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	38	<tr bgcolor="orange"><th></th><th> draft-ietf-httpbis-p3-payload-08.txt </th><th> </th><th> draft-ietf-httpbis-p3-payload-09.txt </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 <http://tools.ietf.org/wg/httpbis/trac/report/11> 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"> <http://tools.ietf.org/wg/httpbis/>.</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 <http://tools.ietf.org/wg/httpbis/trac/report/11></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"> <http://tools.ietf.org/wg/httpbis/>.</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"> <language-range, defined in [RFC4647], Section 2.1></td><td> </td><td class="right"> <language-range, defined in [RFC4647], Section 2.1></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 <http://tools.ietf.org/wg/httpbis/trac/ticket/148>: "update IANA</td><td> </td><td class="right"> o <http://tools.ietf.org/wg/httpbis/trac/ticket/148>: "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 <http://tools.ietf.org/wg/httpbis/trac/ticket/149>: "update IANA</td><td> </td><td class="right"> o <http://tools.ietf.org/wg/httpbis/trac/ticket/149>: "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 <http://tools.ietf.org/wg/httpbis/trac/ticket/81>: "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 <http://tools.ietf.org/wg/httpbis/trac/ticket/181>: "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><