . . . 14</td><td> </td><td class="right">     4.1.  Server-driven Negotiation  . . . . . . . . . . . . . . . . 14</td><td class="lineno" valign="top"></td></tr>
199      <tr><td><a name="diff0010" /></td></tr>
200      <tr><td class="lineno" valign="top"></td><td class="lblock">     4.2.  Agent-driven Negotiation . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock">     4.2.  Agent-driven Negotiation . . . . . . . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     4.3.  Transparent Negotiation  . . . . . . . . . . . . . . . . .</span> 16</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="left">   5.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 16</td><td> </td><td class="right">   5.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
203      <tr><td><a name="diff0011" /></td></tr>
204      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.1.  Accept . . . . . . . . . . . . . . . . . . . . . . . . . . 1<span class="delete">7</span></td><td> </td><td class="rblock">     5.1.  Accept . . . . . . . . . . . . . . . . . . . . . . . . . . 1<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="left">     5.2.  Accept-Charset . . . . . . . . . . . . . . . . . . . . . . 19</td><td> </td><td class="right">     5.2.  Accept-Charset . . . . . . . . . . . . . . . . . . . . . . 19</td><td class="lineno" valign="top"></td></tr>
206      <tr><td><a name="diff0012" /></td></tr>
207      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.3.  Accept-Encoding  . . . . . . . . . . . . . . . . . . . . . <span class="delete">20</span></td><td> </td><td class="rblock">     5.3.  Accept-Encoding  . . . . . . . . . . . . . . . . . . . . . <span class="insert">19</span></td><td class="lineno" valign="top"></td></tr>
208      <tr><td class="lineno" valign="top"></td><td class="left">     5.4.  Accept-Language  . . . . . . . . . . . . . . . . . . . . . 21</td><td> </td><td class="right">     5.4.  Accept-Language  . . . . . . . . . . . . . . . . . . . . . 21</td><td class="lineno" valign="top"></td></tr>
209      <tr><td><a name="diff0013" /></td></tr>
210      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.5.  Content-Encoding . . . . . . . . . . . . . . . . . . . . . 2<span class="delete">3</span></td><td> </td><td class="rblock">     5.5.  Content-Encoding . . . . . . . . . . . . . . . . . . . . . 2<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
211      <tr><td class="lineno" valign="top"></td><td class="left">     5.6.  Content-Language . . . . . . . . . . . . . . . . . . . . . 23</td><td> </td><td class="right">     5.6.  Content-Language . . . . . . . . . . . . . . . . . . . . . 23</td><td class="lineno" valign="top"></td></tr>
212      <tr><td><a name="diff0014" /></td></tr>
213      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.7.  Content-Location . . . . . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">     5.7.  Content-Location . . . . . . . . . . . . . . . . . . . . . <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
214      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.8.  Content-MD5  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">25</span></td><td> </td><td class="rblock">     5.8.  Content-MD5  . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">24</span></td><td class="lineno" valign="top"></td></tr>
215      <tr><td class="lineno" valign="top"></td><td class="left">     5.9.  Content-Type . . . . . . . . . . . . . . . . . . . . . . . 26</td><td> </td><td class="right">     5.9.  Content-Type . . . . . . . . . . . . . . . . . . . . . . . 26</td><td class="lineno" valign="top"></td></tr>
216      <tr><td><a name="diff0015" /></td></tr>
217      <tr><td class="lineno" valign="top"></td><td class="lblock">   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="insert">26</span></td><td class="lineno" valign="top"></td></tr>
218      <tr><td class="lineno" valign="top"></td><td class="lblock">     6.1.  Message Header Registration  . . . . . . . . . . . . . . . <span class="delete">27</span></td><td> </td><td class="rblock">     6.1.  Message Header Registration  . . . . . . . . . . . . . . . <span class="insert">26</span></td><td class="lineno" valign="top"></td></tr>
219      <tr><td class="lineno" valign="top"></td><td class="left">     6.2.  Content Coding Registry  . . . . . . . . . . . . . . . . . 27</td><td> </td><td class="right">     6.2.  Content Coding Registry  . . . . . . . . . . . . . . . . . 27</td><td class="lineno" valign="top"></td></tr>
220      <tr><td><a name="diff0016" /></td></tr>
221      <tr><td class="lineno" valign="top"></td><td class="lblock">   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
222      <tr><td class="lineno" valign="top"></td><td class="lblock">     7.1.  Privacy Issues Connected to Accept Headers . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock">     7.1.  Privacy Issues Connected to Accept Headers . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
223      <tr><td class="lineno" valign="top"></td><td class="lblock">     7.2.  Content-Disposition Issues . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">     7.2.  Content-Disposition Issues . . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
224      <tr><td class="lineno" valign="top"></td><td class="lblock">   8.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">   8.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
225      <tr><td class="lineno" valign="top"></td><td class="lblock">   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
226      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.1.  Normative References . . . . . . . . . . . . . . . . . . . <span class="delete">29</span></td><td> </td><td class="rblock">     9.1.  Normative References . . . . . . . . . . . . . . . . . . . <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
227      <tr><td class="lineno" valign="top"></td><td class="lblock">     9.2.  Informative References . . . . . . . . . . . . . . . . . . <span class="delete">31</span></td><td> </td><td class="rblock">     9.2.  Informative References . . . . . . . . . . . . . . . . . . <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
228      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix A.  Differences Between HTTP Entities and RFC 2045</td><td> </td><td class="right">   Appendix A.  Differences Between HTTP Entities and RFC 2045</td><td class="lineno" valign="top"></td></tr>
229      <tr><td><a name="diff0017" /></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="lblock">                Entities  . . . . . . . . . . . . . . . . . . . . . . <span class="delete">32</span></td><td> </td><td class="rblock">                Entities  . . . . . . . . . . . . . . . . . . . . . . <span class="insert">31</span></td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
232      <tr><td class="lineno" valign="top"></td><td class="left">     A.1.  MIME-Version . . . . . . . . . . . . . . . . . . . . . . . 32</td><td> </td><td class="right">     A.1.  MIME-Version . . . . . . . . . . . . . . . . . . . . . . . 32</td><td class="lineno" valign="top"></td></tr>
233      <tr><td><a name="diff0018" /></td></tr>
234      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.2.  Conversion to Canonical Form . . . . . . . . . . . . . . . <span class="delete">33</span></td><td> </td><td class="rblock">     A.2.  Conversion to Canonical Form . . . . . . . . . . . . . . . <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
235      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.3.  Conversion of Date Formats . . . . . . . . . . . . . . . . <span class="delete">33</span></td><td> </td><td class="rblock">     A.3.  Conversion of Date Formats . . . . . . . . . . . . . . . . <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
236      <tr><td class="lineno" valign="top"></td><td class="left">     A.4.  Introduction of Content-Encoding . . . . . . . . . . . . . 33</td><td> </td><td class="right">     A.4.  Introduction of Content-Encoding . . . . . . . . . . . . . 33</td><td class="lineno" valign="top"></td></tr>
237      <tr><td><a name="diff0019" /></td></tr>
238      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.5.  No Content-Transfer-Encoding . . . . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">     A.5.  No Content-Transfer-Encoding . . . . . . . . . . . . . . . <span class="insert">33</span></td><td class="lineno" valign="top"></td></tr>
239      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.6.  Introduction of Transfer-Encoding  . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">     A.6.  Introduction of Transfer-Encoding  . . . . . . . . . . . . <span class="insert">33</span></td><td class="lineno" valign="top"></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="lblock">     A.7.  MHTML and Line Length Limitations  . . . . . . . . . . . . <span class="delete">34</span></td><td> </td><td class="rblock">     A.7.  MHTML and Line Length Limitations  . . . . . . . . . . . . <span class="insert">33</span></td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix B.  Additional Features . . . . . . . . . . . . . . . . . 34</td><td> </td><td class="right">   Appendix B.  Additional Features . . . . . . . . . . . . . . . . . 34</td><td class="lineno" valign="top"></td></tr>
242      <tr><td><a name="diff0020" /></td></tr>
243      <tr><td class="lineno" valign="top"></td><td class="lblock">     B.1.  Content-Disposition  . . . . . . . . . . . . . . . . . . . 3<span class="delete">5</span></td><td> </td><td class="rblock">     B.1.  Content-Disposition  . . . . . . . . . . . . . . . . . . . 3<span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
244      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix C.  Compatibility with Previous Versions  . . . . . . . . 35</td><td> </td><td class="right">   Appendix C.  Compatibility with Previous Versions  . . . . . . . . 35</td><td class="lineno" valign="top"></td></tr>
245      <tr><td class="lineno" valign="top"></td><td class="left">     C.1.  Changes from RFC 2068  . . . . . . . . . . . . . . . . . . 35</td><td> </td><td class="right">     C.1.  Changes from RFC 2068  . . . . . . . . . . . . . . . . . . 35</td><td class="lineno" valign="top"></td></tr>
246      <tr><td><a name="diff0021" /></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="lblock">     C.2.  Changes from RFC 2616  . . . . . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock">     C.2.  Changes from RFC 2616  . . . . . . . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
248      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix D.  Collected ABNF  . . . . . . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock">   Appendix D.  Collected ABNF  . . . . . . . . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
249      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix E.  Change Log (to be removed by RFC Editor before</td><td> </td><td class="right">   Appendix E.  Change Log (to be removed by RFC Editor before</td><td class="lineno" valign="top"></td></tr>
250      <tr><td class="lineno" valign="top"></td><td class="left">                publication)  . . . . . . . . . . . . . . . . . . . . 38</td><td> </td><td class="right">                publication)  . . . . . . . . . . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
251      <tr><td class="lineno" valign="top"></td><td class="left">     E.1.  Since RFC2616  . . . . . . . . . . . . . . . . . . . . . . 38</td><td> </td><td class="right">     E.1.  Since RFC2616  . . . . . . . . . . . . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
252      <tr><td class="lineno" valign="top"></td><td class="left">     E.2.  Since draft-ietf-httpbis-p3-payload-00 . . . . . . . . . . 38</td><td> </td><td class="right">     E.2.  Since draft-ietf-httpbis-p3-payload-00 . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
253      <tr><td class="lineno" valign="top"></td><td class="left">     E.3.  Since draft-ietf-httpbis-p3-payload-01 . . . . . . . . . . 39</td><td> </td><td class="right">     E.3.  Since draft-ietf-httpbis-p3-payload-01 . . . . . . . . . . 39</td><td class="lineno" valign="top"></td></tr>
254      <tr><td class="lineno" valign="top"></td><td class="left">     E.4.  Since draft-ietf-httpbis-p3-payload-02 . . . . . . . . . . 39</td><td> </td><td class="right">     E.4.  Since draft-ietf-httpbis-p3-payload-02 . . . . . . . . . . 39</td><td class="lineno" valign="top"></td></tr>
255      <tr><td><a name="diff0022" /></td></tr>
256      <tr><td class="lineno" valign="top"></td><td class="lblock">     E.5.  Since draft-ietf-httpbis-p3-payload-03 . . . . . . . . . . <span class="delete">40</span></td><td> </td><td class="rblock">     E.5.  Since draft-ietf-httpbis-p3-payload-03 . . . . . . . . . . <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
257      <tr><td class="lineno" valign="top"></td><td class="left">     E.6.  Since draft-ietf-httpbis-p3-payload-04 . . . . . . . . . . 40</td><td> </td><td class="right">     E.6.  Since draft-ietf-httpbis-p3-payload-04 . . . . . . . . . . 40</td><td class="lineno" valign="top"></td></tr>
258      <tr><td class="lineno" valign="top"></td><td class="left">     E.7.  Since draft-ietf-httpbis-p3-payload-05 . . . . . . . . . . 40</td><td> </td><td class="right">     E.7.  Since draft-ietf-httpbis-p3-payload-05 . . . . . . . . . . 40</td><td class="lineno" valign="top"></td></tr>
259      <tr><td><a name="diff0023" /></td></tr>
260      <tr><td class="lineno" valign="top"></td><td class="lblock">     E.8.  Since draft-ietf-httpbis-p3-payload-06 . . . . . . . . . . 4<span class="delete">1</span></td><td> </td><td class="rblock">     E.8.  Since draft-ietf-httpbis-p3-payload-06 . . . . . . . . . . 4<span class="insert">0</span></td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="left">     E.9.  Since draft-ietf-httpbis-p3-payload-07 . . . . . . . . . . 41</td><td> </td><td class="right">     E.9.  Since draft-ietf-httpbis-p3-payload-07 . . . . . . . . . . 41</td><td class="lineno" valign="top"></td></tr>
262      <tr><td><a name="diff0024" /></td></tr>
263      <tr><td class="lineno" valign="top"></td><td class="lblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">42</span></td><td> </td><td class="rblock">     <span class="insert">E.10. Since draft-ietf-httpbis-p3-payload-08 . . . . . . . . . . 41</span></td><td class="lineno" valign="top"></td></tr>
264      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">41</span></td><td class="lineno" valign="top"></td></tr>
265      <tr><td class="lineno" valign="top"></td><td class="left">   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 44</td><td> </td><td class="right">   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 44</td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
267      <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>
268      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
269      <tr><td class="lineno" valign="top"></td><td class="left">   This document defines HTTP/1.1 message payloads (a.k.a., content),</td><td> </td><td class="right">   This document defines HTTP/1.1 message payloads (a.k.a., content),</td><td class="lineno" valign="top"></td></tr>
270      <tr><td class="lineno" valign="top"></td><td class="left">   the associated metadata header fields that define how the payload is</td><td> </td><td class="right">   the associated metadata header fields that define how the payload is</td><td class="lineno" valign="top"></td></tr>
271      <tr><td class="lineno" valign="top"></td><td class="left">   intended to be interpreted by a recipient, the request header fields</td><td> </td><td class="right">   intended to be interpreted by a recipient, the request header fields</td><td class="lineno" valign="top"></td></tr>
272      <tr><td class="lineno" valign="top"></td><td class="left">   that may influence content selection, and the various selection</td><td> </td><td class="right">   that may influence content selection, and the various selection</td><td class="lineno" valign="top"></td></tr>
273      <tr><td class="lineno" valign="top"></td><td class="left">   algorithms that are collectively referred to as HTTP content</td><td> </td><td class="right">   algorithms that are collectively referred to as HTTP content</td><td class="lineno" valign="top"></td></tr>
274      <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>
275      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
276      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 5, line 51</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 5, line 51</em></th><td></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="left">   representation</td><td> </td><td class="right">   representation</td><td class="lineno" valign="top"></td></tr>
278      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
279      <tr><td class="lineno" valign="top"></td><td class="left">      An entity included with a response that is subject to content</td><td> </td><td class="right">      An entity included with a response that is subject to content</td><td class="lineno" valign="top"></td></tr>
280      <tr><td class="lineno" valign="top"></td><td class="left">      negotiation.  There may exist multiple representations associated</td><td> </td><td class="right">      negotiation.  There may exist multiple representations associated</td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="left">      with a particular response status.</td><td> </td><td class="right">      with a particular response status.</td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
283      <tr><td class="lineno" valign="top"></td><td class="left">   variant</td><td> </td><td class="right">   variant</td><td class="lineno" valign="top"></td></tr>
284      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="left">      A resource may have one, or more than one, representation(s)</td><td> </td><td class="right">      A resource may have one, or more than one, representation(s)</td><td class="lineno" valign="top"></td></tr>
286      <tr><td class="lineno" valign="top"></td><td class="left">      associated with it at any given instant.  Each of these</td><td> </td><td class="right">      associated with it at any given instant.  Each of these</td><td class="lineno" valign="top"></td></tr>
287      <tr><td><a name="diff0025" /></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="lblock">      representations is termed a <span class="delete">`variant'.  Use of the term `variant'</span></td><td> </td><td class="rblock">      representations is termed a <span class="insert">"variant".  Use of the term "variant"</span></td><td class="lineno" valign="top"></td></tr>
289      <tr><td class="lineno" valign="top"></td><td class="left">      does not necessarily imply that the resource is subject to content</td><td> </td><td class="right">      does not necessarily imply that the resource is subject to content</td><td class="lineno" valign="top"></td></tr>
290      <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>
291      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
292      <tr><td class="lineno" valign="top"></td><td class="left">1.2.  Requirements</td><td> </td><td class="right">1.2.  Requirements</td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
294      <tr><td class="lineno" valign="top"></td><td class="left">   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</td><td> </td><td class="right">   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</td><td class="lineno" valign="top"></td></tr>
295      <tr><td class="lineno" valign="top"></td><td class="left">   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</td><td> </td><td class="right">   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</td><td class="lineno" valign="top"></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="left">   document are to be interpreted as described in [RFC2119].</td><td> </td><td class="right">   document are to be interpreted as described in [RFC2119].</td><td class="lineno" valign="top"></td></tr>
297      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="left">   An implementation is not compliant if it fails to satisfy one or more</td><td> </td><td class="right">   An implementation is not compliant if it fails to satisfy one or more</td><td class="lineno" valign="top"></td></tr>
299      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
300      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 14, line 7</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 14, line 7</em></th><td></td></tr>
301      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
302      <tr><td class="lineno" valign="top"></td><td class="left">3.2.2.  Entity Length</td><td> </td><td class="right">3.2.2.  Entity Length</td><td class="lineno" valign="top"></td></tr>
303      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
304      <tr><td class="lineno" valign="top"></td><td class="left">   The entity-length of a message is the length of the message-body</td><td> </td><td class="right">   The entity-length of a message is the length of the message-body</td><td class="lineno" valign="top"></td></tr>
305      <tr><td class="lineno" valign="top"></td><td class="left">   before any transfer-codings have been applied.  Section 3.4 of</td><td> </td><td class="right">   before any transfer-codings have been applied.  Section 3.4 of</td><td class="lineno" valign="top"></td></tr>
306      <tr><td class="lineno" valign="top"></td><td class="left">   [Part1] defines how the transfer-length of a message-body is</td><td> </td><td class="right">   [Part1] defines how the transfer-length of a message-body is</td><td class="lineno" valign="top"></td></tr>
307      <tr><td class="lineno" valign="top"></td><td class="left">   determined.</td><td> </td><td class="right">   determined.</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" valign="top"></td><td class="left">4.  Content Negotiation</td><td> </td><td class="right">4.  Content Negotiation</td><td class="lineno" valign="top"></td></tr>
310      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
311      <tr><td><a name="diff0026" /></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Most</span> HTTP responses include <span class="delete">an entity</span> which contains information for</td><td> </td><td class="rblock">   HTTP responses include <span class="insert">a representation</span> which contains information</td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">interpretation</span> by a human <span class="delete">user.  Naturally, it is desirable to supply</span></td><td> </td><td class="rblock">   for <span class="insert">interpretation, whether</span> by a human user <span class="insert">or</span> for <span class="insert">further</span></td><td class="lineno" valign="top"></td></tr>
314      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the</span> user <span class="delete">with the "best available" entity corresponding to the</span></td><td> </td><td class="rblock"><span class="insert">   processing.  Often,</span> the <span class="insert">server</span> has <span class="insert">different ways</span> of <span class="insert">representing</span> the</td><td class="lineno" valign="top"></td></tr>
315      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request.  Unfortunately</span> for <span class="delete">servers and caches, not all users have</span></td><td> </td><td class="rblock">   <span class="insert">same information;</span> for <span class="insert">example, in different formats, languages, or</span></td><td class="lineno" valign="top"></td></tr>
316      <tr><td class="lineno" valign="top"></td><td class="lblock">   the <span class="delete">same preferences for what is "best," and not all user agents are</span></td><td> </td><td class="rblock"><span class="insert">   using different character encodings.</span></td><td class="lineno" valign="top"></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   equally capable of rendering all entity types.  For that reason, HTTP</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
318      <tr><td class="lineno" valign="top"></td><td class="lblock">   has <span class="delete">provisions for several mechanisms for "content negotiation" --</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
319      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the process</span> of <span class="delete">selecting</span> the <span class="delete">best representation</span> for <span class="delete">a given response</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
320      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   when there are multiple representations available.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
321      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
322      <tr><td><a name="diff0027" /></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">Note: This is not called "format negotiation" because</span> the</td><td> </td><td class="rblock">   <span class="insert">HTTP clients and their users might have different or variable</span></td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">alternate representations may</span> be <span class="delete">of</span> the <span class="delete">same media type, but use</span></td><td> </td><td class="rblock"><span class="insert">   capabilities, characteristics or preferences which would influence</span></td><td class="lineno" valign="top"></td></tr>
325      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      different capabilities</span> of <span class="delete">that type, be in different languages,</span></td><td> </td><td class="rblock"><span class="insert">   which representation, among those available from</span> the <span class="insert">server, would</span> be</td><td class="lineno" valign="top"></td></tr>
326      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      etc.</span></td><td> </td><td class="rblock">   <span class="insert">best for</span> the <span class="insert">server to deliver.  For this reason, HTTP provides</span></td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   mechanisms for "content negotiation" -- a process</span> of <span class="insert">allowing</span></td><td class="lineno" valign="top"></td></tr>
328      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   selection of a representation of a given resource, when more than one</span></td><td class="lineno" valign="top"></td></tr>
329      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   is available.</span></td><td class="lineno" valign="top"></td></tr>
330      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
331      <tr><td><a name="diff0028" /></td></tr>
332      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Any response containing</span> an <span class="delete">entity-body MAY be subject</span> to <span class="delete">negotiation,</span></td><td> </td><td class="rblock">   <span class="insert">This specification defines two patterns of content negotiation;</span></td><td class="lineno" valign="top"></td></tr>
333      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   including error responses.</span></td><td> </td><td class="rblock"><span class="insert">   "server-driven", where the server selects the representation based</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"><span class="insert">   upon the client's stated preferences, and "agent-driven" negotiation,</span></td><td class="lineno" valign="top"></td></tr>
335      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   where the server provides a list of representations for the client to</span></td><td class="lineno" valign="top"></td></tr>
336      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   choose from, based upon their metadata.  In addition, there are other</span></td><td class="lineno" valign="top"></td></tr>
337      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   patterns: some applications use</span> an <span class="insert">"active content" pattern, where</span></td><td class="lineno" valign="top"></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   the server returns active content which runs on the client and, based</span></td><td class="lineno" valign="top"></td></tr>
339      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   on client available parameters, selects additional resources</span> to</td><td class="lineno" valign="top"></td></tr>
340      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">invoke.  "Transparent Content Negotiation" ([RFC2295]) has also been</span></td><td class="lineno" valign="top"></td></tr>
341      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   proposed.</span></td><td class="lineno" valign="top"></td></tr>
342      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
343      <tr><td><a name="diff0029" /></td></tr>
344      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">There are two kinds of content negotiation which are possible in</span></td><td> </td><td class="rblock">   These <span class="insert">patterns</span> are <span class="insert">all widely used,</span> and <span class="insert">have trade-offs</span> in</td><td class="lineno" valign="top"></td></tr>
345      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP: server-driven and agent-driven negotiation.</span>  These <span class="delete">two kinds of</span></td><td> </td><td class="rblock">   <span class="insert">applicability and practicality.  In particular, when the number</span> of</td><td class="lineno" valign="top"></td></tr>
346      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   negotiation</span> are <span class="delete">orthogonal</span> and <span class="delete">thus may be used separately or</span> in</td><td> </td><td class="rblock">   <span class="insert">preferences or capabilities</span> to <span class="insert">be expressed by a client are large</span></td><td class="lineno" valign="top"></td></tr>
347      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">combination.  One method</span> of <span class="delete">combination, referred</span> to as <span class="delete">transparent</span></td><td> </td><td class="rblock"><span class="insert">   (such</span> as when <span class="insert">many different formats are supported by</span> a <span class="insert">user-agent),</span></td><td class="lineno" valign="top"></td></tr>
348      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   negotiation, occurs</span> when a <span class="delete">cache uses the agent-driven</span> negotiation</td><td> </td><td class="rblock"><span class="insert">   server-driven</span> negotiation <span class="insert">becomes unwieldy, and may not be</span></td><td class="lineno" valign="top"></td></tr>
349      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">information provided by</span> the <span class="delete">origin server in order</span> to <span class="delete">provide server-</span></td><td> </td><td class="rblock"><span class="insert">   appropriate.  Conversely, when</span> the <span class="insert">number of representations</span> to</td><td class="lineno" valign="top"></td></tr>
350      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   driven</span> negotiation for <span class="delete">subsequent requests.</span></td><td> </td><td class="rblock">   <span class="insert">choose from is very large, agent-driven</span> negotiation <span class="insert">may not be</span></td><td class="lineno" valign="top"></td></tr>
351      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   appropriate.</span></td><td class="lineno" valign="top"></td></tr>
352      <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>
353      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Note that in all cases, the supplier of representations has the</span></td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   responsibility</span> for <span class="insert">determining which representations might be</span></td><td class="lineno" valign="top"></td></tr>
355      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   considered to be the "same information".</span></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 class="lineno" valign="top"></td><td class="left">4.1.  Server-driven Negotiation</td><td> </td><td class="right">4.1.  Server-driven Negotiation</td><td class="lineno" valign="top"></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="left">   If the selection of the best representation for a response is made by</td><td> </td><td class="right">   If the selection of the best representation for a response is made by</td><td class="lineno" valign="top"></td></tr>
360      <tr><td class="lineno" valign="top"></td><td class="left">   an algorithm located at the server, it is called server-driven</td><td> </td><td class="right">   an algorithm located at the server, it is called server-driven</td><td class="lineno" valign="top"></td></tr>
361      <tr><td class="lineno" valign="top"></td><td class="left">   negotiation.  Selection is based on the available representations of</td><td> </td><td class="right">   negotiation.  Selection is based on the available representations of</td><td class="lineno" valign="top"></td></tr>
362      <tr><td><a name="diff0030" /></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="lblock">   the response (the dimensions over which it can vary; e.g. language,</td><td> </td><td class="rblock">   the response (the dimensions over which it can vary; e.g.<span class="insert">,</span> language,</td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno" valign="top"></td><td class="left">   content-coding, etc.) and the contents of particular header fields in</td><td> </td><td class="right">   content-coding, etc.) and the contents of particular header fields in</td><td class="lineno" valign="top"></td></tr>
365      <tr><td class="lineno" valign="top"></td><td class="left">   the request message or on other information pertaining to the request</td><td> </td><td class="right">   the request message or on other information pertaining to the request</td><td class="lineno" valign="top"></td></tr>
366      <tr><td class="lineno" valign="top"></td><td class="left">   (such as the network address of the client).</td><td> </td><td class="right">   (such as the network address of the client).</td><td class="lineno" valign="top"></td></tr>
367      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
368      <tr><td class="lineno" valign="top"></td><td class="left">   Server-driven negotiation is advantageous when the algorithm for</td><td> </td><td class="right">   Server-driven negotiation is advantageous when the algorithm for</td><td class="lineno" valign="top"></td></tr>
369      <tr><td class="lineno" valign="top"></td><td class="left">   selecting from among the available representations is difficult to</td><td> </td><td class="right">   selecting from among the available representations is difficult to</td><td class="lineno" valign="top"></td></tr>
370      <tr><td class="lineno" valign="top"></td><td class="left">   describe to the user agent, or when the server desires to send its</td><td> </td><td class="right">   describe to the user agent, or when the server desires to send its</td><td class="lineno" valign="top"></td></tr>
371      <tr><td class="lineno" valign="top"></td><td class="left">   "best guess" to the client along with the first response (hoping to</td><td> </td><td class="right">   "best guess" to the client along with the first response (hoping to</td><td class="lineno" valign="top"></td></tr>
372      <tr><td class="lineno" valign="top"></td><td class="left">   avoid the round-trip delay of a subsequent request if the "best</td><td> </td><td class="right">   avoid the round-trip delay of a subsequent request if the "best</td><td class="lineno" valign="top"></td></tr>
373      <tr><td class="lineno" valign="top"></td><td class="left">   guess" is good enough for the user).  In order to improve the</td><td> </td><td class="right">   guess" is good enough for the user).  In order to improve the</td><td class="lineno" valign="top"></td></tr>
374      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
375      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 15, line 34</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 15, line 45</em></th><td></td></tr>
376      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP/1.1 includes the following request-header fields for enabling</td><td> </td><td class="right">   HTTP/1.1 includes the following request-header fields for enabling</td><td class="lineno" valign="top"></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="left">   server-driven negotiation through description of user agent</td><td> </td><td class="right">   server-driven negotiation through description of user agent</td><td class="lineno" valign="top"></td></tr>
378      <tr><td class="lineno" valign="top"></td><td class="left">   capabilities and user preferences: Accept (Section 5.1), Accept-</td><td> </td><td class="right">   capabilities and user preferences: Accept (Section 5.1), Accept-</td><td class="lineno" valign="top"></td></tr>
379      <tr><td class="lineno" valign="top"></td><td class="left">   Charset (Section 5.2), Accept-Encoding (Section 5.3), Accept-Language</td><td> </td><td class="right">   Charset (Section 5.2), Accept-Encoding (Section 5.3), Accept-Language</td><td class="lineno" valign="top"></td></tr>
380      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 5.4), and User-Agent (Section 9.9 of [Part2]).  However, an</td><td> </td><td class="right">   (Section 5.4), and User-Agent (Section 9.9 of [Part2]).  However, an</td><td class="lineno" valign="top"></td></tr>
381      <tr><td class="lineno" valign="top"></td><td class="left">   origin server is not limited to these dimensions and MAY vary the</td><td> </td><td class="right">   origin server is not limited to these dimensions and MAY vary the</td><td class="lineno" valign="top"></td></tr>
382      <tr><td class="lineno" valign="top"></td><td class="left">   response based on any aspect of the request, including information</td><td> </td><td class="right">   response based on any aspect of the request, including information</td><td class="lineno" valign="top"></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="left">   outside the request-header fields or within extension header fields</td><td> </td><td class="right">   outside the request-header fields or within extension header fields</td><td class="lineno" valign="top"></td></tr>
384      <tr><td class="lineno" valign="top"></td><td class="left">   not defined by this specification.</td><td> </td><td class="right">   not defined by this specification.</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><a name="diff0031" /></td></tr>
387      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">      <span class="insert">Note: In practice, User-Agent based negotiation is fragile,</span></td><td class="lineno" valign="top"></td></tr>
388      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      because new clients might not be recognized.</span></td><td class="lineno" valign="top"></td></tr>
389      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="left">   The Vary header field (Section 3.5 of [Part6]) can be used to express</td><td> </td><td class="right">   The Vary header field (Section 3.5 of [Part6]) can be used to express</td><td class="lineno" valign="top"></td></tr>
391      <tr><td class="lineno" valign="top"></td><td class="left">   the parameters the server uses to select a representation that is</td><td> </td><td class="right">   the parameters the server uses to select a representation that is</td><td class="lineno" valign="top"></td></tr>
392      <tr><td class="lineno" valign="top"></td><td class="left">   subject to server-driven negotiation.</td><td> </td><td class="right">   subject to server-driven negotiation.</td><td class="lineno" valign="top"></td></tr>
393      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
394      <tr><td class="lineno" valign="top"></td><td class="left">4.2.  Agent-driven Negotiation</td><td> </td><td class="right">4.2.  Agent-driven Negotiation</td><td class="lineno" valign="top"></td></tr>
395      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
396      <tr><td class="lineno" valign="top"></td><td class="left">   With agent-driven negotiation, selection of the best representation</td><td> </td><td class="right">   With agent-driven negotiation, selection of the best representation</td><td class="lineno" valign="top"></td></tr>
397      <tr><td class="lineno" valign="top"></td><td class="left">   for a response is performed by the user agent after receiving an</td><td> </td><td class="right">   for a response is performed by the user agent after receiving an</td><td class="lineno" valign="top"></td></tr>
398      <tr><td class="lineno" valign="top"></td><td class="left">   initial response from the origin server.  Selection is based on a</td><td> </td><td class="right">   initial response from the origin server.  Selection is based on a</td><td class="lineno" valign="top"></td></tr>
399      <tr><td class="lineno" valign="top"></td><td class="left">   list of the available representations of the response included within</td><td> </td><td class="right">   list of the available representations of the response included within</td><td class="lineno" valign="top"></td></tr>
400      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
401      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 16, line 15</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 16, line 31</em></th><td></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="left">   caches are used to distribute server load and reduce network usage.</td><td> </td><td class="right">   caches are used to distribute server load and reduce network usage.</td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
404      <tr><td class="lineno" valign="top"></td><td class="left">   Agent-driven negotiation suffers from the disadvantage of needing a</td><td> </td><td class="right">   Agent-driven negotiation suffers from the disadvantage of needing a</td><td class="lineno" valign="top"></td></tr>
405      <tr><td class="lineno" valign="top"></td><td class="left">   second request to obtain the best alternate representation.  This</td><td> </td><td class="right">   second request to obtain the best alternate representation.  This</td><td class="lineno" valign="top"></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="left">   second request is only efficient when caching is used.  In addition,</td><td> </td><td class="right">   second request is only efficient when caching is used.  In addition,</td><td class="lineno" valign="top"></td></tr>
407      <tr><td class="lineno" valign="top"></td><td class="left">   this specification does not define any mechanism for supporting</td><td> </td><td class="right">   this specification does not define any mechanism for supporting</td><td class="lineno" valign="top"></td></tr>
408      <tr><td class="lineno" valign="top"></td><td class="left">   automatic selection, though it also does not prevent any such</td><td> </td><td class="right">   automatic selection, though it also does not prevent any such</td><td class="lineno" valign="top"></td></tr>
409      <tr><td class="lineno" valign="top"></td><td class="left">   mechanism from being developed as an extension and used within</td><td> </td><td class="right">   mechanism from being developed as an extension and used within</td><td class="lineno" valign="top"></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP/1.1.</td><td> </td><td class="right">   HTTP/1.1.</td><td class="lineno" valign="top"></td></tr>
411      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
412      <tr><td><a name="diff0032" /></td></tr>
413      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">HTTP/1.1</span> defines the 300 (Multiple Choices) and 406 (Not Acceptable)</td><td> </td><td class="rblock">   <span class="insert">This specification</span> defines the 300 (Multiple Choices) and 406 (Not</td><td class="lineno" valign="top"></td></tr>
414      <tr><td class="lineno" valign="top"></td><td class="lblock">   status codes for enabling agent-driven negotiation when the server is</td><td> </td><td class="rblock">   Acceptable) status codes for enabling agent-driven negotiation when</td><td class="lineno" valign="top"></td></tr>
415      <tr><td class="lineno" valign="top"></td><td class="lblock">   unwilling or unable to provide a varying response using server-driven</td><td> </td><td class="rblock">   the server is unwilling or unable to provide a varying response using</td><td class="lineno" valign="top"></td></tr>
416      <tr><td class="lineno" valign="top"></td><td class="lblock">   negotiation.</td><td> </td><td class="rblock">   server-driven negotiation.</td><td class="lineno" valign="top"></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
418      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.3.  Transparent Negotiation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
419      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Transparent negotiation is a combination of both server-driven and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
421      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   agent-driven negotiation.  When a cache is supplied with a form of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
422      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the list of available representations of the response (as in agent-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   driven negotiation) and the dimensions of variance are completely</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
424      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   understood by the cache, then the cache becomes capable of performing</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   server-driven negotiation on behalf of the origin server for</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   subsequent requests on that resource.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
427      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
428      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Transparent negotiation has the advantage of distributing the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
429      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   negotiation work that would otherwise be required of the origin</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
430      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   server and also removing the second request delay of agent-driven</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
431      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   negotiation when the cache is able to correctly guess the right</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
432      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   response.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
433      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
434      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This specification does not define any mechanism for transparent</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
435      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   negotiation, though it also does not prevent any such mechanism from</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
436      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   being developed as an extension that could be used within HTTP/1.1.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
437      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
438      <tr><td class="lineno" valign="top"></td><td class="left">5.  Header Field Definitions</td><td> </td><td class="right">5.  Header Field Definitions</td><td class="lineno" valign="top"></td></tr>
439      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
440      <tr><td class="lineno" valign="top"></td><td class="left">   This section defines the syntax and semantics of HTTP/1.1 header</td><td> </td><td class="right">   This section defines the syntax and semantics of HTTP/1.1 header</td><td class="lineno" valign="top"></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="left">   fields related to the payload of messages.</td><td> </td><td class="right">   fields related to the payload of messages.</td><td class="lineno" valign="top"></td></tr>
442      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
443      <tr><td class="lineno" valign="top"></td><td class="left">   For entity-header fields, both sender and recipient refer to either</td><td> </td><td class="right">   For entity-header fields, both sender and recipient refer to either</td><td class="lineno" valign="top"></td></tr>
444      <tr><td class="lineno" valign="top"></td><td class="left">   the client or the server, depending on who sends and who receives the</td><td> </td><td class="right">   the client or the server, depending on who sends and who receives the</td><td class="lineno" valign="top"></td></tr>
445      <tr><td class="lineno" valign="top"></td><td class="left">   entity.</td><td> </td><td class="right">   entity.</td><td class="lineno" valign="top"></td></tr>
446      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
447      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
448      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 21, line 50</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 21, line 33</em></th><td></td></tr>
449      <tr><td class="lineno" valign="top"></td><td class="left">               &lt;language-range, defined in [RFC4647], Section 2.1&gt;</td><td> </td><td class="right">               &lt;language-range, defined in [RFC4647], Section 2.1&gt;</td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
451      <tr><td class="lineno" valign="top"></td><td class="left">   Each language-range can be given an associated quality value which</td><td> </td><td class="right">   Each language-range can be given an associated quality value which</td><td class="lineno" valign="top"></td></tr>
452      <tr><td class="lineno" valign="top"></td><td class="left">   represents an estimate of the user's preference for the languages</td><td> </td><td class="right">   represents an estimate of the user's preference for the languages</td><td class="lineno" valign="top"></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="left">   specified by that range.  The quality value defaults to "q=1".  For</td><td> </td><td class="right">   specified by that range.  The quality value defaults to "q=1".  For</td><td class="lineno" valign="top"></td></tr>
454      <tr><td class="lineno" valign="top"></td><td class="left">   example,</td><td> </td><td class="right">   example,</td><td class="lineno" valign="top"></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="left">     Accept-Language: da, en-gb;q=0.8, en;q=0.7</td><td> </td><td class="right">     Accept-Language: da, en-gb;q=0.8, en;q=0.7</td><td class="lineno" valign="top"></td></tr>
457      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
458      <tr><td class="lineno" valign="top"></td><td class="left">   would mean: "I prefer Danish, but will accept British English and</td><td> </td><td class="right">   would mean: "I prefer Danish, but will accept British English and</td><td class="lineno" valign="top"></td></tr>
459      <tr><td><a name="diff0033" /></td></tr>
460      <tr><td class="lineno" valign="top"></td><td class="lblock">   other types of English."</td><td> </td><td class="rblock">   other types of English." <span class="insert">(see also</span> Section <span class="insert">2.3</span> of <span class="insert">[RFC4647])</span></td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
462      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">For matching, the "Basic Filtering" matching scheme, defined in</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="lblock">   Section <span class="delete">3.3.1</span> of <span class="delete">[RFC4647], is used:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
464      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
465      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      A language range matches a particular language tag if, in a case-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
466      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      insensitive comparison, it exactly equals the tag, or if it</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
467      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      exactly equals a prefix of the tag such that the first character</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
468      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      following the prefix is "-".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
469      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
470      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The special range "*", if present in the Accept-Language field,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
471      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   matches every tag not matched by any other range present in the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
472      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Accept-Language field.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
473      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
474      <tr><td><a name="diff0034" /></td></tr>
475      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">Note: This use</span> of <span class="delete">a prefix</span> matching <span class="delete">rule does not imply that</span></td><td> </td><td class="rblock">   <span class="insert">For matching, Section 3</span> of <span class="insert">[RFC4647] defines several</span> matching</td><td class="lineno" valign="top"></td></tr>
476      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      language tags are assigned to languages in such a way that it is</span></td><td> </td><td class="rblock">   <span class="insert">schemes.  Implementations can offer</span> the <span class="insert">most appropriate matching</span></td><td class="lineno" valign="top"></td></tr>
477      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      always true that if a user understands a language with a certain</span></td><td> </td><td class="rblock"><span class="insert">   scheme for their requirements.</span></td><td class="lineno" valign="top"></td></tr>
478      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      tag, then this user will also understand all languages with tags</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
479      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      for which this tag is a prefix.  The prefix rule simply allows the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
480      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      use of prefix tags if this is</span> the <span class="delete">case.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
481      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
482      <tr><td><a name="diff0035" /></td></tr>
483      <tr><td class="lineno" valign="top"></td><td class="lblock">   The <span class="delete">language quality factor assigned to a language-tag by the Accept-</span></td><td> </td><td class="rblock">      <span class="insert">Note:</span> The <span class="insert">"Basic Filtering" scheme ([RFC4647], Section 3.3.1)</span> is</td><td class="lineno" valign="top"></td></tr>
484      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Language field</span> is the <span class="delete">quality value of the longest language-range in</span></td><td> </td><td class="rblock">      <span class="insert">identical to</span> the <span class="insert">matching scheme</span> that <span class="insert">was previously defined</span> in</td><td class="lineno" valign="top"></td></tr>
485      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the field</span> that <span class="delete">matches the language-tag.  If no language-range</span> in <span class="delete">the</span></td><td> </td><td class="rblock">      <span class="insert">Section 14.4 of [RFC2616].</span></td><td class="lineno" valign="top"></td></tr>
486      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   field matches the tag, the language quality factor assigned is 0.  If</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
487      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   no Accept-Language header is present in the request, the server</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
488      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   SHOULD assume that all languages are equally acceptable.  If an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
489      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Accept-Language header is present, then all languages which are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
490      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   assigned a quality factor greater than 0 are acceptable.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
491      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
492      <tr><td class="lineno" valign="top"></td><td class="left">   It might be contrary to the privacy expectations of the user to send</td><td> </td><td class="right">   It might be contrary to the privacy expectations of the user to send</td><td class="lineno" valign="top"></td></tr>
493      <tr><td class="lineno" valign="top"></td><td class="left">   an Accept-Language header with the complete linguistic preferences of</td><td> </td><td class="right">   an Accept-Language header with the complete linguistic preferences of</td><td class="lineno" valign="top"></td></tr>
494      <tr><td class="lineno" valign="top"></td><td class="left">   the user in every request.  For a discussion of this issue, see</td><td> </td><td class="right">   the user in every request.  For a discussion of this issue, see</td><td class="lineno" valign="top"></td></tr>
495      <tr><td class="lineno" valign="top"></td><td class="left">   Section 7.1.</td><td> </td><td class="right">   Section 7.1.</td><td class="lineno" valign="top"></td></tr>
496      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
497      <tr><td class="lineno" valign="top"></td><td class="left">   As intelligibility is highly dependent on the individual user, it is</td><td> </td><td class="right">   As intelligibility is highly dependent on the individual user, it is</td><td class="lineno" valign="top"></td></tr>
498      <tr><td class="lineno" valign="top"></td><td class="left">   recommended that client applications make the choice of linguistic</td><td> </td><td class="right">   recommended that client applications make the choice of linguistic</td><td class="lineno" valign="top"></td></tr>
499      <tr><td class="lineno" valign="top"></td><td class="left">   preference available to the user.  If the choice is not made</td><td> </td><td class="right">   preference available to the user.  If the choice is not made</td><td class="lineno" valign="top"></td></tr>
500      <tr><td class="lineno" valign="top"></td><td class="left">   available, then the Accept-Language header field MUST NOT be given in</td><td> </td><td class="right">   available, then the Accept-Language header field MUST NOT be given in</td><td class="lineno" valign="top"></td></tr>
501      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
502      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 26, line 26</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 25, line 38</em></th><td></td></tr>
503      <tr><td class="lineno" valign="top"></td><td class="left">   content of the body-part has had the encoding applied, and the body-</td><td> </td><td class="right">   content of the body-part has had the encoding applied, and the body-</td><td class="lineno" valign="top"></td></tr>
504      <tr><td class="lineno" valign="top"></td><td class="left">   part is included in the Content-MD5 digest as is -- i.e., after the</td><td> </td><td class="right">   part is included in the Content-MD5 digest as is -- i.e., after the</td><td class="lineno" valign="top"></td></tr>
505      <tr><td class="lineno" valign="top"></td><td class="left">   application.  The Transfer-Encoding header field is not allowed</td><td> </td><td class="right">   application.  The Transfer-Encoding header field is not allowed</td><td class="lineno" valign="top"></td></tr>
506      <tr><td class="lineno" valign="top"></td><td class="left">   within body-parts.</td><td> </td><td class="right">   within body-parts.</td><td class="lineno" valign="top"></td></tr>
507      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
508      <tr><td class="lineno" valign="top"></td><td class="left">   Conversion of all line breaks to CRLF MUST NOT be done before</td><td> </td><td class="right">   Conversion of all line breaks to CRLF MUST NOT be done before</td><td class="lineno" valign="top"></td></tr>
509      <tr><td class="lineno" valign="top"></td><td class="left">   computing or checking the digest: the line break convention used in</td><td> </td><td class="right">   computing or checking the digest: the line break convention used in</td><td class="lineno" valign="top"></td></tr>
510      <tr><td class="lineno" valign="top"></td><td class="left">   the text actually transmitted MUST be left unaltered when computing</td><td> </td><td class="right">   the text actually transmitted MUST be left unaltered when computing</td><td class="lineno" valign="top"></td></tr>
511      <tr><td class="lineno" valign="top"></td><td class="left">   the digest.</td><td> </td><td class="right">   the digest.</td><td class="lineno" valign="top"></td></tr>
512      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
513      <tr><td><a name="diff0036" /></td></tr>
514      <tr><td class="lineno" valign="top"></td><td class="lblock">      Note: <span class="delete">w</span>hile the definition of Content-MD5 is exactly the same for</td><td> </td><td class="rblock">      Note: <span class="insert">W</span>hile the definition of Content-MD5 is exactly the same for</td><td class="lineno" valign="top"></td></tr>
515      <tr><td class="lineno" valign="top"></td><td class="left">      HTTP as in RFC 1864 for MIME entity-bodies, there are several ways</td><td> </td><td class="right">      HTTP as in RFC 1864 for MIME entity-bodies, there are several ways</td><td class="lineno" valign="top"></td></tr>
516      <tr><td class="lineno" valign="top"></td><td class="left">      in which the application of Content-MD5 to HTTP entity-bodies</td><td> </td><td class="right">      in which the application of Content-MD5 to HTTP entity-bodies</td><td class="lineno" valign="top"></td></tr>
517      <tr><td class="lineno" valign="top"></td><td class="left">      differs from its application to MIME entity-bodies.  One is that</td><td> </td><td class="right">      differs from its application to MIME entity-bodies.  One is that</td><td class="lineno" valign="top"></td></tr>
518      <tr><td class="lineno" valign="top"></td><td class="left">      HTTP, unlike MIME, does not use Content-Transfer-Encoding, and</td><td> </td><td class="right">      HTTP, unlike MIME, does not use Content-Transfer-Encoding, and</td><td class="lineno" valign="top"></td></tr>
519      <tr><td class="lineno" valign="top"></td><td class="left">      does use Transfer-Encoding and Content-Encoding.  Another is that</td><td> </td><td class="right">      does use Transfer-Encoding and Content-Encoding.  Another is that</td><td class="lineno" valign="top"></td></tr>
520      <tr><td class="lineno" valign="top"></td><td class="left">      HTTP more frequently uses binary content types than MIME, so it is</td><td> </td><td class="right">      HTTP more frequently uses binary content types than MIME, so it is</td><td class="lineno" valign="top"></td></tr>
521      <tr><td class="lineno" valign="top"></td><td class="left">      worth noting that, in such cases, the byte order used to compute</td><td> </td><td class="right">      worth noting that, in such cases, the byte order used to compute</td><td class="lineno" valign="top"></td></tr>
522      <tr><td class="lineno" valign="top"></td><td class="left">      the digest is the transmission byte order defined for the type.</td><td> </td><td class="right">      the digest is the transmission byte order defined for the type.</td><td class="lineno" valign="top"></td></tr>
523      <tr><td class="lineno" valign="top"></td><td class="left">      Lastly, HTTP allows transmission of text types with any of several</td><td> </td><td class="right">      Lastly, HTTP allows transmission of text types with any of several</td><td class="lineno" valign="top"></td></tr>
524      <tr><td class="lineno" valign="top"></td><td class="left">      line break conventions and not just the canonical form using CRLF.</td><td> </td><td class="right">      line break conventions and not just the canonical form using CRLF.</td><td class="lineno" valign="top"></td></tr>
525      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
526      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 29, line 36</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 28, line 45</em></th><td></td></tr>
527      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
528      <tr><td class="lineno" valign="top"></td><td class="left">   [ISO-8859-1]</td><td> </td><td class="right">   [ISO-8859-1]</td><td class="lineno" valign="top"></td></tr>
529      <tr><td class="lineno" valign="top"></td><td class="left">              International Organization for Standardization,</td><td> </td><td class="right">              International Organization for Standardization,</td><td class="lineno" valign="top"></td></tr>
530      <tr><td class="lineno" valign="top"></td><td class="left">              "Information technology -- 8-bit single-byte coded graphic</td><td> </td><td class="right">              "Information technology -- 8-bit single-byte coded graphic</td><td class="lineno" valign="top"></td></tr>
531      <tr><td class="lineno" valign="top"></td><td class="left">              character sets -- Part 1: Latin alphabet No. 1", ISO/</td><td> </td><td class="right">              character sets -- Part 1: Latin alphabet No. 1", ISO/</td><td class="lineno" valign="top"></td></tr>
532      <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>
533      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
534      <tr><td class="lineno" valign="top"></td><td class="left">   [Part1]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part1]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
535      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
536      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections,</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections,</td><td class="lineno" valign="top"></td></tr>
537      <tr><td><a name="diff0037" /></td></tr>
538      <tr><td class="lineno" valign="top"></td><td class="lblock">              and Message Parsing", <span class="delete">draft-ietf-httpbis-p1-messaging-08</span></td><td> </td><td class="rblock">              and Message Parsing", <span class="insert">draft-ietf-httpbis-p1-messaging-09</span></td><td class="lineno" valign="top"></td></tr>
539      <tr><td class="lineno" valign="top"></td><td class="lblock">              (work in progress), <span class="delete">October 2009.</span></td><td> </td><td class="rblock">              (work in progress), <span class="insert">March 2010.</span></td><td class="lineno" valign="top"></td></tr>
540      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
541      <tr><td class="lineno" valign="top"></td><td class="left">   [Part2]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part2]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
542      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
543      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 2: Message</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 2: Message</td><td class="lineno" valign="top"></td></tr>
544      <tr><td><a name="diff0038" /></td></tr>
545      <tr><td class="lineno" valign="top"></td><td class="lblock">              Semantics", <span class="delete">draft-ietf-httpbis-p2-semantics-08</span> (work in</td><td> </td><td class="rblock">              Semantics", <span class="insert">draft-ietf-httpbis-p2-semantics-09</span> (work in</td><td class="lineno" valign="top"></td></tr>
546      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">October 2009.</span></td><td> </td><td class="rblock">              progress), <span class="insert">March 2010.</span></td><td class="lineno" valign="top"></td></tr>
547      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
548      <tr><td class="lineno" valign="top"></td><td class="left">   [Part4]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part4]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
549      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
550      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 4: Conditional</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 4: Conditional</td><td class="lineno" valign="top"></td></tr>
551      <tr><td><a name="diff0039" /></td></tr>
552      <tr><td class="lineno" valign="top"></td><td class="lblock">              Requests", <span class="delete">draft-ietf-httpbis-p4-conditional-08</span> (work in</td><td> </td><td class="rblock">              Requests", <span class="insert">draft-ietf-httpbis-p4-conditional-09</span> (work in</td><td class="lineno" valign="top"></td></tr>
553      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">October 2009.</span></td><td> </td><td class="rblock">              progress), <span class="insert">March 2010.</span></td><td class="lineno" valign="top"></td></tr>
554      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
555      <tr><td class="lineno" valign="top"></td><td class="left">   [Part5]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part5]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
556      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
557      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 5: Range Requests and</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 5: Range Requests and</td><td class="lineno" valign="top"></td></tr>
558      <tr><td><a name="diff0040" /></td></tr>
559      <tr><td class="lineno" valign="top"></td><td class="lblock">              Partial Responses", <span class="delete">draft-ietf-httpbis-p5-range-08</span> (work</td><td> </td><td class="rblock">              Partial Responses", <span class="insert">draft-ietf-httpbis-p5-range-09</span> (work</td><td class="lineno" valign="top"></td></tr>
560      <tr><td class="lineno" valign="top"></td><td class="lblock">              in progress), <span class="delete">October 2009.</span></td><td> </td><td class="rblock">              in progress), <span class="insert">March 2010.</span></td><td class="lineno" valign="top"></td></tr>
561      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
562      <tr><td class="lineno" valign="top"></td><td class="left">   [Part6]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part6]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
563      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td> </td><td class="right">              Masinter, L., Leach, P., Berners-Lee, T., Lafon, Y., Ed.,</td><td class="lineno" valign="top"></td></tr>
564      <tr><td class="lineno" valign="top"></td><td class="left">              Nottingham, M., Ed., and J. Reschke, Ed., "HTTP/1.1, part</td><td> </td><td class="right">              Nottingham, M., Ed., and J. Reschke, Ed., "HTTP/1.1, part</td><td class="lineno" valign="top"></td></tr>
565      <tr><td><a name="diff0041" /></td></tr>
566      <tr><td class="lineno" valign="top"></td><td class="lblock">              6: Caching", <span class="delete">draft-ietf-httpbis-p6-cache-08</span> (work in</td><td> </td><td class="rblock">              6: Caching", <span class="insert">draft-ietf-httpbis-p6-cache-09</span> (work in</td><td class="lineno" valign="top"></td></tr>
567      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">October 2009.</span></td><td> </td><td class="rblock">              progress), <span class="insert">March 2010.</span></td><td class="lineno" valign="top"></td></tr>
568      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
569      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC1864]  Myers, J. and M. Rose, "The Content-MD5 Header Field",</td><td> </td><td class="right">   [RFC1864]  Myers, J. and M. Rose, "The Content-MD5 Header Field",</td><td class="lineno" valign="top"></td></tr>
570      <tr><td class="lineno" valign="top"></td><td class="left">              RFC 1864, October 1995.</td><td> </td><td class="right">              RFC 1864, October 1995.</td><td class="lineno" valign="top"></td></tr>
571      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
572      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC1950]  Deutsch, L. and J-L. Gailly, "ZLIB Compressed Data Format</td><td> </td><td class="right">   [RFC1950]  Deutsch, L. and J-L. Gailly, "ZLIB Compressed Data Format</td><td class="lineno" valign="top"></td></tr>
573      <tr><td class="lineno" valign="top"></td><td class="left">              Specification version 3.3", RFC 1950, May 1996.</td><td> </td><td class="right">              Specification version 3.3", RFC 1950, May 1996.</td><td class="lineno" valign="top"></td></tr>
574      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
575      <tr><td class="lineno" valign="top"></td><td class="left">              RFC 1950 is an Informational RFC, thus it may be less</td><td> </td><td class="right">              RFC 1950 is an Informational RFC, thus it may be less</td><td class="lineno" valign="top"></td></tr>
576      <tr><td class="lineno" valign="top"></td><td class="left">              stable than this specification.  On the other hand, this</td><td> </td><td class="right">              stable than this specification.  On the other hand, this</td><td class="lineno" valign="top"></td></tr>
577      <tr><td class="lineno" valign="top"></td><td class="left">              downward reference was present since the publication of</td><td> </td><td class="right">              downward reference was present since the publication of</td><td class="lineno" valign="top"></td></tr>
578      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
579      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 31, line 38</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 30, line 46</em></th><td></td></tr>
580      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2076]  Palme, J., "Common Internet Message Headers", RFC 2076,</td><td> </td><td class="right">   [RFC2076]  Palme, J., "Common Internet Message Headers", RFC 2076,</td><td class="lineno" valign="top"></td></tr>
581      <tr><td class="lineno" valign="top"></td><td class="left">              February 1997.</td><td> </td><td class="right">              February 1997.</td><td class="lineno" valign="top"></td></tr>
582      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
583      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2183]  Troost, R., Dorner, S., and K. Moore, "Communicating</td><td> </td><td class="right">   [RFC2183]  Troost, R., Dorner, S., and K. Moore, "Communicating</td><td class="lineno" valign="top"></td></tr>
584      <tr><td class="lineno" valign="top"></td><td class="left">              Presentation Information in Internet Messages: The</td><td> </td><td class="right">              Presentation Information in Internet Messages: The</td><td class="lineno" valign="top"></td></tr>
585      <tr><td class="lineno" valign="top"></td><td class="left">              Content-Disposition Header Field", RFC 2183, August 1997.</td><td> </td><td class="right">              Content-Disposition Header Field", RFC 2183, August 1997.</td><td class="lineno" valign="top"></td></tr>
586      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
587      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2277]  Alvestrand, H., "IETF Policy on Character Sets and</td><td> </td><td class="right">   [RFC2277]  Alvestrand, H., "IETF Policy on Character Sets and</td><td class="lineno" valign="top"></td></tr>
588      <tr><td class="lineno" valign="top"></td><td class="left">              Languages", BCP 18, RFC 2277, January 1998.</td><td> </td><td class="right">              Languages", BCP 18, RFC 2277, January 1998.</td><td class="lineno" valign="top"></td></tr>
589      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
590      <tr><td><a name="diff0042" /></td></tr>
591      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">[RFC2295]  Holtman, K. and A. Mutz, "Transparent Content Negotiation</span></td><td class="lineno" valign="top"></td></tr>
592      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">              in HTTP", RFC 2295, March 1998.</span></td><td class="lineno" valign="top"></td></tr>
593      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
594      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2388]  Masinter, L., "Returning Values from Forms:  multipart/</td><td> </td><td class="right">   [RFC2388]  Masinter, L., "Returning Values from Forms:  multipart/</td><td class="lineno" valign="top"></td></tr>
595      <tr><td class="lineno" valign="top"></td><td class="left">              form-data", RFC 2388, August 1998.</td><td> </td><td class="right">              form-data", RFC 2388, August 1998.</td><td class="lineno" valign="top"></td></tr>
596      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
597      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2557]  Palme, F., Hopmann, A., Shelness, N., and E. Stefferud,</td><td> </td><td class="right">   [RFC2557]  Palme, F., Hopmann, A., Shelness, N., and E. Stefferud,</td><td class="lineno" valign="top"></td></tr>
598      <tr><td class="lineno" valign="top"></td><td class="left">              "MIME Encapsulation of Aggregate Documents, such as HTML</td><td> </td><td class="right">              "MIME Encapsulation of Aggregate Documents, such as HTML</td><td class="lineno" valign="top"></td></tr>
599      <tr><td class="lineno" valign="top"></td><td class="left">              (MHTML)", RFC 2557, March 1999.</td><td> </td><td class="right">              (MHTML)", RFC 2557, March 1999.</td><td class="lineno" valign="top"></td></tr>
600      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
601      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
602      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext</td><td> </td><td class="right">              Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext</td><td class="lineno" valign="top"></td></tr>
603      <tr><td class="lineno" valign="top"></td><td class="left">              Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.</td><td> </td><td class="right">              Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.</td><td class="lineno" valign="top"></td></tr>
604      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
605      <tr bgcolor="gray" ><td></td><th><a name="part-l12" /><small>skipping to change at</small><em> page 35, line 33</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 34, line 47</em></th><td></td></tr>
606      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
607      <tr><td class="lineno" valign="top"></td><td class="left">     Content-Disposition: attachment; filename="fname.ext"</td><td> </td><td class="right">     Content-Disposition: attachment; filename="fname.ext"</td><td class="lineno" valign="top"></td></tr>
608      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
609      <tr><td class="lineno" valign="top"></td><td class="left">   The receiving user agent SHOULD NOT respect any directory path</td><td> </td><td class="right">   The receiving user agent SHOULD NOT respect any directory path</td><td class="lineno" valign="top"></td></tr>
610      <tr><td class="lineno" valign="top"></td><td class="left">   information present in the filename-parm parameter, which is the only</td><td> </td><td class="right">   information present in the filename-parm parameter, which is the only</td><td class="lineno" valign="top"></td></tr>
611      <tr><td class="lineno" valign="top"></td><td class="left">   parameter believed to apply to HTTP implementations at this time.</td><td> </td><td class="right">   parameter believed to apply to HTTP implementations at this time.</td><td class="lineno" valign="top"></td></tr>
612      <tr><td class="lineno" valign="top"></td><td class="left">   The filename SHOULD be treated as a terminal component only.</td><td> </td><td class="right">   The filename SHOULD be treated as a terminal component only.</td><td class="lineno" valign="top"></td></tr>
613      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
614      <tr><td class="lineno" valign="top"></td><td class="left">   If this header is used in a response with the application/</td><td> </td><td class="right">   If this header is used in a response with the application/</td><td class="lineno" valign="top"></td></tr>
615      <tr><td class="lineno" valign="top"></td><td class="left">   octet-stream content-type, the implied suggestion is that the user</td><td> </td><td class="right">   octet-stream content-type, the implied suggestion is that the user</td><td class="lineno" valign="top"></td></tr>
616      <tr><td><a name="diff0043" /></td></tr>
617      <tr><td class="lineno" valign="top"></td><td class="lblock">   agent should not display the response, but directly enter a <span class="delete">`save</span></td><td> </td><td class="rblock">   agent should not display the response, but directly enter a <span class="insert">"save</span></td><td class="lineno" valign="top"></td></tr>
618      <tr><td class="lineno" valign="top"></td><td class="lblock">   response <span class="delete">as...'</span> dialog.</td><td> </td><td class="rblock">   response <span class="insert">as..."</span> dialog.</td><td class="lineno" valign="top"></td></tr>
619      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
620      <tr><td class="lineno" valign="top"></td><td class="left">   See Section 7.2 for Content-Disposition security issues.</td><td> </td><td class="right">   See Section 7.2 for Content-Disposition security issues.</td><td class="lineno" valign="top"></td></tr>
621      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
622      <tr><td class="lineno" valign="top"></td><td class="left">Appendix C.  Compatibility with Previous Versions</td><td> </td><td class="right">Appendix C.  Compatibility with Previous Versions</td><td class="lineno" valign="top"></td></tr>
623      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
624      <tr><td class="lineno" valign="top"></td><td class="left">C.1.  Changes from RFC 2068</td><td> </td><td class="right">C.1.  Changes from RFC 2068</td><td class="lineno" valign="top"></td></tr>
625      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
626      <tr><td class="lineno" valign="top"></td><td class="left">   Transfer-coding and message lengths all interact in ways that</td><td> </td><td class="right">   Transfer-coding and message lengths all interact in ways that</td><td class="lineno" valign="top"></td></tr>
627      <tr><td class="lineno" valign="top"></td><td class="left">   required fixing exactly when chunked encoding is used (to allow for</td><td> </td><td class="right">   required fixing exactly when chunked encoding is used (to allow for</td><td class="lineno" valign="top"></td></tr>
628      <tr><td class="lineno" valign="top"></td><td class="left">   transfer encoding that may not be self delimiting); it was important</td><td> </td><td class="right">   transfer encoding that may not be self delimiting); it was important</td><td class="lineno" valign="top"></td></tr>
629      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
630      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 42, line 13</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 41, line 37</em></th><td></td></tr>
631      <tr><td class="lineno" valign="top"></td><td class="left">   Partly resolved issues:</td><td> </td><td class="right">   Partly resolved issues:</td><td class="lineno" valign="top"></td></tr>
632      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
633      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/148&gt;: "update IANA</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/148&gt;: "update IANA</td><td class="lineno" valign="top"></td></tr>
634      <tr><td class="lineno" valign="top"></td><td class="left">      requirements wrt Transfer-Coding values" (add the IANA</td><td> </td><td class="right">      requirements wrt Transfer-Coding values" (add the IANA</td><td class="lineno" valign="top"></td></tr>
635      <tr><td class="lineno" valign="top"></td><td class="left">      Considerations subsection)</td><td> </td><td class="right">      Considerations subsection)</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">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/149&gt;: "update IANA</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/149&gt;: "update IANA</td><td class="lineno" valign="top"></td></tr>
638      <tr><td class="lineno" valign="top"></td><td class="left">      requirements wrt Content-Coding values" (add the IANA</td><td> </td><td class="right">      requirements wrt Content-Coding values" (add the IANA</td><td class="lineno" valign="top"></td></tr>
639      <tr><td class="lineno" valign="top"></td><td class="left">      Considerations subsection)</td><td> </td><td class="right">      Considerations subsection)</td><td class="lineno" valign="top"></td></tr>
640      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
641      <tr><td><a name="diff0044" /></td></tr>
642      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">E.10.  Since draft-ietf-httpbis-p3-payload-08</span></td><td class="lineno" valign="top"></td></tr>
643      <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>
644      <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>
645      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
646      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/81&gt;: "Content</span></td><td class="lineno" valign="top"></td></tr>
647      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      Negotiation for media types"</span></td><td class="lineno" valign="top"></td></tr>
648      <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>
649      <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/181&gt;: "Accept-</span></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"><span class="insert">      Language: which RFC4647 filtering?"</span></td><td class="lineno" valign="top"></td></tr>
651      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
652      <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>
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">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
655      <tr><td><a name="diff0045" /></td></tr>
656      <tr><td class="lineno" valign="top"></td><td class="lblock">      Accept header  1<span class="delete">7</span></td><td> </td><td class="rblock">      Accept header  1<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
657      <tr><td class="lineno" valign="top"></td><td class="left">      Accept-Charset header  19</td><td> </td><td class="right">      Accept-Charset header  19</td><td class="lineno" valign="top"></td></tr>
658      <tr><td><a name="diff0046" /></td></tr>
659      <tr><td class="lineno" valign="top"></td><td class="lblock">      Accept-Encoding header  <span class="delete">20</span></td><td> </td><td class="rblock">      Accept-Encoding header  <span class="insert">19</span></td><td class="lineno" valign="top"></td></tr>
660      <tr><td class="lineno" valign="top"></td><td class="left">      Accept-Language header  21</td><td> </td><td class="right">      Accept-Language header  21</td><td class="lineno" valign="top"></td></tr>
661      <tr><td><a name="diff0047" /></td></tr>
662      <tr><td class="lineno" valign="top"></td><td class="lblock">      Alternates header  3<span class="delete">6</span></td><td> </td><td class="rblock">      Alternates header  3<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
663      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
664      <tr><td class="lineno" valign="top"></td><td class="left">   C</td><td> </td><td class="right">   C</td><td class="lineno" valign="top"></td></tr>
665      <tr><td class="lineno" valign="top"></td><td class="left">      Coding Format</td><td> </td><td class="right">      Coding Format</td><td class="lineno" valign="top"></td></tr>
666      <tr><td class="lineno" valign="top"></td><td class="left">         compress  8</td><td> </td><td class="right">         compress  8</td><td class="lineno" valign="top"></td></tr>
667      <tr><td class="lineno" valign="top"></td><td class="left">         deflate  8</td><td> </td><td class="right">         deflate  8</td><td class="lineno" valign="top"></td></tr>
668      <tr><td class="lineno" valign="top"></td><td class="left">         gzip  9</td><td> </td><td class="right">         gzip  9</td><td class="lineno" valign="top"></td></tr>
669      <tr><td class="lineno" valign="top"></td><td class="left">         identity  9</td><td> </td><td class="right">         identity  9</td><td class="lineno" valign="top"></td></tr>
670      <tr><td class="lineno" valign="top"></td><td class="left">      compress (Coding Format)  8</td><td> </td><td class="right">      compress (Coding Format)  8</td><td class="lineno" valign="top"></td></tr>
671      <tr><td class="lineno" valign="top"></td><td class="left">      content negotiation  5</td><td> </td><td class="right">      content negotiation  5</td><td class="lineno" valign="top"></td></tr>
672      <tr><td><a name="diff0048" /></td></tr>
673      <tr><td class="lineno" valign="top"></td><td class="lblock">      Content-Base header  <span class="delete">36</span></td><td> </td><td class="rblock">      Content-Base header  <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
674      <tr><td class="lineno" valign="top"></td><td class="lblock">      Content-Disposition header  <span class="delete">35</span></td><td> </td><td class="rblock">      Content-Disposition header  <span class="insert">34</span></td><td class="lineno" valign="top"></td></tr>
675      <tr><td class="lineno" valign="top"></td><td class="lblock">      Content-Encoding header  <span class="delete">23</span></td><td> </td><td class="rblock">      Content-Encoding header  <span class="insert">22</span></td><td class="lineno" valign="top"></td></tr>
676      <tr><td class="lineno" valign="top"></td><td class="left">      Content-Language header  23</td><td> </td><td class="right">      Content-Language header  23</td><td class="lineno" valign="top"></td></tr>
677      <tr><td><a name="diff0049" /></td></tr>
678      <tr><td class="lineno" valign="top"></td><td class="lblock">      Content-Location header  <span class="delete">24</span></td><td> </td><td class="rblock">      Content-Location header  <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
679      <tr><td class="lineno" valign="top"></td><