source: draft-ietf-httpbis/diffs/draft-ietf-httpbis-p6-cache-15-from-14.diff.html @ 1391

Last change on this file since 1391 was 1326, checked in by julian.reschke@…, 8 years ago

Prepare publication of -15 on 2011-07-11

  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/html; charset=iso-8859-1
File size: 175.3 KB
Line 
1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
2<!-- Generated by rfcdiff 1.38: rfcdiff  --> 
3<!-- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional" > -->
4<html> 
5<head> 
6  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> 
7  <meta http-equiv="Content-Style-Type" content="text/css" /> 
8  <title>Diff: draft-ietf-httpbis-p6-cache-14.txt - draft-ietf-httpbis-p6-cache-15.txt</title> 
9  <style type="text/css"> 
10    body    { margin: 0.4ex; margin-right: auto; } 
11    tr      { } 
12    td      { white-space: pre; font-family: monospace; vertical-align: top; font-size: 0.86em;} 
13    th      { font-size: 0.86em; } 
14    .small  { font-size: 0.6em; font-style: italic; font-family: Verdana, Helvetica, sans-serif; } 
15    .left   { background-color: #EEE; } 
16    .right  { background-color: #FFF; } 
17    .diff   { background-color: #CCF; } 
18    .lblock { background-color: #BFB; } 
19    .rblock { background-color: #FF8; } 
20    .insert { background-color: #8FF; } 
21    .delete { background-color: #ACF; } 
22    .void   { background-color: #FFB; } 
23    .cont   { background-color: #EEE; } 
24    .linebr { background-color: #AAA; } 
25    .lineno { color: red; background-color: #FFF; font-size: 0.7em; text-align: right; padding: 0 2px; } 
26    .elipsis{ background-color: #AAA; } 
27    .left .cont { background-color: #DDD; } 
28    .right .cont { background-color: #EEE; } 
29    .lblock .cont { background-color: #9D9; } 
30    .rblock .cont { background-color: #DD6; } 
31    .insert .cont { background-color: #0DD; } 
32    .delete .cont { background-color: #8AD; } 
33    .stats, .stats td, .stats th { background-color: #EEE; padding: 2px 0; } 
34  </style> 
35</head> 
36<body > 
37  <table border="0" cellpadding="0" cellspacing="0"> 
38  <tr bgcolor="orange"><th></th><th>&nbsp;draft-ietf-httpbis-p6-cache-14.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p6-cache-15.txt&nbsp;</th><th></th></tr> 
39      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
40      <tr><td class="lineno" valign="top"></td><td class="left">HTTPbis Working Group                                   R. Fielding, Ed.</td><td> </td><td class="right">HTTPbis Working Group                                   R. Fielding, Ed.</td><td class="lineno" valign="top"></td></tr>
41      <tr><td class="lineno" valign="top"></td><td class="left">Internet-Draft                                                     Adobe</td><td> </td><td class="right">Internet-Draft                                                     Adobe</td><td class="lineno" valign="top"></td></tr>
42      <tr><td 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                          Alcatel-Lucent</td><td> </td><td class="right">Intended status: Standards Track                          Alcatel-Lucent</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">October 20, 2011</span>                                       J. Mogul</td><td> </td><td class="rblock">Expires: <span class="insert">January 12, 2012</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</td><td> </td><td class="right">                                                                   Adobe</td><td class="lineno" valign="top"></td></tr>
51      <tr><td class="lineno" valign="top"></td><td class="left">                                                                P. Leach</td><td> </td><td class="right">                                                                P. Leach</td><td class="lineno" valign="top"></td></tr>
52      <tr><td class="lineno" valign="top"></td><td class="left">                                                               Microsoft</td><td> </td><td class="right">                                                               Microsoft</td><td class="lineno" valign="top"></td></tr>
53      <tr><td class="lineno" valign="top"></td><td class="left">                                                          T. Berners-Lee</td><td> </td><td class="right">                                                          T. Berners-Lee</td><td class="lineno" valign="top"></td></tr>
54      <tr><td class="lineno" valign="top"></td><td class="left">                                                                 W3C/MIT</td><td> </td><td class="right">                                                                 W3C/MIT</td><td class="lineno" valign="top"></td></tr>
55      <tr><td class="lineno" valign="top"></td><td class="left">                                                           Y. Lafon, Ed.</td><td> </td><td class="right">                                                           Y. Lafon, Ed.</td><td class="lineno" valign="top"></td></tr>
56      <tr><td class="lineno" valign="top"></td><td class="left">                                                                     W3C</td><td> </td><td class="right">                                                                     W3C</td><td class="lineno" valign="top"></td></tr>
57      <tr><td class="lineno" valign="top"></td><td class="left">                                                      M. Nottingham, Ed.</td><td> </td><td class="right">                                                      M. Nottingham, Ed.</td><td class="lineno" valign="top"></td></tr>
58      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
59      <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>
60      <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>
61      <tr><td><a name="diff0002" /></td></tr>
62      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                          <span class="delete">April 18</span>, 2011</td><td> </td><td class="rblock">                                                          <span class="insert"> July 11</span>, 2011</td><td class="lineno" valign="top"></td></tr>
63      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
64      <tr><td class="lineno" valign="top"></td><td class="left">                       HTTP/1.1, part 6: Caching</td><td> </td><td class="right">                       HTTP/1.1, part 6: Caching</td><td class="lineno" valign="top"></td></tr>
65      <tr><td><a name="diff0003" /></td></tr>
66      <tr><td class="lineno" valign="top"></td><td class="lblock">                     draft-ietf-httpbis-p6-cache-1<span class="delete">4</span></td><td> </td><td class="rblock">                     draft-ietf-httpbis-p6-cache-1<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
67      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
68      <tr><td class="lineno" valign="top"></td><td class="left">Abstract</td><td> </td><td class="right">Abstract</td><td class="lineno" valign="top"></td></tr>
69      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
70      <tr><td class="lineno" valign="top"></td><td class="left">   The Hypertext Transfer Protocol (HTTP) is an application-level</td><td> </td><td class="right">   The Hypertext Transfer Protocol (HTTP) is an application-level</td><td class="lineno" valign="top"></td></tr>
71      <tr><td class="lineno" valign="top"></td><td class="left">   protocol for distributed, collaborative, hypermedia information</td><td> </td><td class="right">   protocol for distributed, collaborative, hypermedia information</td><td class="lineno" valign="top"></td></tr>
72      <tr><td class="lineno" valign="top"></td><td class="left">   systems.  This document is Part 6 of the seven-part specification</td><td> </td><td class="right">   systems.  This document is Part 6 of the seven-part specification</td><td class="lineno" valign="top"></td></tr>
73      <tr><td class="lineno" valign="top"></td><td class="left">   that defines the protocol referred to as "HTTP/1.1" and, taken</td><td> </td><td class="right">   that defines the protocol referred to as "HTTP/1.1" and, taken</td><td class="lineno" valign="top"></td></tr>
74      <tr><td class="lineno" valign="top"></td><td class="left">   together, obsoletes RFC 2616.  Part 6 defines requirements on HTTP</td><td> </td><td class="right">   together, obsoletes RFC 2616.  Part 6 defines requirements on HTTP</td><td class="lineno" valign="top"></td></tr>
75      <tr><td class="lineno" valign="top"></td><td class="left">   caches and the associated header fields that control cache behavior</td><td> </td><td class="right">   caches and the associated header fields that control cache behavior</td><td class="lineno" valign="top"></td></tr>
76      <tr><td class="lineno" valign="top"></td><td class="left">   or indicate cacheable response messages.</td><td> </td><td class="right">   or indicate cacheable response messages.</td><td class="lineno" valign="top"></td></tr>
77      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
78      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 1, line 49</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 1, line 49</em></th><td></td></tr>
79      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
80      <tr><td class="lineno" valign="top"></td><td class="left">   Discussion of this draft should take place on the HTTPBIS working</td><td> </td><td class="right">   Discussion of this draft should take place on the HTTPBIS working</td><td class="lineno" valign="top"></td></tr>
81      <tr><td class="lineno" valign="top"></td><td class="left">   group mailing list (ietf-http-wg@w3.org), which is archived at</td><td> </td><td class="right">   group mailing list (ietf-http-wg@w3.org), which is archived at</td><td class="lineno" valign="top"></td></tr>
82      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://lists.w3.org/Archives/Public/ietf-http-wg/&gt;.</td><td> </td><td class="right">   &lt;http://lists.w3.org/Archives/Public/ietf-http-wg/&gt;.</td><td class="lineno" valign="top"></td></tr>
83      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
84      <tr><td class="lineno" valign="top"></td><td class="left">   The current issues list is at</td><td> </td><td class="right">   The current issues list is at</td><td class="lineno" valign="top"></td></tr>
85      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://tools.ietf.org/wg/httpbis/trac/report/3&gt; and related</td><td> </td><td class="right">   &lt;http://tools.ietf.org/wg/httpbis/trac/report/3&gt; and related</td><td class="lineno" valign="top"></td></tr>
86      <tr><td class="lineno" valign="top"></td><td class="left">   documents (including fancy diffs) can be found at</td><td> </td><td class="right">   documents (including fancy diffs) can be found at</td><td class="lineno" valign="top"></td></tr>
87      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</td><td> </td><td class="right">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</td><td class="lineno" valign="top"></td></tr>
88      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></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">   The changes in this draft are summarized in Appendix C.1<span class="delete">5</span>.</td><td> </td><td class="rblock">   The changes in this draft are summarized in Appendix C.1<span class="insert">6</span>.</td><td class="lineno" valign="top"></td></tr>
91      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
92      <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>
93      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
94      <tr><td class="lineno" valign="top"></td><td class="left">   This Internet-Draft is submitted in full conformance with the</td><td> </td><td class="right">   This Internet-Draft is submitted in full conformance with the</td><td class="lineno" valign="top"></td></tr>
95      <tr><td class="lineno" valign="top"></td><td class="left">   provisions of BCP 78 and BCP 79.</td><td> </td><td class="right">   provisions of BCP 78 and BCP 79.</td><td class="lineno" valign="top"></td></tr>
96      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
97      <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>
98      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF).  Note that other groups may also distribute</td><td> </td><td class="right">   Task Force (IETF).  Note that other groups may also distribute</td><td class="lineno" valign="top"></td></tr>
99      <tr><td class="lineno" valign="top"></td><td class="left">   working documents as Internet-Drafts.  The list of current Internet-</td><td> </td><td class="right">   working documents as Internet-Drafts.  The list of current Internet-</td><td class="lineno" valign="top"></td></tr>
100      <tr><td class="lineno" valign="top"></td><td class="left">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td> </td><td class="right">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td class="lineno" valign="top"></td></tr>
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 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>
103      <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>
104      <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>
105      <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>
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><a name="diff0005" /></td></tr>
108      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">October 20, 2011</span>.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">January 12, 2012</span>.</td><td class="lineno" valign="top"></td></tr>
109      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
110      <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>
111      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
112      <tr><td class="lineno" valign="top"></td><td class="left">   Copyright (c) 2011 IETF Trust and the persons identified as the</td><td> </td><td class="right">   Copyright (c) 2011 IETF Trust and the persons identified as the</td><td class="lineno" valign="top"></td></tr>
113      <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>
114      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
115      <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>
116      <tr><td class="lineno" valign="top"></td><td class="left">   Provisions Relating to IETF Documents</td><td> </td><td class="right">   Provisions Relating to IETF Documents</td><td class="lineno" valign="top"></td></tr>
117      <tr><td class="lineno" valign="top"></td><td class="left">   (http://trustee.ietf.org/license-info) in effect on the date of</td><td> </td><td class="right">   (http://trustee.ietf.org/license-info) in effect on the date of</td><td class="lineno" valign="top"></td></tr>
118      <tr><td class="lineno" valign="top"></td><td class="left">   publication of this document.  Please review these documents</td><td> </td><td class="right">   publication of this document.  Please review these documents</td><td class="lineno" valign="top"></td></tr>
119      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
120      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 3, line 10</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 3, line 10</em></th><td></td></tr>
121      <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>
122      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
123      <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>
124      <tr><td class="lineno" valign="top"></td><td class="left">     1.1.  Purpose  . . . . . . . . . . . . . . . . . . . . . . . . .  5</td><td> </td><td class="right">     1.1.  Purpose  . . . . . . . . . . . . . . . . . . . . . . . . .  5</td><td class="lineno" valign="top"></td></tr>
125      <tr><td class="lineno" valign="top"></td><td class="left">     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5</td><td> </td><td class="right">     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5</td><td class="lineno" valign="top"></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="left">     1.3.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">     1.3.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="left">     1.4.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">     1.4.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="left">       1.4.1.  Core Rules . . . . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">       1.4.1.  Core Rules . . . . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
129      <tr><td class="lineno" valign="top"></td><td class="left">       1.4.2.  ABNF Rules defined in other Parts of the</td><td> </td><td class="right">       1.4.2.  ABNF Rules defined in other Parts of the</td><td class="lineno" valign="top"></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="left">               Specification  . . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">               Specification  . . . . . . . . . . . . . . . . . . . .  7</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"></td><td> </td><td class="rblock"><span class="insert">     1.5.  Delta Seconds  . . . . . . . . . . . . . . . . . . . . . .  8</span></td><td class="lineno" valign="top"></td></tr>
133      <tr><td class="lineno" valign="top"></td><td class="left">   2.  Cache Operation  . . . . . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="right">   2.  Cache Operation  . . . . . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
134      <tr><td class="lineno" valign="top"></td><td class="left">     2.1.  Response Cacheability  . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="right">     2.1.  Response Cacheability  . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
135      <tr><td class="lineno" valign="top"></td><td class="left">       2.1.1.  Storing Partial and Incomplete Responses . . . . . . .  9</td><td> </td><td class="right">       2.1.1.  Storing Partial and Incomplete Responses . . . . . . .  9</td><td class="lineno" valign="top"></td></tr>
136      <tr><td class="lineno" valign="top"></td><td class="left">     2.2.  Constructing Responses from Caches . . . . . . . . . . . .  9</td><td> </td><td class="right">     2.2.  Constructing Responses from Caches . . . . . . . . . . . .  9</td><td class="lineno" valign="top"></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="left">     2.3.  Freshness Model  . . . . . . . . . . . . . . . . . . . . . 10</td><td> </td><td class="right">     2.3.  Freshness Model  . . . . . . . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
138      <tr><td class="lineno" valign="top"></td><td class="left">       2.3.1.  Calculating Freshness Lifetime . . . . . . . . . . . . 11</td><td> </td><td class="right">       2.3.1.  Calculating Freshness Lifetime . . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
139      <tr><td class="lineno" valign="top"></td><td class="left">       2.3.2.  Calculating Age  . . . . . . . . . . . . . . . . . . . 12</td><td> </td><td class="right">       2.3.2.  Calculating Age  . . . . . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
140      <tr><td><a name="diff0007" /></td></tr>
141      <tr><td class="lineno" valign="top"></td><td class="lblock">       2.3.3.  Serving Stale Responses  . . . . . . . . . . . . . . . 1<span class="delete">3</span></td><td> </td><td class="rblock">       2.3.3.  Serving Stale Responses  . . . . . . . . . . . . . . . 1<span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
142      <tr><td class="lineno" valign="top"></td><td class="left">     2.4.  Validation Model . . . . . . . . . . . . . . . . . . . . . 14</td><td> </td><td class="right">     2.4.  Validation Model . . . . . . . . . . . . . . . . . . . . . 14</td><td class="lineno" valign="top"></td></tr>
143      <tr><td class="lineno" valign="top"></td><td class="left">     2.5.  Request Methods that Invalidate  . . . . . . . . . . . . . 15</td><td> </td><td class="right">     2.5.  Request Methods that Invalidate  . . . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
144      <tr><td><a name="diff0008" /></td></tr>
145      <tr><td class="lineno" valign="top"></td><td class="lblock">     2.6.  Shared Caching of Authenticated Responses  . . . . . . . . 1<span class="delete">5</span></td><td> </td><td class="rblock">     2.6.  Shared Caching of Authenticated Responses  . . . . . . . . 1<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
146      <tr><td class="lineno" valign="top"></td><td class="left">     2.7.  Caching Negotiated Responses . . . . . . . . . . . . . . . 16</td><td> </td><td class="right">     2.7.  Caching Negotiated Responses . . . . . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
147      <tr><td class="lineno" valign="top"></td><td class="left">     2.8.  Combining Responses  . . . . . . . . . . . . . . . . . . . 17</td><td> </td><td class="right">     2.8.  Combining Responses  . . . . . . . . . . . . . . . . . . . 17</td><td class="lineno" valign="top"></td></tr>
148      <tr><td><a name="diff0009" /></td></tr>
149      <tr><td class="lineno" valign="top"></td><td class="lblock">   3.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 1<span class="delete">7</span></td><td> </td><td class="rblock">   3.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 1<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
150      <tr><td class="lineno" valign="top"></td><td class="left">     3.1.  Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 18</td><td> </td><td class="right">     3.1.  Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 18</td><td class="lineno" valign="top"></td></tr>
151      <tr><td class="lineno" valign="top"></td><td class="left">     3.2.  Cache-Control  . . . . . . . . . . . . . . . . . . . . . . 18</td><td> </td><td class="right">     3.2.  Cache-Control  . . . . . . . . . . . . . . . . . . . . . . 18</td><td class="lineno" valign="top"></td></tr>
152      <tr><td class="lineno" valign="top"></td><td class="left">       3.2.1.  Request Cache-Control Directives . . . . . . . . . . . 19</td><td> </td><td class="right">       3.2.1.  Request Cache-Control Directives . . . . . . . . . . . 19</td><td class="lineno" valign="top"></td></tr>
153      <tr><td class="lineno" valign="top"></td><td class="left">       3.2.2.  Response Cache-Control Directives  . . . . . . . . . . 21</td><td> </td><td class="right">       3.2.2.  Response Cache-Control Directives  . . . . . . . . . . 21</td><td class="lineno" valign="top"></td></tr>
154      <tr><td class="lineno" valign="top"></td><td class="left">       3.2.3.  Cache Control Extensions . . . . . . . . . . . . . . . 23</td><td> </td><td class="right">       3.2.3.  Cache Control Extensions . . . . . . . . . . . . . . . 23</td><td class="lineno" valign="top"></td></tr>
155      <tr><td class="lineno" valign="top"></td><td class="left">     3.3.  Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 24</td><td> </td><td class="right">     3.3.  Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 24</td><td class="lineno" valign="top"></td></tr>
156      <tr><td class="lineno" valign="top"></td><td class="left">     3.4.  Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 25</td><td> </td><td class="right">     3.4.  Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 25</td><td class="lineno" valign="top"></td></tr>
157      <tr><td class="lineno" valign="top"></td><td class="left">     3.5.  Vary . . . . . . . . . . . . . . . . . . . . . . . . . . . 26</td><td> </td><td class="right">     3.5.  Vary . . . . . . . . . . . . . . . . . . . . . . . . . . . 26</td><td class="lineno" valign="top"></td></tr>
158      <tr><td><a name="diff0010" /></td></tr>
159      <tr><td class="lineno" valign="top"></td><td class="lblock">     3.6.  Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 2<span class="delete">6</span></td><td> </td><td class="rblock">     3.6.  Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 2<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
160      <tr><td class="lineno" valign="top"></td><td class="left">   4.  History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 29</td><td> </td><td class="right">   4.  History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 29</td><td class="lineno" valign="top"></td></tr>
161      <tr><td class="lineno" valign="top"></td><td class="left">   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 29</td><td> </td><td class="right">   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 29</td><td class="lineno" valign="top"></td></tr>
162      <tr><td class="lineno" valign="top"></td><td class="left">     5.1.  Cache Directive Registry . . . . . . . . . . . . . . . . . 29</td><td> </td><td class="right">     5.1.  Cache Directive Registry . . . . . . . . . . . . . . . . . 29</td><td class="lineno" valign="top"></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="left">     5.2.  Header Field Registration  . . . . . . . . . . . . . . . . 30</td><td> </td><td class="right">     5.2.  Header Field Registration  . . . . . . . . . . . . . . . . 30</td><td class="lineno" valign="top"></td></tr>
164      <tr><td class="lineno" valign="top"></td><td class="left">   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 30</td><td> </td><td class="right">   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 30</td><td class="lineno" valign="top"></td></tr>
165      <tr><td class="lineno" valign="top"></td><td class="left">   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 31</td><td> </td><td class="right">   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="left">   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 31</td><td> </td><td class="right">   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
167      <tr><td class="lineno" valign="top"></td><td class="left">     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 31</td><td> </td><td class="right">     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="left">     8.2.  Informative References . . . . . . . . . . . . . . . . . . 32</td><td> </td><td class="right">     8.2.  Informative References . . . . . . . . . . . . . . . . . . 32</td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix A.  Changes from RFC 2616 . . . . . . . . . . . . . . . . 32</td><td> </td><td class="right">   Appendix A.  Changes from RFC 2616 . . . . . . . . . . . . . . . . 32</td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
171      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 4, line 13</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 4, line 14</em></th><td></td></tr>
172      <tr><td class="lineno" valign="top"></td><td class="left">     C.6.  Since draft-ietf-httpbis-p6-cache-04 . . . . . . . . . . . 35</td><td> </td><td class="right">     C.6.  Since draft-ietf-httpbis-p6-cache-04 . . . . . . . . . . . 35</td><td class="lineno" valign="top"></td></tr>
173      <tr><td class="lineno" valign="top"></td><td class="left">     C.7.  Since draft-ietf-httpbis-p6-cache-05 . . . . . . . . . . . 36</td><td> </td><td class="right">     C.7.  Since draft-ietf-httpbis-p6-cache-05 . . . . . . . . . . . 36</td><td class="lineno" valign="top"></td></tr>
174      <tr><td class="lineno" valign="top"></td><td class="left">     C.8.  Since draft-ietf-httpbis-p6-cache-06 . . . . . . . . . . . 36</td><td> </td><td class="right">     C.8.  Since draft-ietf-httpbis-p6-cache-06 . . . . . . . . . . . 36</td><td class="lineno" valign="top"></td></tr>
175      <tr><td class="lineno" valign="top"></td><td class="left">     C.9.  Since draft-ietf-httpbis-p6-cache-07 . . . . . . . . . . . 36</td><td> </td><td class="right">     C.9.  Since draft-ietf-httpbis-p6-cache-07 . . . . . . . . . . . 36</td><td class="lineno" valign="top"></td></tr>
176      <tr><td class="lineno" valign="top"></td><td class="left">     C.10. Since draft-ietf-httpbis-p6-cache-08 . . . . . . . . . . . 37</td><td> </td><td class="right">     C.10. Since draft-ietf-httpbis-p6-cache-08 . . . . . . . . . . . 37</td><td class="lineno" valign="top"></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="left">     C.11. Since draft-ietf-httpbis-p6-cache-09 . . . . . . . . . . . 37</td><td> </td><td class="right">     C.11. Since draft-ietf-httpbis-p6-cache-09 . . . . . . . . . . . 37</td><td class="lineno" valign="top"></td></tr>
178      <tr><td class="lineno" valign="top"></td><td class="left">     C.12. Since draft-ietf-httpbis-p6-cache-10 . . . . . . . . . . . 38</td><td> </td><td class="right">     C.12. Since draft-ietf-httpbis-p6-cache-10 . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
179      <tr><td class="lineno" valign="top"></td><td class="left">     C.13. Since draft-ietf-httpbis-p6-cache-11 . . . . . . . . . . . 38</td><td> </td><td class="right">     C.13. Since draft-ietf-httpbis-p6-cache-11 . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
180      <tr><td class="lineno" valign="top"></td><td class="left">     C.14. Since draft-ietf-httpbis-p6-cache-12 . . . . . . . . . . . 38</td><td> </td><td class="right">     C.14. Since draft-ietf-httpbis-p6-cache-12 . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
181      <tr><td class="lineno" valign="top"></td><td class="left">     C.15. Since draft-ietf-httpbis-p6-cache-13 . . . . . . . . . . . 38</td><td> </td><td class="right">     C.15. Since draft-ietf-httpbis-p6-cache-13 . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
182      <tr><td><a name="diff0011" /></td></tr>
183      <tr><td class="lineno" valign="top"></td><td class="lblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">38</span></td><td> </td><td class="rblock">     <span class="insert">C.16. Since draft-ietf-httpbis-p6-cache-14 . . . . . . . . . . . 38</span></td><td class="lineno" valign="top"></td></tr>
184      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
185      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
186      <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>
187      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
188      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP is typically used for distributed information systems, where</td><td> </td><td class="right">   HTTP is typically used for distributed information systems, where</td><td class="lineno" valign="top"></td></tr>
189      <tr><td class="lineno" valign="top"></td><td class="left">   performance can be improved by the use of response caches.  This</td><td> </td><td class="right">   performance can be improved by the use of response caches.  This</td><td class="lineno" valign="top"></td></tr>
190      <tr><td class="lineno" valign="top"></td><td class="left">   document defines aspects of HTTP/1.1 related to caching and reusing</td><td> </td><td class="right">   document defines aspects of HTTP/1.1 related to caching and reusing</td><td class="lineno" valign="top"></td></tr>
191      <tr><td class="lineno" valign="top"></td><td class="left">   response messages.</td><td> </td><td class="right">   response messages.</td><td class="lineno" valign="top"></td></tr>
192      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
193      <tr><td class="lineno" valign="top"></td><td class="left">1.1.  Purpose</td><td> </td><td class="right">1.1.  Purpose</td><td class="lineno" valign="top"></td></tr>
194      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
195      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
196      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 7, line 48</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 7, line 48</em></th><td></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="left">     quoted-string = &lt;quoted-string, defined in [Part1], Section 1.2.2&gt;</td><td> </td><td class="right">     quoted-string = &lt;quoted-string, defined in [Part1], Section 1.2.2&gt;</td><td class="lineno" valign="top"></td></tr>
198      <tr><td class="lineno" valign="top"></td><td class="left">     token         = &lt;token, defined in [Part1], Section 1.2.2&gt;</td><td> </td><td class="right">     token         = &lt;token, defined in [Part1], Section 1.2.2&gt;</td><td class="lineno" valign="top"></td></tr>
199      <tr><td class="lineno" valign="top"></td><td class="left">     OWS           = &lt;OWS, defined in [Part1], Section 1.2.2&gt;</td><td> </td><td class="right">     OWS           = &lt;OWS, defined in [Part1], Section 1.2.2&gt;</td><td class="lineno" valign="top"></td></tr>
200      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="left">1.4.2.  ABNF Rules defined in other Parts of the Specification</td><td> </td><td class="right">1.4.2.  ABNF Rules defined in other Parts of the Specification</td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
203      <tr><td class="lineno" valign="top"></td><td class="left">   The ABNF rules below are defined in other parts:</td><td> </td><td class="right">   The ABNF rules below are defined in other parts:</td><td class="lineno" valign="top"></td></tr>
204      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="left">     field-name    = &lt;field-name, defined in [Part1], Section 3.2&gt;</td><td> </td><td class="right">     field-name    = &lt;field-name, defined in [Part1], Section 3.2&gt;</td><td class="lineno" valign="top"></td></tr>
206      <tr><td class="lineno" valign="top"></td><td class="left">     HTTP-date     = &lt;HTTP-date, defined in [Part1], Section 6.1&gt;</td><td> </td><td class="right">     HTTP-date     = &lt;HTTP-date, defined in [Part1], Section 6.1&gt;</td><td class="lineno" valign="top"></td></tr>
207      <tr><td><a name="diff0012" /></td></tr>
208      <tr><td class="lineno" valign="top"></td><td class="lblock">     port          = &lt;port, defined in [Part1], Section 2.<span class="delete">6</span>&gt;</td><td> </td><td class="rblock">     port          = &lt;port, defined in [Part1], Section 2.<span class="insert">7</span>&gt;</td><td class="lineno" valign="top"></td></tr>
209      <tr><td class="lineno" valign="top"></td><td class="left">     pseudonym     = &lt;pseudonym, defined in [Part1], Section 9.9&gt;</td><td> </td><td class="right">     pseudonym     = &lt;pseudonym, defined in [Part1], Section 9.9&gt;</td><td class="lineno" valign="top"></td></tr>
210      <tr><td><a name="diff0013" /></td></tr>
211      <tr><td class="lineno" valign="top"></td><td class="lblock">     uri-host      = &lt;uri-host, defined in [Part1], Section <span class="delete">2.6&gt;</span></td><td> </td><td class="rblock">     uri-host      = &lt;uri-host, defined in [Part1], Section <span class="insert">2.7&gt;</span></td><td class="lineno" valign="top"></td></tr>
212      <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>
213      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">1.5.  Delta Seconds</span></td><td class="lineno" valign="top"></td></tr>
214      <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>
215      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   The delta-seconds rule specifies a non-negative integer, representing</span></td><td class="lineno" valign="top"></td></tr>
216      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   time in seconds.</span></td><td class="lineno" valign="top"></td></tr>
217      <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>
218      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     delta-seconds  = 1*DIGIT</span></td><td class="lineno" valign="top"></td></tr>
219      <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>
220      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   If an implementation receives a delta-seconds value larger than the</span></td><td class="lineno" valign="top"></td></tr>
221      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   largest positive integer it can represent, or if any of its</span></td><td class="lineno" valign="top"></td></tr>
222      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   subsequent calculations overflows, it MUST consider the value to be</span></td><td class="lineno" valign="top"></td></tr>
223      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   2147483648 (2^31).  Recipients parsing a delta-seconds value SHOULD</span></td><td class="lineno" valign="top"></td></tr>
224      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   use an arithmetic type of at least 31 bits of range, and senders MUST</span></td><td class="lineno" valign="top"></td></tr>
225      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   NOT send delta-seconds with a value greater than 2147483648.</span></td><td class="lineno" valign="top"></td></tr>
226      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
227      <tr><td class="lineno" valign="top"></td><td class="left">2.  Cache Operation</td><td> </td><td class="right">2.  Cache Operation</td><td class="lineno" valign="top"></td></tr>
228      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
229      <tr><td class="lineno" valign="top"></td><td class="left">2.1.  Response Cacheability</td><td> </td><td class="right">2.1.  Response Cacheability</td><td class="lineno" valign="top"></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno" valign="top"></td><td class="left">   A cache MUST NOT store a response to any request, unless:</td><td> </td><td class="right">   A cache MUST NOT store a response to any request, unless:</td><td class="lineno" valign="top"></td></tr>
232      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
233      <tr><td class="lineno" valign="top"></td><td class="left">   o  The request method is understood by the cache and defined as being</td><td> </td><td class="right">   o  The request method is understood by the cache and defined as being</td><td class="lineno" valign="top"></td></tr>
234      <tr><td class="lineno" valign="top"></td><td class="left">      cacheable, and</td><td> </td><td class="right">      cacheable, and</td><td class="lineno" valign="top"></td></tr>
235      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
236      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
237      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 8, line 42</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 9, line 8</em></th><td></td></tr>
238      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
239      <tr><td class="lineno" valign="top"></td><td class="left">      *  contains a s-maxage response cache directive and the cache is</td><td> </td><td class="right">      *  contains a s-maxage response cache directive and the cache is</td><td class="lineno" valign="top"></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="left">         shared, or</td><td> </td><td class="right">         shared, or</td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
242      <tr><td class="lineno" valign="top"></td><td class="left">      *  contains a Cache Control Extension (see Section 3.2.3) that</td><td> </td><td class="right">      *  contains a Cache Control Extension (see Section 3.2.3) that</td><td class="lineno" valign="top"></td></tr>
243      <tr><td class="lineno" valign="top"></td><td class="left">         allows it to be cached, or</td><td> </td><td class="right">         allows it to be cached, or</td><td class="lineno" valign="top"></td></tr>
244      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
245      <tr><td class="lineno" valign="top"></td><td class="left">      *  has a status code that can be served with heuristic freshness</td><td> </td><td class="right">      *  has a status code that can be served with heuristic freshness</td><td class="lineno" valign="top"></td></tr>
246      <tr><td class="lineno" valign="top"></td><td class="left">         (see Section 2.3.1.1).</td><td> </td><td class="right">         (see Section 2.3.1.1).</td><td class="lineno" valign="top"></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
248      <tr><td><a name="diff0014" /></td></tr>
249      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">Note that any of the requirements listed above can be overridden by a</span></td><td class="lineno" valign="top"></td></tr>
250      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   cache-control extension; see Section 3.2.3.</span></td><td class="lineno" valign="top"></td></tr>
251      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
252      <tr><td class="lineno" valign="top"></td><td class="left">   In this context, a cache has "understood" a request method or a</td><td> </td><td class="right">   In this context, a cache has "understood" a request method or a</td><td class="lineno" valign="top"></td></tr>
253      <tr><td class="lineno" valign="top"></td><td class="left">   response status code if it recognises it and implements any cache-</td><td> </td><td class="right">   response status code if it recognises it and implements any cache-</td><td class="lineno" valign="top"></td></tr>
254      <tr><td><a name="diff0015" /></td></tr>
255      <tr><td class="lineno" valign="top"></td><td class="lblock">   specific behavio<span class="delete">u</span>r.  In particular, 206 Partial Content responses</td><td> </td><td class="rblock">   specific behavior.  In particular, 206 Partial Content responses</td><td class="lineno" valign="top"></td></tr>
256      <tr><td class="lineno" valign="top"></td><td class="left">   cannot be cached by an implementation that does not handle partial</td><td> </td><td class="right">   cannot be cached by an implementation that does not handle partial</td><td class="lineno" valign="top"></td></tr>
257      <tr><td class="lineno" valign="top"></td><td class="left">   content (see Section 2.1.1).</td><td> </td><td class="right">   content (see Section 2.1.1).</td><td class="lineno" valign="top"></td></tr>
258      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
259      <tr><td class="lineno" valign="top"></td><td class="left">   Note that in normal operation, most caches will not store a response</td><td> </td><td class="right">   Note that in normal operation, most caches will not store a response</td><td class="lineno" valign="top"></td></tr>
260      <tr><td class="lineno" valign="top"></td><td class="left">   that has neither a cache validator nor an explicit expiration time,</td><td> </td><td class="right">   that has neither a cache validator nor an explicit expiration time,</td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="left">   as such responses are not usually useful to store.  However, caches</td><td> </td><td class="right">   as such responses are not usually useful to store.  However, caches</td><td class="lineno" valign="top"></td></tr>
262      <tr><td class="lineno" valign="top"></td><td class="left">   are not prohibited from storing such responses.</td><td> </td><td class="right">   are not prohibited from storing such responses.</td><td class="lineno" valign="top"></td></tr>
263      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
264      <tr><td class="lineno" valign="top"></td><td class="left">2.1.1.  Storing Partial and Incomplete Responses</td><td> </td><td class="right">2.1.1.  Storing Partial and Incomplete Responses</td><td class="lineno" valign="top"></td></tr>
265      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
267      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 9, line 44</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 10, line 13</em></th><td></td></tr>
268      <tr><td class="lineno" valign="top"></td><td class="left">      that would prevent its use (see Section 3.2 and Section 3.4), and</td><td> </td><td class="right">      that would prevent its use (see Section 3.2 and Section 3.4), and</td><td class="lineno" valign="top"></td></tr>
269      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
270      <tr><td class="lineno" valign="top"></td><td class="left">   o  the stored response is either:</td><td> </td><td class="right">   o  the stored response is either:</td><td class="lineno" valign="top"></td></tr>
271      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
272      <tr><td class="lineno" valign="top"></td><td class="left">      *  fresh (see Section 2.3), or</td><td> </td><td class="right">      *  fresh (see Section 2.3), or</td><td class="lineno" valign="top"></td></tr>
273      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
274      <tr><td class="lineno" valign="top"></td><td class="left">      *  allowed to be served stale (see Section 2.3.3), or</td><td> </td><td class="right">      *  allowed to be served stale (see Section 2.3.3), or</td><td class="lineno" valign="top"></td></tr>
275      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
276      <tr><td class="lineno" valign="top"></td><td class="left">      *  successfully validated (see Section 2.4).</td><td> </td><td class="right">      *  successfully validated (see Section 2.4).</td><td class="lineno" valign="top"></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
278      <tr><td><a name="diff0016" /></td></tr>
279      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">Note that any of the requirements listed above can be overridden by a</span></td><td class="lineno" valign="top"></td></tr>
280      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   cache-control extension; see Section 3.2.3.</span></td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno" valign="top"></td><td class="left">   When a stored response is used to satisfy a request without</td><td> </td><td class="right">   When a stored response is used to satisfy a request without</td><td class="lineno" valign="top"></td></tr>
283      <tr><td class="lineno" valign="top"></td><td class="left">   validation, a cache MUST include a single Age header field</td><td> </td><td class="right">   validation, a cache MUST include a single Age header field</td><td class="lineno" valign="top"></td></tr>
284      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 3.1) in the response with a value equal to the stored</td><td> </td><td class="right">   (Section 3.1) in the response with a value equal to the stored</td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="left">   response's current_age; see Section 2.3.2.</td><td> </td><td class="right">   response's current_age; see Section 2.3.2.</td><td class="lineno" valign="top"></td></tr>
286      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
287      <tr><td class="lineno" valign="top"></td><td class="left">   A cache MUST write through requests with methods that are unsafe</td><td> </td><td class="right">   A cache MUST write through requests with methods that are unsafe</td><td class="lineno" valign="top"></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 7.1.1 of [Part2]) to the origin server; i.e., a cache must</td><td> </td><td class="right">   (Section 7.1.1 of [Part2]) to the origin server; i.e., a cache must</td><td class="lineno" valign="top"></td></tr>
289      <tr><td class="lineno" valign="top"></td><td class="left">   not generate a reply to such a request before having forwarded the</td><td> </td><td class="right">   not generate a reply to such a request before having forwarded the</td><td class="lineno" valign="top"></td></tr>
290      <tr><td class="lineno" valign="top"></td><td class="left">   request and having received a corresponding response.</td><td> </td><td class="right">   request and having received a corresponding response.</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">   Also, note that unsafe requests might invalidate already stored</td><td> </td><td class="right">   Also, note that unsafe requests might invalidate already stored</td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="left">   responses; see Section 2.5.</td><td> </td><td class="right">   responses; see Section 2.5.</td><td class="lineno" valign="top"></td></tr>
294      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
295      <tr><td><a name="diff0017" /></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">A</span> cache MUST use the most recent response (as determined by the Date</td><td> </td><td class="rblock">   <span class="insert">When more than one suitable response is stored, a</span> cache MUST use the</td><td class="lineno" valign="top"></td></tr>
297      <tr><td class="lineno" valign="top"></td><td class="lblock">   header <span class="delete">field) when more than one suitable response is stored.</span>  It can</td><td> </td><td class="rblock">   most recent response (as determined by the Date header <span class="insert">field).</span>  It</td><td class="lineno" valign="top"></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="lblock">   also forward a request with "Cache-Control: max-age=0" or "Cache-</td><td> </td><td class="rblock">   can also forward a request with "Cache-Control: max-age=0" or "Cache-</td><td class="lineno" valign="top"></td></tr>
299      <tr><td class="lineno" valign="top"></td><td class="left">   Control: no-cache" to disambiguate which response to use.</td><td> </td><td class="right">   Control: no-cache" to disambiguate which response to use.</td><td class="lineno" valign="top"></td></tr>
300      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
301      <tr><td class="lineno" valign="top"></td><td class="left">   A cache that does not have a clock available MUST NOT use stored</td><td> </td><td class="right">   A cache that does not have a clock available MUST NOT use stored</td><td class="lineno" valign="top"></td></tr>
302      <tr><td class="lineno" valign="top"></td><td class="left">   responses without revalidating them on every use.  A cache,</td><td> </td><td class="right">   responses without revalidating them on every use.  A cache,</td><td class="lineno" valign="top"></td></tr>
303      <tr><td class="lineno" valign="top"></td><td class="left">   especially a shared cache, SHOULD use a mechanism, such as NTP</td><td> </td><td class="right">   especially a shared cache, SHOULD use a mechanism, such as NTP</td><td class="lineno" valign="top"></td></tr>
304      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC1305], to synchronize its clock with a reliable external</td><td> </td><td class="right">   [RFC1305], to synchronize its clock with a reliable external</td><td class="lineno" valign="top"></td></tr>
305      <tr><td class="lineno" valign="top"></td><td class="left">   standard.</td><td> </td><td class="right">   standard.</td><td class="lineno" valign="top"></td></tr>
306      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
307      <tr><td class="lineno" valign="top"></td><td class="left">2.3.  Freshness Model</td><td> </td><td class="right">2.3.  Freshness Model</td><td class="lineno" valign="top"></td></tr>
308      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
309      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
310      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 11, line 10</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 11, line 30</em></th><td></td></tr>
311      <tr><td class="lineno" valign="top"></td><td class="left">      response_is_fresh = (freshness_lifetime &gt; current_age)</td><td> </td><td class="right">      response_is_fresh = (freshness_lifetime &gt; current_age)</td><td class="lineno" valign="top"></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno" valign="top"></td><td class="left">   The freshness_lifetime is defined in Section 2.3.1; the current_age</td><td> </td><td class="right">   The freshness_lifetime is defined in Section 2.3.1; the current_age</td><td class="lineno" valign="top"></td></tr>
314      <tr><td class="lineno" valign="top"></td><td class="left">   is defined in Section 2.3.2.</td><td> </td><td class="right">   is defined in Section 2.3.2.</td><td class="lineno" valign="top"></td></tr>
315      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
316      <tr><td class="lineno" valign="top"></td><td class="left">   Additionally, clients might need to influence freshness calculation.</td><td> </td><td class="right">   Additionally, clients might need to influence freshness calculation.</td><td class="lineno" valign="top"></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="left">   They can do this using several request cache directives, with the</td><td> </td><td class="right">   They can do this using several request cache directives, with the</td><td class="lineno" valign="top"></td></tr>
318      <tr><td class="lineno" valign="top"></td><td class="left">   effect of either increasing or loosening constraints on freshness.</td><td> </td><td class="right">   effect of either increasing or loosening constraints on freshness.</td><td class="lineno" valign="top"></td></tr>
319      <tr><td class="lineno" valign="top"></td><td class="left">   See Section 3.2.1.</td><td> </td><td class="right">   See Section 3.2.1.</td><td class="lineno" valign="top"></td></tr>
320      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
321      <tr><td><a name="diff0018" /></td></tr>
322      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">[[ISSUE-no-req-for-directives: there are not requirements directly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   applying to cache-request-directives and freshness.]]</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
325      <tr><td class="lineno" valign="top"></td><td class="left">   Note that freshness applies only to cache operation; it cannot be</td><td> </td><td class="right">   Note that freshness applies only to cache operation; it cannot be</td><td class="lineno" valign="top"></td></tr>
326      <tr><td class="lineno" valign="top"></td><td class="left">   used to force a user agent to refresh its display or reload a</td><td> </td><td class="right">   used to force a user agent to refresh its display or reload a</td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="left">   resource.  See Section 4 for an explanation of the difference between</td><td> </td><td class="right">   resource.  See Section 4 for an explanation of the difference between</td><td class="lineno" valign="top"></td></tr>
328      <tr><td class="lineno" valign="top"></td><td class="left">   caches and history mechanisms.</td><td> </td><td class="right">   caches and history mechanisms.</td><td class="lineno" valign="top"></td></tr>
329      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
330      <tr><td class="lineno" valign="top"></td><td class="left">2.3.1.  Calculating Freshness Lifetime</td><td> </td><td class="right">2.3.1.  Calculating Freshness Lifetime</td><td class="lineno" valign="top"></td></tr>
331      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
332      <tr><td class="lineno" valign="top"></td><td class="left">   A cache can calculate the freshness lifetime (denoted as</td><td> </td><td class="right">   A cache can calculate the freshness lifetime (denoted as</td><td class="lineno" valign="top"></td></tr>
333      <tr><td class="lineno" valign="top"></td><td class="left">   freshness_lifetime) of a response by using the first match of:</td><td> </td><td class="right">   freshness_lifetime) of a response by using the first match of:</td><td class="lineno" valign="top"></td></tr>
334      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
335      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
336      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 15, line 13</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 15, line 33</em></th><td></td></tr>
337      <tr><td class="lineno" valign="top"></td><td class="left">   suitable.  Instead, a cache SHOULD use the full response to satisfy</td><td> </td><td class="right">   suitable.  Instead, a cache SHOULD use the full response to satisfy</td><td class="lineno" valign="top"></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="left">   the request and MAY replace the stored response.</td><td> </td><td class="right">   the request and MAY replace the stored response.</td><td class="lineno" valign="top"></td></tr>
339      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
340      <tr><td class="lineno" valign="top"></td><td class="left">   If a cache receives a 5xx response while attempting to validate a</td><td> </td><td class="right">   If a cache receives a 5xx response while attempting to validate a</td><td class="lineno" valign="top"></td></tr>
341      <tr><td class="lineno" valign="top"></td><td class="left">   response, it MAY either forward this response to the requesting</td><td> </td><td class="right">   response, it MAY either forward this response to the requesting</td><td class="lineno" valign="top"></td></tr>
342      <tr><td class="lineno" valign="top"></td><td class="left">   client, or act as if the server failed to respond.  In the latter</td><td> </td><td class="right">   client, or act as if the server failed to respond.  In the latter</td><td class="lineno" valign="top"></td></tr>
343      <tr><td class="lineno" valign="top"></td><td class="left">   case, it MAY return a previously stored response (see Section 2.3.3).</td><td> </td><td class="right">   case, it MAY return a previously stored response (see Section 2.3.3).</td><td class="lineno" valign="top"></td></tr>
344      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
345      <tr><td class="lineno" valign="top"></td><td class="left">2.5.  Request Methods that Invalidate</td><td> </td><td class="right">2.5.  Request Methods that Invalidate</td><td class="lineno" valign="top"></td></tr>
346      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
347      <tr><td><a name="diff0019" /></td></tr>
348      <tr><td class="lineno" valign="top"></td><td class="lblock">   Because unsafe request methods (Section 7.1.1 of [Part2]) have the</td><td> </td><td class="rblock">   Because unsafe request methods (Section 7.1.1 of [Part2]) <span class="insert">such as</span></td><td class="lineno" valign="top"></td></tr>
349      <tr><td class="lineno" valign="top"></td><td class="lblock">   potential for changing state on the origin server, intervening caches</td><td> </td><td class="rblock"><span class="insert">   PUT, POST or DELETE</span> have the potential for changing state on the</td><td class="lineno" valign="top"></td></tr>
350      <tr><td class="lineno" valign="top"></td><td class="lblock">   can use them to keep their contents up-to-date.</td><td> </td><td class="rblock">   origin server, intervening caches can use them to keep their contents</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">   up-to-date.</td><td class="lineno" valign="top"></td></tr>
352      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
353      <tr><td class="lineno" valign="top"></td><td class="left">   A cache MUST invalidate the effective Request URI (Section 4.3 of</td><td> </td><td class="right">   A cache MUST invalidate the effective Request URI (Section 4.3 of</td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="left">   [Part1]) as well as the URI(s) in the Location and Content-Location</td><td> </td><td class="right">   [Part1]) as well as the URI(s) in the Location and Content-Location</td><td class="lineno" valign="top"></td></tr>
355      <tr><td><a name="diff0020" /></td></tr>
356      <tr><td class="lineno" valign="top"></td><td class="lblock">   header fields (if present) when <span class="delete">the following</span> request <span class="delete">methods are</span></td><td> </td><td class="rblock">   header fields (if present) when <span class="insert">a non-error response to a</span> request</td><td class="lineno" valign="top"></td></tr>
357      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   received:</span></td><td> </td><td class="rblock">   <span class="insert">with an unsafe method is received.</span></td><td class="lineno" valign="top"></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  PUT</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
360      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
361      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  DELETE</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
362      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  POST</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
365      <tr><td class="lineno" valign="top"></td><td class="left">   However, a cache MUST NOT invalidate a URI from a Location or</td><td> </td><td class="right">   However, a cache MUST NOT invalidate a URI from a Location or</td><td class="lineno" valign="top"></td></tr>
366      <tr><td class="lineno" valign="top"></td><td class="left">   Content-Location header field if the host part of that URI differs</td><td> </td><td class="right">   Content-Location header field if the host part of that URI differs</td><td class="lineno" valign="top"></td></tr>
367      <tr><td class="lineno" valign="top"></td><td class="left">   from the host part in the effective request URI (Section 4.3 of</td><td> </td><td class="right">   from the host part in the effective request URI (Section 4.3 of</td><td class="lineno" valign="top"></td></tr>
368      <tr><td class="lineno" valign="top"></td><td class="left">   [Part1]).  This helps prevent denial of service attacks.</td><td> </td><td class="right">   [Part1]).  This helps prevent denial of service attacks.</td><td class="lineno" valign="top"></td></tr>
369      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
370      <tr><td><a name="diff0021" /></td></tr>
371      <tr><td class="lineno" valign="top"></td><td class="lblock">   A cache <span class="delete">that passes through requests with methods it does not</span></td><td> </td><td class="rblock">   A cache SHOULD invalidate the effective request URI (Section 4.3 of</td><td class="lineno" valign="top"></td></tr>
372      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   understand</span> SHOULD invalidate the effective request URI (Section 4.3</td><td> </td><td class="rblock">   <span class="insert">[Part1]) when it receives a non-error response to a request with a</span></td><td class="lineno" valign="top"></td></tr>
373      <tr><td class="lineno" valign="top"></td><td class="lblock">   of <span class="delete">[Part1]).</span></td><td> </td><td class="rblock"><span class="insert">   method whose safety is unknown.</span></td><td class="lineno" valign="top"></td></tr>
374      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
375      <tr><td><a name="diff0022" /></td></tr>
376      <tr><td class="lineno" valign="top"></td><td class="lblock">   Here, <span class="delete">"invalidate"</span> means that the cache will either remove all stored</td><td> </td><td class="rblock">   Here, <span class="insert">a "non-error response" is one with a 2xx or 3xx status code.</span></td><td class="lineno" valign="top"></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   "Invalidate"</span> means that the cache will either remove all stored</td><td class="lineno" valign="top"></td></tr>
378      <tr><td class="lineno" valign="top"></td><td class="left">   responses related to the effective request URI, or will mark these as</td><td> </td><td class="right">   responses related to the effective request URI, or will mark these as</td><td class="lineno" valign="top"></td></tr>
379      <tr><td class="lineno" valign="top"></td><td class="left">   "invalid" and in need of a mandatory validation before they can be</td><td> </td><td class="right">   "invalid" and in need of a mandatory validation before they can be</td><td class="lineno" valign="top"></td></tr>
380      <tr><td class="lineno" valign="top"></td><td class="left">   returned in response to a subsequent request.</td><td> </td><td class="right">   returned in response to a subsequent request.</td><td class="lineno" valign="top"></td></tr>
381      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
382      <tr><td class="lineno" valign="top"></td><td class="left">   Note that this does not guarantee that all appropriate responses are</td><td> </td><td class="right">   Note that this does not guarantee that all appropriate responses are</td><td class="lineno" valign="top"></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="left">   invalidated.  For example, the request that caused the change at the</td><td> </td><td class="right">   invalidated.  For example, the request that caused the change at the</td><td class="lineno" valign="top"></td></tr>
384      <tr><td class="lineno" valign="top"></td><td class="left">   origin server might not have gone through the cache where a response</td><td> </td><td class="right">   origin server might not have gone through the cache where a response</td><td class="lineno" valign="top"></td></tr>
385      <tr><td class="lineno" valign="top"></td><td class="left">   is stored.</td><td> </td><td class="right">   is stored.</td><td class="lineno" valign="top"></td></tr>
386      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
387      <tr><td class="lineno" valign="top"></td><td class="left">2.6.  Shared Caching of Authenticated Responses</td><td> </td><td class="right">2.6.  Shared Caching of Authenticated Responses</td><td class="lineno" valign="top"></td></tr>
388      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
389      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 17, line 5</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 17, line 22</em></th><td></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="left">   absent from a request, it can only match another request if it is</td><td> </td><td class="right">   absent from a request, it can only match another request if it is</td><td class="lineno" valign="top"></td></tr>
391      <tr><td class="lineno" valign="top"></td><td class="left">   also absent there.</td><td> </td><td class="right">   also absent there.</td><td class="lineno" valign="top"></td></tr>
392      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
393      <tr><td class="lineno" valign="top"></td><td class="left">   A Vary header field-value of "*" always fails to match, and</td><td> </td><td class="right">   A Vary header field-value of "*" always fails to match, and</td><td class="lineno" valign="top"></td></tr>
394      <tr><td class="lineno" valign="top"></td><td class="left">   subsequent requests to that resource can only be properly interpreted</td><td> </td><td class="right">   subsequent requests to that resource can only be properly interpreted</td><td class="lineno" valign="top"></td></tr>
395      <tr><td class="lineno" valign="top"></td><td class="left">   by the origin server.</td><td> </td><td class="right">   by the origin server.</td><td class="lineno" valign="top"></td></tr>
396      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
397      <tr><td class="lineno" valign="top"></td><td class="left">   The stored response with matching selecting header fields is known as</td><td> </td><td class="right">   The stored response with matching selecting header fields is known as</td><td class="lineno" valign="top"></td></tr>
398      <tr><td class="lineno" valign="top"></td><td class="left">   the selected response.</td><td> </td><td class="right">   the selected response.</td><td class="lineno" valign="top"></td></tr>
399      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
400      <tr><td><a name="diff0023" /></td></tr>
401      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">If multiple selected responses are available, the most recent</span></td><td class="lineno" valign="top"></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   response (as determined by the Date header field) is used; see</span></td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Section 2.2.</span></td><td class="lineno" valign="top"></td></tr>
404      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
405      <tr><td class="lineno" valign="top"></td><td class="left">   If no selected response is available, the cache MAY forward the</td><td> </td><td class="right">   If no selected response is available, the cache MAY forward the</td><td class="lineno" valign="top"></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="left">   presented request to the origin server in a conditional request; see</td><td> </td><td class="right">   presented request to the origin server in a conditional request; see</td><td class="lineno" valign="top"></td></tr>
407      <tr><td class="lineno" valign="top"></td><td class="left">   Section 2.4.</td><td> </td><td class="right">   Section 2.4.</td><td class="lineno" valign="top"></td></tr>
408      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
409      <tr><td class="lineno" valign="top"></td><td class="left">2.8.  Combining Responses</td><td> </td><td class="right">2.8.  Combining Responses</td><td class="lineno" valign="top"></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
411      <tr><td class="lineno" valign="top"></td><td class="left">   When a cache receives a 304 (Not Modified) response or a 206 (Partial</td><td> </td><td class="right">   When a cache receives a 304 (Not Modified) response or a 206 (Partial</td><td class="lineno" valign="top"></td></tr>
412      <tr><td class="lineno" valign="top"></td><td class="left">   Content) response (in this section, the "new" response"), it needs to</td><td> </td><td class="right">   Content) response (in this section, the "new" response"), it needs to</td><td class="lineno" valign="top"></td></tr>
413      <tr><td class="lineno" valign="top"></td><td class="left">   create an updated response by combining the stored response with the</td><td> </td><td class="right">   create an updated response by combining the stored response with the</td><td class="lineno" valign="top"></td></tr>
414      <tr><td class="lineno" valign="top"></td><td class="left">   new one, so that the updated response can be used to satisfy the</td><td> </td><td class="right">   new one, so that the updated response can be used to satisfy the</td><td class="lineno" valign="top"></td></tr>
415      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
416      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 18, line 15</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 18, line 34</em></th><td></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="left">3.1.  Age</td><td> </td><td class="right">3.1.  Age</td><td class="lineno" valign="top"></td></tr>
418      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
419      <tr><td class="lineno" valign="top"></td><td class="left">   The "Age" header field conveys the sender's estimate of the amount of</td><td> </td><td class="right">   The "Age" header field conveys the sender's estimate of the amount of</td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno" valign="top"></td><td class="left">   time since the response was generated or successfully validated at</td><td> </td><td class="right">   time since the response was generated or successfully validated at</td><td class="lineno" valign="top"></td></tr>
421      <tr><td class="lineno" valign="top"></td><td class="left">   the origin server.  Age values are calculated as specified in</td><td> </td><td class="right">   the origin server.  Age values are calculated as specified in</td><td class="lineno" valign="top"></td></tr>
422      <tr><td class="lineno" valign="top"></td><td class="left">   Section 2.3.2.</td><td> </td><td class="right">   Section 2.3.2.</td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
424      <tr><td class="lineno" valign="top"></td><td class="left">     Age = delta-seconds</td><td> </td><td class="right">     Age = delta-seconds</td><td class="lineno" valign="top"></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno" valign="top"></td><td class="left">   Age field-values are non-negative integers, representing time in</td><td> </td><td class="right">   Age field-values are non-negative integers, representing time in</td><td class="lineno" valign="top"></td></tr>
427      <tr><td><a name="diff0024" /></td></tr>
428      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">seconds.</span></td><td> </td><td class="rblock">   <span class="insert">seconds (see Section 1.5).</span></td><td class="lineno" valign="top"></td></tr>
429      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></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">     delta-seconds  = 1*DIGIT</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"></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">   If a cache receives a value larger than the largest positive integer</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">   it can represent, or if any of its age calculations overflows, it</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">   MUST transmit an Age header field with a field-value of 2147483648</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">   (2^31).  Recipients parsing the Age header field-value SHOULD use an</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">   arithmetic type of at least 31 bits of range.</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">   The presence of an Age header field in a response implies that a</td><td> </td><td class="right">   The presence of an Age header field in a response implies that a</td><td class="lineno" valign="top"></td></tr>
439      <tr><td class="lineno" valign="top"></td><td class="left">   response is not first-hand.  However, the converse is not true, since</td><td> </td><td class="right">   response is not first-hand.  However, the converse is not true, since</td><td class="lineno" valign="top"></td></tr>
440      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP/1.0 caches might not implement the Age header field.</td><td> </td><td class="right">   HTTP/1.0 caches might not implement the Age header field.</td><td class="lineno" valign="top"></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
442      <tr><td class="lineno" valign="top"></td><td class="left">3.2.  Cache-Control</td><td> </td><td class="right">3.2.  Cache-Control</td><td class="lineno" valign="top"></td></tr>
443      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
444      <tr><td class="lineno" valign="top"></td><td class="left">   The "Cache-Control" header field is used to specify directives for</td><td> </td><td class="right">   The "Cache-Control" header field is used to specify directives for</td><td class="lineno" valign="top"></td></tr>
445      <tr><td class="lineno" valign="top"></td><td class="left">   caches along the request/response chain.  Such cache directives are</td><td> </td><td class="right">   caches along the request/response chain.  Such cache directives are</td><td class="lineno" valign="top"></td></tr>
446      <tr><td class="lineno" valign="top"></td><td class="left">   unidirectional in that the presence of a directive in a request does</td><td> </td><td class="right">   unidirectional in that the presence of a directive in a request does</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-l12" /><small>skipping to change at</small><em> page 19, line 51</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 20, line 11</em></th><td></td></tr>
449      <tr><td class="lineno" valign="top"></td><td class="left">      ensuring privacy.  In particular, malicious or compromised caches</td><td> </td><td class="right">      ensuring privacy.  In particular, malicious or compromised caches</td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="left">      might not recognize or obey this directive, and communications</td><td> </td><td class="right">      might not recognize or obey this directive, and communications</td><td class="lineno" valign="top"></td></tr>
451      <tr><td class="lineno" valign="top"></td><td class="left">      networks might be vulnerable to eavesdropping.</td><td> </td><td class="right">      networks might be vulnerable to eavesdropping.</td><td class="lineno" valign="top"></td></tr>
452      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="left">      Note that if a request containing this directive is satisfied from</td><td> </td><td class="right">      Note that if a request containing this directive is satisfied from</td><td class="lineno" valign="top"></td></tr>
454      <tr><td class="lineno" valign="top"></td><td class="left">      a cache, the no-store request directive does not apply to the</td><td> </td><td class="right">      a cache, the no-store request directive does not apply to the</td><td class="lineno" valign="top"></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="left">      already stored response.</td><td> </td><td class="right">      already stored response.</td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
457      <tr><td class="lineno" valign="top"></td><td class="left">   max-age</td><td> </td><td class="right">   max-age</td><td class="lineno" valign="top"></td></tr>
458      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
459      <tr><td><a name="diff0025" /></td></tr>
460      <tr><td class="lineno" valign="top"></td><td class="lblock">      The max-age request directive indicates that the client is <span class="delete">willing</span></td><td> </td><td class="rblock">      The max-age request directive indicates that the client is</td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno" valign="top"></td><td class="lblock">      to accept a response whose age is <span class="delete">no</span> greater than the specified</td><td> </td><td class="rblock">      <span class="insert">unwilling</span> to accept a response whose age is greater than the</td><td class="lineno" valign="top"></td></tr>
462      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">time in</span> seconds.  Unless the max-stale request directive is also</td><td> </td><td class="rblock">      specified <span class="insert">number of</span> seconds.  Unless the max-stale request</td><td class="lineno" valign="top"></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="lblock">      present, the client is not willing to accept a stale response.</td><td> </td><td class="rblock">      directive is also present, the client is not willing to accept a</td><td class="lineno" valign="top"></td></tr>
464      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">      stale response.</td><td class="lineno" valign="top"></td></tr>
465      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
466      <tr><td class="lineno" valign="top"></td><td class="left">   max-stale</td><td> </td><td class="right">   max-stale</td><td class="lineno" valign="top"></td></tr>
467      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
468      <tr><td class="lineno" valign="top"></td><td class="left">      The max-stale request directive indicates that the client is</td><td> </td><td class="right">      The max-stale request directive indicates that the client is</td><td class="lineno" valign="top"></td></tr>
469      <tr><td class="lineno" valign="top"></td><td class="left">      willing to accept a response that has exceeded its expiration</td><td> </td><td class="right">      willing to accept a response that has exceeded its expiration</td><td class="lineno" valign="top"></td></tr>
470      <tr><td class="lineno" valign="top"></td><td class="left">      time.  If max-stale is assigned a value, then the client is</td><td> </td><td class="right">      time.  If max-stale is assigned a value, then the client is</td><td class="lineno" valign="top"></td></tr>
471      <tr><td class="lineno" valign="top"></td><td class="left">      willing to accept a response that has exceeded its expiration time</td><td> </td><td class="right">      willing to accept a response that has exceeded its expiration time</td><td class="lineno" valign="top"></td></tr>
472      <tr><td class="lineno" valign="top"></td><td class="left">      by no more than the specified number of seconds.  If no value is</td><td> </td><td class="right">      by no more than the specified number of seconds.  If no value is</td><td class="lineno" valign="top"></td></tr>
473      <tr><td class="lineno" valign="top"></td><td class="left">      assigned to max-stale, then the client is willing to accept a</td><td> </td><td class="right">      assigned to max-stale, then the client is willing to accept a</td><td class="lineno" valign="top"></td></tr>
474      <tr><td class="lineno" valign="top"></td><td class="left">      stale response of any age.</td><td> </td><td class="right">      stale response of any age.</td><td class="lineno" valign="top"></td></tr>
475      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
476      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 20, line 35</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 20, line 45</em></th><td></td></tr>
477      <tr><td class="lineno" valign="top"></td><td class="left">   no-transform</td><td> </td><td class="right">   no-transform</td><td class="lineno" valign="top"></td></tr>
478      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
479      <tr><td class="lineno" valign="top"></td><td class="left">      The no-transform request directive indicates that an intermediary</td><td> </td><td class="right">      The no-transform request directive indicates that an intermediary</td><td class="lineno" valign="top"></td></tr>
480      <tr><td class="lineno" valign="top"></td><td class="left">      (whether or not it implements a cache) MUST NOT change the</td><td> </td><td class="right">      (whether or not it implements a cache) MUST NOT change the</td><td class="lineno" valign="top"></td></tr>
481      <tr><td class="lineno" valign="top"></td><td class="left">      Content-Encoding, Content-Range or Content-Type request header</td><td> </td><td class="right">      Content-Encoding, Content-Range or Content-Type request header</td><td class="lineno" valign="top"></td></tr>
482      <tr><td class="lineno" valign="top"></td><td class="left">      fields, nor the request representation.</td><td> </td><td class="right">      fields, nor the request representation.</td><td class="lineno" valign="top"></td></tr>
483      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
484      <tr><td class="lineno" valign="top"></td><td class="left">   only-if-cached</td><td> </td><td class="right">   only-if-cached</td><td class="lineno" valign="top"></td></tr>
485      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
486      <tr><td class="lineno" valign="top"></td><td class="left">      The only-if-cached request directive indicates that the client</td><td> </td><td class="right">      The only-if-cached request directive indicates that the client</td><td class="lineno" valign="top"></td></tr>
487      <tr><td><a name="diff0026" /></td></tr>
488      <tr><td class="lineno" valign="top"></td><td class="lblock">      only wishes to <span class="delete">retur</span>n a stored response.  If it receives this</td><td> </td><td class="rblock">      only wishes to <span class="insert">obtai</span>n a stored response.  If it receives this</td><td class="lineno" valign="top"></td></tr>
489      <tr><td class="lineno" valign="top"></td><td class="left">      directive, a cache SHOULD either respond using a stored response</td><td> </td><td class="right">      directive, a cache SHOULD either respond using a stored response</td><td class="lineno" valign="top"></td></tr>
490      <tr><td class="lineno" valign="top"></td><td class="left">      that is consistent with the other constraints of the request, or</td><td> </td><td class="right">      that is consistent with the other constraints of the request, or</td><td class="lineno" valign="top"></td></tr>
491      <tr><td class="lineno" valign="top"></td><td class="left">      respond with a 504 (Gateway Timeout) status code.  If a group of</td><td> </td><td class="right">      respond with a 504 (Gateway Timeout) status code.  If a group of</td><td class="lineno" valign="top"></td></tr>
492      <tr><td class="lineno" valign="top"></td><td class="left">      caches is being operated as a unified system with good internal</td><td> </td><td class="right">      caches is being operated as a unified system with good internal</td><td class="lineno" valign="top"></td></tr>
493      <tr><td class="lineno" valign="top"></td><td class="left">      connectivity, a member cache MAY forward such a request within</td><td> </td><td class="right">      connectivity, a member cache MAY forward such a request within</td><td class="lineno" valign="top"></td></tr>
494      <tr><td class="lineno" valign="top"></td><td class="left">      that group of caches.</td><td> </td><td class="right">      that group of caches.</td><td class="lineno" valign="top"></td></tr>
495      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
496      <tr><td class="lineno" valign="top"></td><td class="left">3.2.2.  Response Cache-Control Directives</td><td> </td><td class="right">3.2.2.  Response Cache-Control Directives</td><td class="lineno" valign="top"></td></tr>
497      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
498      <tr><td class="lineno" valign="top"></td><td class="left">     cache-response-directive =</td><td> </td><td class="right">     cache-response-directive =</td><td class="lineno" valign="top"></td></tr>
499      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
500      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 24, line 20</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 24, line 20</em></th><td></td></tr>
501      <tr><td class="lineno" valign="top"></td><td class="left">   wishing to allow the UCI community to use an otherwise private</td><td> </td><td class="right">   wishing to allow the UCI community to use an otherwise private</td><td class="lineno" valign="top"></td></tr>
502      <tr><td class="lineno" valign="top"></td><td class="left">   response in their shared cache(s) could do so by including</td><td> </td><td class="right">   response in their shared cache(s) could do so by including</td><td class="lineno" valign="top"></td></tr>
503      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
504      <tr><td class="lineno" valign="top"></td><td class="left">     Cache-Control: private, community="UCI"</td><td> </td><td class="right">     Cache-Control: private, community="UCI"</td><td class="lineno" valign="top"></td></tr>
505      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
506      <tr><td class="lineno" valign="top"></td><td class="left">   A cache seeing this header field will act correctly even if the cache</td><td> </td><td class="right">   A cache seeing this header field will act correctly even if the cache</td><td class="lineno" valign="top"></td></tr>
507      <tr><td class="lineno" valign="top"></td><td class="left">   does not understand the community cache-extension, since it will also</td><td> </td><td class="right">   does not understand the community cache-extension, since it will also</td><td class="lineno" valign="top"></td></tr>
508      <tr><td class="lineno" valign="top"></td><td class="left">   see and understand the private directive and thus default to the safe</td><td> </td><td class="right">   see and understand the private directive and thus default to the safe</td><td class="lineno" valign="top"></td></tr>
509      <tr><td class="lineno" valign="top"></td><td class="left">   behavior.</td><td> </td><td class="right">   behavior.</td><td class="lineno" valign="top"></td></tr>
510      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
511      <tr><td><a name="diff0027" /></td></tr>
512      <tr><td class="lineno" valign="top"></td><td class="lblock">   A cache MUST <span class="delete">be</span> ignore unrecognized cache directives; it is assumed</td><td> </td><td class="rblock">   A cache MUST ignore unrecognized cache directives; it is assumed that</td><td class="lineno" valign="top"></td></tr>
513      <tr><td class="lineno" valign="top"></td><td class="lblock">   that any cache directive likely to be unrecognized by an HTTP/1.1</td><td> </td><td class="rblock">   any cache directive likely to be unrecognized by an HTTP/1.1 cache</td><td class="lineno" valign="top"></td></tr>
514      <tr><td class="lineno" valign="top"></td><td class="lblock">   cache will be combined with standard directives (or the response's</td><td> </td><td class="rblock">   will be combined with standard directives (or the response's default</td><td class="lineno" valign="top"></td></tr>
515      <tr><td class="lineno" valign="top"></td><td class="lblock">   default cacheability) such that the cache behavior will remain</td><td> </td><td class="rblock">   cacheability) such that the cache behavior will remain minimally</td><td class="lineno" valign="top"></td></tr>
516      <tr><td class="lineno" valign="top"></td><td class="lblock">   minimally correct even if the cache does not understand the</td><td> </td><td class="rblock">   correct even if the cache does not understand the extension(s).</td><td class="lineno" valign="top"></td></tr>
517      <tr><td class="lineno" valign="top"></td><td class="lblock">   extension(s).</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
518      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
519      <tr><td class="lineno" valign="top"></td><td class="left">   The HTTP Cache Directive Registry defines the name space for the</td><td> </td><td class="right">   The HTTP Cache Directive Registry defines the name space for the</td><td class="lineno" valign="top"></td></tr>
520      <tr><td class="lineno" valign="top"></td><td class="left">   cache directives.</td><td> </td><td class="right">   cache directives.</td><td class="lineno" valign="top"></td></tr>
521      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
522      <tr><td class="lineno" valign="top"></td><td class="left">   A registration MUST include the following fields:</td><td> </td><td class="right">   A registration MUST include the following fields:</td><td class="lineno" valign="top"></td></tr>
523      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
524      <tr><td class="lineno" valign="top"></td><td class="left">   o  Cache Directive Name</td><td> </td><td class="right">   o  Cache Directive Name</td><td class="lineno" valign="top"></td></tr>
525      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
526      <tr><td class="lineno" valign="top"></td><td class="left">   o  Pointer to specification text</td><td> </td><td class="right">   o  Pointer to specification text</td><td class="lineno" valign="top"></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"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
529      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 25, line 25</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 25, line 24</em></th><td></td></tr>
530      <tr><td class="lineno" valign="top"></td><td class="left">      in shared caches.</td><td> </td><td class="right">      in shared caches.</td><td class="lineno" valign="top"></td></tr>
531      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
532      <tr><td class="lineno" valign="top"></td><td class="left">   A server SHOULD NOT send Expires dates more than one year in the</td><td> </td><td class="right">   A server SHOULD NOT send Expires dates more than one year in the</td><td class="lineno" valign="top"></td></tr>
533      <tr><td class="lineno" valign="top"></td><td class="left">   future.</td><td> </td><td class="right">   future.</td><td class="lineno" valign="top"></td></tr>
534      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
535      <tr><td class="lineno" valign="top"></td><td class="left">   A cache MUST treat other invalid date formats, especially including</td><td> </td><td class="right">   A cache MUST treat other invalid date formats, especially including</td><td class="lineno" valign="top"></td></tr>
536      <tr><td class="lineno" valign="top"></td><td class="left">   the value "0", as in the past (i.e., "already expired").</td><td> </td><td class="right">   the value "0", as in the past (i.e., "already expired").</td><td class="lineno" valign="top"></td></tr>
537      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
538      <tr><td class="lineno" valign="top"></td><td class="left">3.4.  Pragma</td><td> </td><td class="right">3.4.  Pragma</td><td class="lineno" valign="top"></td></tr>
539      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
540      <tr><td><a name="diff0028" /></td></tr>
541      <tr><td class="lineno" valign="top"></td><td class="lblock">   The "Pragma" header field <span class="delete">is used to include implementation-specific</span></td><td> </td><td class="rblock">   The "Pragma" header field <span class="insert">allows backwards compatibility with</span></td><td class="lineno" valign="top"></td></tr>
542      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   directives</span> that <span class="delete">might apply to any recipient along the request/</span></td><td> </td><td class="rblock"><span class="insert">   HTTP/1.0 caches, so</span> that <span class="insert">clients can</span> specify <span class="insert">a "no-cache" request</span></td><td class="lineno" valign="top"></td></tr>
543      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   response chain.  All pragma directives</span> specify <span class="delete">optional behavior from</span></td><td> </td><td class="rblock">   that <span class="insert">they will understand (as Cache-Control was not defined until</span></td><td class="lineno" valign="top"></td></tr>
544      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the viewpoint of the protocol; however, some systems MAY require</span> that</td><td> </td><td class="rblock"><span class="insert">   HTTP/1.1).  When</span> the <span class="insert">Cache-Control header is also present and</span></td><td class="lineno" valign="top"></td></tr>
545      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">behavior be consistent with</span> the <span class="delete">directives.</span></td><td> </td><td class="rblock"><span class="insert">   understood in a request, Pragma is ignored.</span></td><td class="lineno" valign="top"></td></tr>
546      <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>
547      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   In HTTP/1.0, Pragma was defined as an extensible field for</span></td><td class="lineno" valign="top"></td></tr>
548      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   implementation-specified directives for recipients.  This</span></td><td class="lineno" valign="top"></td></tr>
549      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   specification deprecates such extensions to improve interoperability.</span></td><td class="lineno" valign="top"></td></tr>
550      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
551      <tr><td class="lineno" valign="top"></td><td class="left">     Pragma           = 1#pragma-directive</td><td> </td><td class="right">     Pragma           = 1#pragma-directive</td><td class="lineno" valign="top"></td></tr>
552      <tr><td class="lineno" valign="top"></td><td class="left">     pragma-directive = "no-cache" / extension-pragma</td><td> </td><td class="right">     pragma-directive = "no-cache" / extension-pragma</td><td class="lineno" valign="top"></td></tr>
553      <tr><td class="lineno" valign="top"></td><td class="left">     extension-pragma = token [ "=" ( token / quoted-string ) ]</td><td> </td><td class="right">     extension-pragma = token [ "=" ( token / quoted-string ) ]</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><a name="diff0029" /></td></tr>
556      <tr><td class="lineno" valign="top"></td><td class="lblock">   When the <span class="delete">no-cache directive</span> is present in a <span class="delete">request message, a cache</span></td><td> </td><td class="rblock">   When the <span class="insert">Cache-Control header</span> is <span class="insert">not</span> present in a <span class="insert">request,</span> the <span class="insert">no-</span></td><td class="lineno" valign="top"></td></tr>
557      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   SHOULD forward</span> the request <span class="delete">toward the origin server even if it has a</span></td><td> </td><td class="rblock"><span class="insert">   cache</span> request <span class="insert">pragma-directive MUST have</span> the same <span class="insert">effect on caches</span> as</td><td class="lineno" valign="top"></td></tr>
558      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   stored copy of what is being requested.  This pragma directive has</span></td><td> </td><td class="rblock">   if "Cache-Control: <span class="insert">no-cache" were present (see Section 3.2.1).</span></td><td class="lineno" valign="top"></td></tr>
559      <tr><td class="lineno" valign="top"></td><td class="lblock">   the same <span class="delete">semantics as the no-cache response directive (see</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
560      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Section 3.2.2) and is defined here for backward compatibility with</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
561      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   HTTP/1.0.  A client SHOULD include both header fields when a no-cache</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
562      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request is sent to a server not known to be HTTP/1.1 compliant.  A</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
563      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   cache SHOULD treat "Pragma: no-cache"</span> as if <span class="delete">the client had sent</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
564      <tr><td class="lineno" valign="top"></td><td class="lblock">   "Cache-Control: <span class="delete">no-cache".</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
565      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
566      <tr><td><a name="diff0030" /></td></tr>
567      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">Note: Because the meaning of "Pragma: no-cache" as</span> a <span class="delete">header field</span></td><td> </td><td class="rblock">   <span class="insert">When sending</span> a <span class="insert">no-cache request,</span> a <span class="insert">client SHOULD include both pragma</span></td><td class="lineno" valign="top"></td></tr>
568      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      is not actually specified, it does not provide a reliable</span></td><td> </td><td class="rblock"><span class="insert">   and cache-control directives unless Cache-Control: no-cache is</span></td><td class="lineno" valign="top"></td></tr>
569      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      replacement for "Cache-Control: no-cache" in</span> a <span class="delete">response.</span></td><td> </td><td class="rblock"><span class="insert">   purposefully omitted to target other Cache-Control response</span></td><td class="lineno" valign="top"></td></tr>
570      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   directives at HTTP/1.1 caches.  For example:</span></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><a name="diff0031" /></td></tr>
573      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">This mechanism is deprecated; no new Pragma directives</span> will <span class="delete">be</span></td><td> </td><td class="rblock">     <span class="insert">GET / HTTP/1.1</span></td><td class="lineno" valign="top"></td></tr>
574      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   defined</span> in <span class="delete">HTTP.</span></td><td> </td><td class="rblock"><span class="insert">     Host: www.example.com</span></td><td class="lineno" valign="top"></td></tr>
575      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Cache-Control: max-age=30</span></td><td class="lineno" valign="top"></td></tr>
576      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     Pragma: no-cache</span></td><td class="lineno" valign="top"></td></tr>
577      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
578      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   will <span class="insert">constrain HTTP/1.1 caches to serve a response no older than 30</span></td><td class="lineno" valign="top"></td></tr>
579      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   seconds, while precluding implementations that do not understand</span></td><td class="lineno" valign="top"></td></tr>
580      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Cache-Control from serving a cached response.</span></td><td class="lineno" valign="top"></td></tr>
581      <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>
582      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      Note: Because the meaning of "Pragma: no-cache" in responses is</span></td><td class="lineno" valign="top"></td></tr>
583      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      not specified, it does not provide a reliable replacement for</span></td><td class="lineno" valign="top"></td></tr>
584      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      "Cache-Control: no-cache"</span> in <span class="insert">them.</span></td><td class="lineno" valign="top"></td></tr>
585      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
586      <tr><td class="lineno" valign="top"></td><td class="left">3.5.  Vary</td><td> </td><td class="right">3.5.  Vary</td><td class="lineno" valign="top"></td></tr>
587      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
588      <tr><td class="lineno" valign="top"></td><td class="left">   The "Vary" header field conveys the set of header fields that were</td><td> </td><td class="right">   The "Vary" header field conveys the set of header fields that were</td><td class="lineno" valign="top"></td></tr>
589      <tr><td class="lineno" valign="top"></td><td class="left">   used to select the representation.</td><td> </td><td class="right">   used to select the representation.</td><td class="lineno" valign="top"></td></tr>
590      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
591      <tr><td class="lineno" valign="top"></td><td class="left">   Caches use this information, in part, to determine whether a stored</td><td> </td><td class="right">   Caches use this information, in part, to determine whether a stored</td><td class="lineno" valign="top"></td></tr>
592      <tr><td class="lineno" valign="top"></td><td class="left">   response can be used to satisfy a given request; see Section 2.7.</td><td> </td><td class="right">   response can be used to satisfy a given request; see Section 2.7.</td><td class="lineno" valign="top"></td></tr>
593      <tr><td class="lineno" valign="top"></td><td class="left">   determines, while the response is fresh, whether a cache is permitted</td><td> </td><td class="right">   determines, while the response is fresh, whether a cache is permitted</td><td class="lineno" valign="top"></td></tr>
594      <tr><td class="lineno" valign="top"></td><td class="left">   to use the response to reply to a subsequent request without</td><td> </td><td class="right">   to use the response to reply to a subsequent request without</td><td class="lineno" valign="top"></td></tr>
595      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
596      <tr bgcolor="gray" ><td></td><th><a name="part-l16" /><small>skipping to change at</small><em> page 31, line 18</em></th><th> </th><th><a name="part-r16" /><small>skipping to change at</small><em> page 31, line 18</em></th><td></td></tr>
597      <tr><td class="lineno" valign="top"></td><td class="left">   suggestions and comments from individuals including: Shel Kaphan,</td><td> </td><td class="right">   suggestions and comments from individuals including: Shel Kaphan,</td><td class="lineno" valign="top"></td></tr>
598      <tr><td class="lineno" valign="top"></td><td class="left">   Paul Leach, Koen Holtman, David Morris, and Larry Masinter.</td><td> </td><td class="right">   Paul Leach, Koen Holtman, David Morris, and Larry Masinter.</td><td class="lineno" valign="top"></td></tr>
599      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
600      <tr><td class="lineno" valign="top"></td><td class="left">8.  References</td><td> </td><td class="right">8.  References</td><td class="lineno" valign="top"></td></tr>
601      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
602      <tr><td class="lineno" valign="top"></td><td class="left">8.1.  Normative References</td><td> </td><td class="right">8.1.  Normative References</td><td class="lineno" valign="top"></td></tr>
603      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
604      <tr><td class="lineno" valign="top"></td><td class="left">   [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>
605      <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>
606      <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>
607      <tr><td><a name="diff0032" /></td></tr>
608      <tr><td class="lineno" valign="top"></td><td class="lblock">              and Message Parsing", <span class="delete">draft-ietf-httpbis-p1-messaging-14</span></td><td> </td><td class="rblock">              and Message Parsing", <span class="insert">draft-ietf-httpbis-p1-messaging-15</span></td><td class="lineno" valign="top"></td></tr>
609      <tr><td class="lineno" valign="top"></td><td class="lblock">              (work in progress), <span class="delete">April</span> 2011.</td><td> </td><td class="rblock">              (work in progress), <span class="insert">July</span> 2011.</td><td class="lineno" valign="top"></td></tr>
610      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
611      <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>
612      <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>
613      <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>
614      <tr><td><a name="diff0033" /></td></tr>
615      <tr><td class="lineno" valign="top"></td><td class="lblock">              Semantics", <span class="delete">draft-ietf-httpbis-p2-semantics-14</span> (work in</td><td> </td><td class="rblock">              Semantics", <span class="insert">draft-ietf-httpbis-p2-semantics-15</span> (work in</td><td class="lineno" valign="top"></td></tr>
616      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">April</span> 2011.</td><td> </td><td class="rblock">              progress), <span class="insert">July</span> 2011.</td><td class="lineno" valign="top"></td></tr>
617      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
618      <tr><td 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>
619      <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>
620      <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>
621      <tr><td><a name="diff0034" /></td></tr>
622      <tr><td class="lineno" valign="top"></td><td class="lblock">              Requests", <span class="delete">draft-ietf-httpbis-p4-conditional-14</span> (work in</td><td> </td><td class="rblock">              Requests", <span class="insert">draft-ietf-httpbis-p4-conditional-15</span> (work in</td><td class="lineno" valign="top"></td></tr>
623      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">April</span> 2011.</td><td> </td><td class="rblock">              progress), <span class="insert">July</span> 2011.</td><td class="lineno" valign="top"></td></tr>
624      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
625      <tr><td class="lineno" valign="top"></td><td class="left">   [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>
626      <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>
627      <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>
628      <tr><td><a name="diff0035" /></td></tr>
629      <tr><td class="lineno" valign="top"></td><td class="lblock">              Partial Responses", <span class="delete">draft-ietf-httpbis-p5-range-14</span> (work</td><td> </td><td class="rblock">              Partial Responses", <span class="insert">draft-ietf-httpbis-p5-range-15</span> (work</td><td class="lineno" valign="top"></td></tr>
630      <tr><td class="lineno" valign="top"></td><td class="lblock">              in progress), <span class="delete">April</span> 2011.</td><td> </td><td class="rblock">              in progress), <span class="insert">July</span> 2011.</td><td class="lineno" valign="top"></td></tr>
631      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
632      <tr><td class="lineno" valign="top"></td><td class="left">   [Part7]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part7]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
633      <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>
634      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 7: Authentication",</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 7: Authentication",</td><td class="lineno" valign="top"></td></tr>
635      <tr><td><a name="diff0036" /></td></tr>
636      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p7-auth-14</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p7-auth-15</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
637      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">April</span> 2011.</td><td> </td><td class="rblock">              <span class="insert">July</span> 2011.</td><td class="lineno" valign="top"></td></tr>
638      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
639      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate</td><td> </td><td class="right">   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate</td><td class="lineno" valign="top"></td></tr>
640      <tr><td class="lineno" valign="top"></td><td class="left">              Requirement Levels", BCP 14, RFC 2119, March 1997.</td><td> </td><td class="right">              Requirement Levels", BCP 14, RFC 2119, March 1997.</td><td class="lineno" valign="top"></td></tr>
641      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
642      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC5234]  Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax</td><td> </td><td class="right">   [RFC5234]  Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax</td><td class="lineno" valign="top"></td></tr>
643      <tr><td class="lineno" valign="top"></td><td class="left">              Specifications: ABNF", STD 68, RFC 5234, January 2008.</td><td> </td><td class="right">              Specifications: ABNF", STD 68, RFC 5234, January 2008.</td><td class="lineno" valign="top"></td></tr>
644      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
645      <tr><td class="lineno" valign="top"></td><td class="left">8.2.  Informative References</td><td> </td><td class="right">8.2.  Informative References</td><td class="lineno" valign="top"></td></tr>
646      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
647      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC1305]  Mills, D., "Network Time Protocol (Version 3)</td><td> </td><td class="right">   [RFC1305]  Mills, D., "Network Time Protocol (Version 3)</td><td class="lineno" valign="top"></td></tr>
648      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
649      <tr bgcolor="gray" ><td></td><th><a name="part-l17" /><small>skipping to change at</small><em> page 33, line 36</em></th><th> </th><th><a name="part-r17" /><small>skipping to change at</small><em> page 33, line 36</em></th><td></td></tr>
650      <tr><td class="lineno" valign="top"></td><td class="left">    field-name ] ) DQUOTE ] ) / "no-store" / "no-transform" /</td><td> </td><td class="right">    field-name ] ) DQUOTE ] ) / "no-store" / "no-transform" /</td><td class="lineno" valign="top"></td></tr>
651      <tr><td class="lineno" valign="top"></td><td class="left">    "must-revalidate" / "proxy-revalidate" / ( "max-age=" delta-seconds</td><td> </td><td class="right">    "must-revalidate" / "proxy-revalidate" / ( "max-age=" delta-seconds</td><td class="lineno" valign="top"></td></tr>
652      <tr><td class="lineno" valign="top"></td><td class="left">    ) / ( "s-maxage=" delta-seconds ) / cache-extension</td><td> </td><td class="right">    ) / ( "s-maxage=" delta-seconds ) / cache-extension</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">   delta-seconds = 1*DIGIT</td><td> </td><td class="right">   delta-seconds = 1*DIGIT</td><td class="lineno" valign="top"></td></tr>
655      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
656      <tr><td class="lineno" valign="top"></td><td class="left">   extension-pragma = token [ "=" ( token / quoted-string ) ]</td><td> </td><td class="right">   extension-pragma = token [ "=" ( token / quoted-string ) ]</td><td class="lineno" valign="top"></td></tr>
657      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
658      <tr><td class="lineno" valign="top"></td><td class="left">   field-name = &lt;field-name, defined in [Part1], Section 3.2&gt;</td><td> </td><td class="right">   field-name = &lt;field-name, defined in [Part1], Section 3.2&gt;</td><td class="lineno" valign="top"></td></tr>
659      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
660      <tr><td><a name="diff0037" /></td></tr>
661      <tr><td class="lineno" valign="top"></td><td class="lblock">   port = &lt;port, defined in [Part1], Section 2.<span class="delete">6</span>&gt;</td><td> </td><td class="rblock">   port = &lt;port, defined in [Part1], Section 2.<span class="insert">7</span>&gt;</td><td class="lineno" valign="top"></td></tr>
662      <tr><td class="lineno" valign="top"></td><td class="left">   pragma-directive = "no-cache" / extension-pragma</td><td> </td><td class="right">   pragma-directive = "no-cache" / extension-pragma</td><td class="lineno" valign="top"></td></tr>
663      <tr><td class="lineno" valign="top"></td><td class="left">   pseudonym = &lt;pseudonym, defined in [Part1], Section 9.9&gt;</td><td> </td><td class="right">   pseudonym = &lt;pseudonym, defined in [Part1], Section 9.9&gt;</td><td class="lineno" valign="top"></td></tr>
664      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
665      <tr><td class="lineno" valign="top"></td><td class="left">   quoted-string = &lt;quoted-string, defined in [Part1], Section 1.2.2&gt;</td><td> </td><td class="right">   quoted-string = &lt;quoted-string, defined in [Part1], Section 1.2.2&gt;</td><td class="lineno" valign="top"></td></tr>
666      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
667      <tr><td class="lineno" valign="top"></td><td class="left">   token = &lt;token, defined in [Part1], Section 1.2.2&gt;</td><td> </td><td class="right">   token = &lt;token, defined in [Part1], Section 1.2.2&gt;</td><td class="lineno" valign="top"></td></tr>
668      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
669      <tr><td><a name="diff0038" /></td></tr>
670      <tr><td class="lineno" valign="top"></td><td class="lblock">   uri-host = &lt;uri-host, defined in [Part1], Section 2.<span class="delete">6</span>&gt;</td><td> </td><td class="rblock">   uri-host = &lt;uri-host, defined in [Part1], Section 2.<span class="insert">7</span>&gt;</td><td class="lineno" valign="top"></td></tr>
671      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
672      <tr><td class="lineno" valign="top"></td><td class="left">   warn-agent = ( uri-host [ ":" port ] ) / pseudonym</td><td> </td><td class="right">   warn-agent = ( uri-host [ ":" port ] ) / pseudonym</td><td class="lineno" valign="top"></td></tr>
673      <tr><td class="lineno" valign="top"></td><td class="left">   warn-code = 3DIGIT</td><td> </td><td class="right">   warn-code = 3DIGIT</td><td class="lineno" valign="top"></td></tr>
674      <tr><td class="lineno" valign="top"></td><td class="left">   warn-date = DQUOTE HTTP-date DQUOTE</td><td> </td><td class="right">   warn-date = DQUOTE HTTP-date DQUOTE</td><td class="lineno" valign="top"></td></tr>
675      <tr><td class="lineno" valign="top"></td><td class="left">   warn-text = quoted-string</td><td> </td><td class="right">   warn-text = quoted-string</td><td class="lineno" valign="top"></td></tr>
676      <tr><td class="lineno" valign="top"></td><td class="left">   warning-value = warn-code SP warn-agent SP warn-text [ SP warn-date</td><td> </td><td class="right">   warning-value = warn-code SP warn-agent SP warn-text [ SP warn-date</td><td class="lineno" valign="top"></td></tr>
677      <tr><td class="lineno" valign="top"></td><td class="left">    ]</td><td> </td><td class="right">    ]</td><td class="lineno" valign="top"></td></tr>
678      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
679      <tr><td class="lineno" valign="top"></td><td class="left">   ABNF diagnostics:</td><td> </td><td class="right">   ABNF diagnostics:</td><td class="lineno" valign="top"></td></tr>
680      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
681      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
682      <tr bgcolor="gray" ><td></td><th><a name="part-l18" /><small>skipping to change at</small><em> page 37, line 18</em></th><th> </th><th><a name="part-r18" /><small>skipping to change at</small><em> page 37, line 18</em></th><td></td></tr>
683      <tr><td class="lineno" valign="top"></td><td class="left">C.10.  Since draft-ietf-httpbis-p6-cache-08</td><td> </td><td class="right">C.10.  Since draft-ietf-httpbis-p6-cache-08</td><td class="lineno" valign="top"></td></tr>
684      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
685      <tr><td class="lineno" valign="top"></td><td class="left">   Closed issues:</td><td> </td><td class="right">   Closed issues:</td><td class="lineno" valign="top"></td></tr>
686      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
687      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/147&gt;: "serving</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/147&gt;: "serving</td><td class="lineno" valign="top"></td></tr>
688      <tr><td class="lineno" valign="top"></td><td class="left">      negotiated responses from cache: header-specific canonicalization"</td><td> </td><td class="right">      negotiated responses from cache: header-specific canonicalization"</td><td class="lineno" valign="top"></td></tr>
689      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
690      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/197&gt;: "Effect of CC</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/197&gt;: "Effect of CC</td><td class="lineno" valign="top"></td></tr>
691      <tr><td class="lineno" valign="top"></td><td class="left">      directives on history lists"</td><td> </td><td class="right">      directives on history lists"</td><td class="lineno" valign="top"></td></tr>
692      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
693      <tr><td><a name="diff0039" /></td></tr>
694      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/291&gt;: "Cache</span></td><td class="lineno" valign="top"></td></tr>
695      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      Extensions can override no-store, etc."</span></td><td class="lineno" valign="top"></td></tr>
696      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
697      <tr><td class="lineno" valign="top"></td><td class="left">   Affected issues:</td><td> </td><td class="right">   Affected issues:</td><td class="lineno" valign="top"></td></tr>
698      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
699      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/199&gt;: Status codes</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/199&gt;: Status codes</td><td class="lineno" valign="top"></td></tr>
700      <tr><td class="lineno" valign="top"></td><td class="left">      and caching</td><td> </td><td class="right">      and caching</td><td class="lineno" valign="top"></td></tr>
701      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
702      <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>
703      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
704      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/60&gt;: "Placement of</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/60&gt;: "Placement of</td><td class="lineno" valign="top"></td></tr>
705      <tr><td class="lineno" valign="top"></td><td class="left">      13.5.1 and 13.5.2"</td><td> </td><td class="right">      13.5.1 and 13.5.2"</td><td class="lineno" valign="top"></td></tr>
706      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
707      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
708      <tr bgcolor="gray" ><td></td><th><a name="part-l19" /><small>skipping to change at</small><em> page 38, line 18</em></th><th> </th><th><a name="part-r19" /><small>skipping to change at</small><em> page 38, line 21</em></th><td></td></tr>
709      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
710      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/109&gt;: "Clarify</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/109&gt;: "Clarify</td><td class="lineno" valign="top"></td></tr>
711      <tr><td class="lineno" valign="top"></td><td class="left">      entity / representation / variant terminology"</td><td> </td><td class="right">      entity / representation / variant terminology"</td><td class="lineno" valign="top"></td></tr>
712      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
713      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/220&gt;: "consider</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/220&gt;: "consider</td><td class="lineno" valign="top"></td></tr>
714      <tr><td class="lineno" valign="top"></td><td class="left">      removing the 'changes from 2068' sections"</td><td> </td><td class="right">      removing the 'changes from 2068' sections"</td><td class="lineno" valign="top"></td></tr>
715      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
716      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/223&gt;: "Allowing</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/223&gt;: "Allowing</td><td class="lineno" valign="top"></td></tr>
717      <tr><td class="lineno" valign="top"></td><td class="left">      heuristic caching for new status codes"</td><td> </td><td class="right">      heuristic caching for new status codes"</td><td class="lineno" valign="top"></td></tr>
718      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
719      <tr><td><a name="diff0040" /></td></tr>
720      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/223&gt;: "Allowing</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
721      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      heuristic caching for new status codes"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
722      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
723      <tr><td class="lineno" valign="top"></td><td class="left">   o  Clean up TODOs and prose in "Combining Responses."</td><td> </td><td class="right">   o  Clean up TODOs and prose in "Combining Responses."</td><td class="lineno" valign="top"></td></tr>
724      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
725      <tr><td class="lineno" valign="top"></td><td class="left">C.13.  Since draft-ietf-httpbis-p6-cache-11</td><td> </td><td class="right">C.13.  Since draft-ietf-httpbis-p6-cache-11</td><td class="lineno" valign="top"></td></tr>
726      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
727      <tr><td class="lineno" valign="top"></td><td class="left">   Closed issues:</td><td> </td><td class="right">   Closed issues:</td><td class="lineno" valign="top"></td></tr>
728      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
729      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/204&gt;: "Text about</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/204&gt;: "Text about</td><td class="lineno" valign="top"></td></tr>
730      <tr><td class="lineno" valign="top"></td><td class="left">      clock requirement for caches belongs in p6"</td><td> </td><td class="right">      clock requirement for caches belongs in p6"</td><td class="lineno" valign="top"></td></tr>
731      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
732      <tr><td class="lineno" valign="top"></td><td class="left">C.14.  Since draft-ietf-httpbis-p6-cache-12</td><td> </td><td class="right">C.14.  Since draft-ietf-httpbis-p6-cache-12</td><td class="lineno" valign="top"></td></tr>
733      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
734      <tr bgcolor="gray" ><td></td><th><a name="part-l20" /><small>skipping to change at</small><em> page 38, line 47</em></th><th> </th><th><a name="part-r20" /><small>skipping to change at</small><em> page 38, line 47</em></th><td></td></tr>
735      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/268&gt;: "Clarify</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/268&gt;: "Clarify</td><td class="lineno" valign="top"></td></tr>
736      <tr><td class="lineno" valign="top"></td><td class="left">      'public'"</td><td> </td><td class="right">      'public'"</td><td class="lineno" valign="top"></td></tr>
737      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
738      <tr><td class="lineno" valign="top"></td><td class="left">C.15.  Since draft-ietf-httpbis-p6-cache-13</td><td> </td><td class="right">C.15.  Since draft-ietf-httpbis-p6-cache-13</td><td class="lineno" valign="top"></td></tr>
739      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
740      <tr><td class="lineno" valign="top"></td><td class="left">   Closed issues:</td><td> </td><td class="right">   Closed issues:</td><td class="lineno" valign="top"></td></tr>
741      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
742      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/276&gt;: "untangle</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/276&gt;: "untangle</td><td class="lineno" valign="top"></td></tr>
743      <tr><td class="lineno" valign="top"></td><td class="left">      ABNFs for header fields"</td><td> </td><td class="right">      ABNFs for header fields"</td><td class="lineno" valign="top"></td></tr>
744      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
745      <tr><td><a name="diff0041" /></td></tr>
746      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">C.16.  Since draft-ietf-httpbis-p6-cache-14</span></td><td class="lineno" valign="top"></td></tr>
747      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></