source: draft-ietf-httpbis/diffs/draft-ietf-httpbis-p6-cache-25-from-24.diff.html @ 2650

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prepare publication of -25 drafts on 2013-11-17

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38  <tr bgcolor="orange"><th></th><th>&nbsp;draft-ietf-httpbis-p6-cache-24.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p6-cache-25.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)                         M. Nottingham, Ed.</td><td> </td><td class="right">Obsoletes: 2616 (if approved)                         M. Nottingham, Ed.</td><td class="lineno" valign="top"></td></tr>
43      <tr><td class="lineno" valign="top"></td><td class="left">Intended status: Standards Track                                  Akamai</td><td> </td><td class="right">Intended status: Standards Track                                  Akamai</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: Ma<span class="delete">rch 29, 2014</span>                                  J. Reschke, Ed.</td><td> </td><td class="rblock">Expires: Ma<span class="insert">y 21, 2014  </span>                                  J. Reschke, Ed.</td><td class="lineno" valign="top"></td></tr>
46      <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>
47      <tr><td><a name="diff0002" /></td></tr>
48      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                      <span class="delete">September 25</span>, 2013</td><td> </td><td class="rblock">                                                      <span class="insert"> November 17</span>, 2013</td><td class="lineno" valign="top"></td></tr>
49      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
50      <tr><td class="lineno" valign="top"></td><td class="left">            Hypertext Transfer Protocol (HTTP/1.1): Caching</td><td> </td><td class="right">            Hypertext Transfer Protocol (HTTP/1.1): Caching</td><td class="lineno" valign="top"></td></tr>
51      <tr><td><a name="diff0003" /></td></tr>
52      <tr><td class="lineno" valign="top"></td><td class="lblock">                     draft-ietf-httpbis-p6-cache-2<span class="delete">4</span></td><td> </td><td class="rblock">                     draft-ietf-httpbis-p6-cache-2<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
53      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
54      <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>
55      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
56      <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>
57      <tr><td class="lineno" valign="top"></td><td class="left">   protocol for distributed, collaborative, hypertext information</td><td> </td><td class="right">   protocol for distributed, collaborative, hypertext information</td><td class="lineno" valign="top"></td></tr>
58      <tr><td class="lineno" valign="top"></td><td class="left">   systems.  This document defines requirements on HTTP caches and the</td><td> </td><td class="right">   systems.  This document defines requirements on HTTP caches and the</td><td class="lineno" valign="top"></td></tr>
59      <tr><td class="lineno" valign="top"></td><td class="left">   associated header fields that control cache behavior or indicate</td><td> </td><td class="right">   associated header fields that control cache behavior or indicate</td><td class="lineno" valign="top"></td></tr>
60      <tr><td class="lineno" valign="top"></td><td class="left">   cacheable response messages.</td><td> </td><td class="right">   cacheable response messages.</td><td class="lineno" valign="top"></td></tr>
61      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
62      <tr><td class="lineno" valign="top"></td><td class="left">Editorial Note (To be removed by RFC Editor)</td><td> </td><td class="right">Editorial Note (To be removed by RFC Editor)</td><td class="lineno" valign="top"></td></tr>
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">   Discussion of this draft takes place on the HTTPBIS working group</td><td> </td><td class="right">   Discussion of this draft takes place on the HTTPBIS working group</td><td class="lineno" valign="top"></td></tr>
65      <tr><td class="lineno" valign="top"></td><td class="left">   mailing list (ietf-http-wg@w3.org), which is archived at</td><td> </td><td class="right">   mailing list (ietf-http-wg@w3.org), which is archived at</td><td class="lineno" valign="top"></td></tr>
66      <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>
67      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
68      <tr><td class="lineno" valign="top"></td><td class="left">   The 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>
69      <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>
70      <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>
71      <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>
72      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
73      <tr><td><a name="diff0004" /></td></tr>
74      <tr><td class="lineno" valign="top"></td><td class="lblock">   The changes in this draft are summarized in Appendix D.<span class="delete">5</span>.</td><td> </td><td class="rblock">   The changes in this draft are summarized in Appendix D.<span class="insert">1</span>.</td><td class="lineno" valign="top"></td></tr>
75      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
76      <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>
77      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
78      <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>
79      <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>
80      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
81      <tr><td class="lineno" valign="top"></td><td class="left">   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>
82      <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>
83      <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>
84      <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>
85      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
86      <tr><td class="lineno" valign="top"></td><td class="left">   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>
87      <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>
88      <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>
89      <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>
90      <tr><td><a name="diff0005" /></td></tr>
91      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on Ma<span class="delete">rch 29</span>, 2014.</td><td> </td><td class="rblock">   This Internet-Draft will expire on Ma<span class="insert">y 21</span>, 2014.</td><td class="lineno" valign="top"></td></tr>
92      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
93      <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>
94      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
95      <tr><td class="lineno" valign="top"></td><td class="left">   Copyright (c) 2013 IETF Trust and the persons identified as the</td><td> </td><td class="right">   Copyright (c) 2013 IETF Trust and the persons identified as the</td><td class="lineno" valign="top"></td></tr>
96      <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>
97      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
98      <tr><td class="lineno" valign="top"></td><td class="left">   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>
99      <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>
100      <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>
101      <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>
102      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
103      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 2, line 43</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 2, line 43</em></th><td></td></tr>
104      <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>
105      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
106      <tr><td class="lineno" valign="top"></td><td class="left">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4</td><td> </td><td class="right">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
107      <tr><td class="lineno" valign="top"></td><td class="left">     1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4</td><td> </td><td class="right">     1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
108      <tr><td class="lineno" valign="top"></td><td class="left">     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4</td><td> </td><td class="right">     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
109      <tr><td class="lineno" valign="top"></td><td class="left">       1.2.1.  Delta Seconds  . . . . . . . . . . . . . . . . . . . .  5</td><td> </td><td class="right">       1.2.1.  Delta Seconds  . . . . . . . . . . . . . . . . . . . .  5</td><td class="lineno" valign="top"></td></tr>
110      <tr><td class="lineno" valign="top"></td><td class="left">   2.  Overview of Cache Operation  . . . . . . . . . . . . . . . . .  5</td><td> </td><td class="right">   2.  Overview of Cache Operation  . . . . . . . . . . . . . . . . .  5</td><td class="lineno" valign="top"></td></tr>
111      <tr><td class="lineno" valign="top"></td><td class="left">   3.  Storing Responses in Caches  . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">   3.  Storing Responses in Caches  . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
112      <tr><td class="lineno" valign="top"></td><td class="left">     3.1.  Storing Incomplete Responses . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">     3.1.  Storing Incomplete Responses . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
113      <tr><td class="lineno" valign="top"></td><td class="left">     3.2.  Storing Responses to Authenticated Requests  . . . . . . .  7</td><td> </td><td class="right">     3.2.  Storing Responses to Authenticated Requests  . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
114      <tr><td><a name="diff0006" /></td></tr>
115      <tr><td class="lineno" valign="top"></td><td class="lblock">     3.3.  Combining Partial Content  . . . . . . . . . . . . . . . .  <span class="delete">7</span></td><td> </td><td class="rblock">     3.3.  Combining Partial Content  . . . . . . . . . . . . . . . .  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
116      <tr><td class="lineno" valign="top"></td><td class="left">   4.  Constructing Responses from Caches . . . . . . . . . . . . . .  8</td><td> </td><td class="right">   4.  Constructing Responses from Caches . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
117      <tr><td class="lineno" valign="top"></td><td class="left">     4.1.  Calculating Secondary Keys with Vary . . . . . . . . . . .  9</td><td> </td><td class="right">     4.1.  Calculating Secondary Keys with Vary . . . . . . . . . . .  9</td><td class="lineno" valign="top"></td></tr>
118      <tr><td class="lineno" valign="top"></td><td class="left">     4.2.  Freshness  . . . . . . . . . . . . . . . . . . . . . . . . 10</td><td> </td><td class="right">     4.2.  Freshness  . . . . . . . . . . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
119      <tr><td class="lineno" valign="top"></td><td class="left">       4.2.1.  Calculating Freshness Lifetime . . . . . . . . . . . . 12</td><td> </td><td class="right">       4.2.1.  Calculating Freshness Lifetime . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
120      <tr><td class="lineno" valign="top"></td><td class="left">       4.2.2.  Calculating Heuristic Freshness  . . . . . . . . . . . 12</td><td> </td><td class="right">       4.2.2.  Calculating Heuristic Freshness  . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
121      <tr><td class="lineno" valign="top"></td><td class="left">       4.2.3.  Calculating Age  . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="right">       4.2.3.  Calculating Age  . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
122      <tr><td><a name="diff0007" /></td></tr>
123      <tr><td class="lineno" valign="top"></td><td class="lblock">       4.2.4.  Serving Stale Responses  . . . . . . . . . . . . . . . 1<span class="delete">4</span></td><td> </td><td class="rblock">       4.2.4.  Serving Stale Responses  . . . . . . . . . . . . . . . 1<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
124      <tr><td class="lineno" valign="top"></td><td class="left">     4.3.  Validation . . . . . . . . . . . . . . . . . . . . . . . . 15</td><td> </td><td class="right">     4.3.  Validation . . . . . . . . . . . . . . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
125      <tr><td class="lineno" valign="top"></td><td class="left">       4.3.1.  Sending a Validation Request . . . . . . . . . . . . . 15</td><td> </td><td class="right">       4.3.1.  Sending a Validation Request . . . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="left">       4.3.2.  Handling a Received Validation Request . . . . . . . . 16</td><td> </td><td class="right">       4.3.2.  Handling a Received Validation Request . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="left">       4.3.3.  Handling a Validation Response . . . . . . . . . . . . 17</td><td> </td><td class="right">       4.3.3.  Handling a Validation Response . . . . . . . . . . . . 17</td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="left">       4.3.4.  Freshening Stored Responses upon Validation  . . . . . 18</td><td> </td><td class="right">       4.3.4.  Freshening Stored Responses upon Validation  . . . . . 18</td><td class="lineno" valign="top"></td></tr>
129      <tr><td><a name="diff0008" /></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="lblock">       4.3.5.  Freshening Responses via HEAD  . . . . . . . . . . . . 1<span class="delete">8</span></td><td> </td><td class="rblock">       4.3.5.  Freshening Responses via HEAD  . . . . . . . . . . . . 1<span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
131      <tr><td class="lineno" valign="top"></td><td class="left">     4.4.  Invalidation . . . . . . . . . . . . . . . . . . . . . . . 19</td><td> </td><td class="right">     4.4.  Invalidation . . . . . . . . . . . . . . . . . . . . . . . 19</td><td class="lineno" valign="top"></td></tr>
132      <tr><td class="lineno" valign="top"></td><td class="left">   5.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 20</td><td> </td><td class="right">   5.  Header Field Definitions . . . . . . . . . . . . . . . . . . . 20</td><td class="lineno" valign="top"></td></tr>
133      <tr><td class="lineno" valign="top"></td><td class="left">     5.1.  Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 20</td><td> </td><td class="right">     5.1.  Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 20</td><td class="lineno" valign="top"></td></tr>
134      <tr><td><a name="diff0009" /></td></tr>
135      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.2.  Cache-Control  . . . . . . . . . . . . . . . . . . . . . . 2<span class="delete">0</span></td><td> </td><td class="rblock">     5.2.  Cache-Control  . . . . . . . . . . . . . . . . . . . . . . 2<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
136      <tr><td class="lineno" valign="top"></td><td class="left">       5.2.1.  Request Cache-Control Directives . . . . . . . . . . . 21</td><td> </td><td class="right">       5.2.1.  Request Cache-Control Directives . . . . . . . . . . . 21</td><td class="lineno" valign="top"></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="left">       5.2.2.  Response Cache-Control Directives  . . . . . . . . . . 23</td><td> </td><td class="right">       5.2.2.  Response Cache-Control Directives  . . . . . . . . . . 23</td><td class="lineno" valign="top"></td></tr>
138      <tr><td class="lineno" valign="top"></td><td class="left">       5.2.3.  Cache Control Extensions . . . . . . . . . . . . . . . 26</td><td> </td><td class="right">       5.2.3.  Cache Control Extensions . . . . . . . . . . . . . . . 26</td><td class="lineno" valign="top"></td></tr>
139      <tr><td class="lineno" valign="top"></td><td class="left">     5.3.  Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 27</td><td> </td><td class="right">     5.3.  Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 27</td><td class="lineno" valign="top"></td></tr>
140      <tr><td class="lineno" valign="top"></td><td class="left">     5.4.  Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 28</td><td> </td><td class="right">     5.4.  Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 28</td><td class="lineno" valign="top"></td></tr>
141      <tr><td class="lineno" valign="top"></td><td class="left">     5.5.  Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 29</td><td> </td><td class="right">     5.5.  Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 29</td><td class="lineno" valign="top"></td></tr>
142      <tr><td><a name="diff0010" /></td></tr>
143      <tr><td class="lineno" valign="top"></td><td class="lblock">       5.5.1.  Warning: 110 - "Response is Stale" . . . . . . . . . . 3<span class="delete">0</span></td><td> </td><td class="rblock">       5.5.1.  Warning: 110 - "Response is Stale" . . . . . . . . . . 3<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
144      <tr><td class="lineno" valign="top"></td><td class="left">       5.5.2.  Warning: 111 - "Revalidation Failed" . . . . . . . . . 31</td><td> </td><td class="right">       5.5.2.  Warning: 111 - "Revalidation Failed" . . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
145      <tr><td class="lineno" valign="top"></td><td class="left">       5.5.3.  Warning: 112 - "Disconnected Operation"  . . . . . . . 31</td><td> </td><td class="right">       5.5.3.  Warning: 112 - "Disconnected Operation"  . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
146      <tr><td class="lineno" valign="top"></td><td class="left">       5.5.4.  Warning: 113 - "Heuristic Expiration"  . . . . . . . . 31</td><td> </td><td class="right">       5.5.4.  Warning: 113 - "Heuristic Expiration"  . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
147      <tr><td class="lineno" valign="top"></td><td class="left">       5.5.5.  Warning: 199 - "Miscellaneous Warning" . . . . . . . . 31</td><td> </td><td class="right">       5.5.5.  Warning: 199 - "Miscellaneous Warning" . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
148      <tr><td class="lineno" valign="top"></td><td class="left">       5.5.6.  Warning: 214 - "Transformation Applied"  . . . . . . . 31</td><td> </td><td class="right">       5.5.6.  Warning: 214 - "Transformation Applied"  . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
149      <tr><td class="lineno" valign="top"></td><td class="left">       5.5.7.  Warning: 299 - "Miscellaneous Persistent Warning"  . . 31</td><td> </td><td class="right">       5.5.7.  Warning: 299 - "Miscellaneous Persistent Warning"  . . 31</td><td class="lineno" valign="top"></td></tr>
150      <tr><td class="lineno" valign="top"></td><td class="left">   6.  History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 31</td><td> </td><td class="right">   6.  History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 31</td><td class="lineno" valign="top"></td></tr>
151      <tr><td class="lineno" valign="top"></td><td class="left">   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 32</td><td> </td><td class="right">   7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 32</td><td class="lineno" valign="top"></td></tr>
152      <tr><td class="lineno" valign="top"></td><td class="left">     7.1.  Cache Directive Registry . . . . . . . . . . . . . . . . . 32</td><td> </td><td class="right">     7.1.  Cache Directive Registry . . . . . . . . . . . . . . . . . 32</td><td class="lineno" valign="top"></td></tr>
153      <tr><td class="lineno" valign="top"></td><td class="left">       7.1.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 32</td><td> </td><td class="right">       7.1.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 32</td><td class="lineno" valign="top"></td></tr>
154      <tr><td class="lineno" valign="top"></td><td class="left">       7.1.2.  Considerations for New Cache Control Directives  . . . 32</td><td> </td><td class="right">       7.1.2.  Considerations for New Cache Control Directives  . . . 32</td><td class="lineno" valign="top"></td></tr>
155      <tr><td><a name="diff0011" /></td></tr>
156      <tr><td class="lineno" valign="top"></td><td class="lblock">       7.1.3.  Registrations  . . . . . . . . . . . . . . . . . . . . 3<span class="delete">2</span></td><td> </td><td class="rblock">       7.1.3.  Registrations  . . . . . . . . . . . . . . . . . . . . 3<span class="insert">3</span></td><td class="lineno" valign="top"></td></tr>
157      <tr><td class="lineno" valign="top"></td><td class="left">     7.2.  Warn Code Registry . . . . . . . . . . . . . . . . . . . . 33</td><td> </td><td class="right">     7.2.  Warn Code Registry . . . . . . . . . . . . . . . . . . . . 33</td><td class="lineno" valign="top"></td></tr>
158      <tr><td class="lineno" valign="top"></td><td class="left">       7.2.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 33</td><td> </td><td class="right">       7.2.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 33</td><td class="lineno" valign="top"></td></tr>
159      <tr><td class="lineno" valign="top"></td><td class="left">       7.2.2.  Registrations  . . . . . . . . . . . . . . . . . . . . 33</td><td> </td><td class="right">       7.2.2.  Registrations  . . . . . . . . . . . . . . . . . . . . 33</td><td class="lineno" valign="top"></td></tr>
160      <tr><td class="lineno" valign="top"></td><td class="left">     7.3.  Header Field Registration  . . . . . . . . . . . . . . . . 34</td><td> </td><td class="right">     7.3.  Header Field Registration  . . . . . . . . . . . . . . . . 34</td><td class="lineno" valign="top"></td></tr>
161      <tr><td class="lineno" valign="top"></td><td class="left">   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 34</td><td> </td><td class="right">   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 34</td><td class="lineno" valign="top"></td></tr>
162      <tr><td class="lineno" valign="top"></td><td class="left">   9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 35</td><td> </td><td class="right">   9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 35</td><td class="lineno" valign="top"></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="left">   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 35</td><td> </td><td class="right">   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 35</td><td class="lineno" valign="top"></td></tr>
164      <tr><td class="lineno" valign="top"></td><td class="left">     10.1. Normative References . . . . . . . . . . . . . . . . . . . 35</td><td> </td><td class="right">     10.1. Normative References . . . . . . . . . . . . . . . . . . . 35</td><td class="lineno" valign="top"></td></tr>
165      <tr><td class="lineno" valign="top"></td><td class="left">     10.2. Informative References . . . . . . . . . . . . . . . . . . 36</td><td> </td><td class="right">     10.2. Informative References . . . . . . . . . . . . . . . . . . 36</td><td class="lineno" valign="top"></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix A.  Changes from RFC 2616 . . . . . . . . . . . . . . . . 36</td><td> </td><td class="right">   Appendix A.  Changes from RFC 2616 . . . . . . . . . . . . . . . . 36</td><td class="lineno" valign="top"></td></tr>
167      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . 38</td><td> </td><td class="right">   Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 38</td><td> </td><td class="right">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix D.  Change Log (to be removed by RFC Editor before</td><td> </td><td class="right">   Appendix D.  Change Log (to be removed by RFC Editor before</td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno" valign="top"></td><td class="left">                publication)  . . . . . . . . . . . . . . . . . . . . 39</td><td> </td><td class="right">                publication)  . . . . . . . . . . . . . . . . . . . . 39</td><td class="lineno" valign="top"></td></tr>
171      <tr><td><a name="diff0012" /></td></tr>
172      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.1.  Since <span class="delete">draft-ietf-httpbis-p6-cache-19</span> . . . . . . . . . . . 40</td><td> </td><td class="rblock">     D.1.  Since <span class="insert">draft-ietf-httpbis-p6-cache-24</span> . . . . . . . . . . . 40</td><td class="lineno" valign="top"></td></tr>
173      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">D.2.  Since draft-ietf-httpbis-p6-cache-20 . . . . . . . . . . . 40</span></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">40</span></td><td class="lineno" valign="top"></td></tr>
174      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     D.3.  Since draft-ietf-httpbis-p6-cache-21 . . . . . . . . . . . 41</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
175      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     D.4.  Since draft-ietf-httpbis-p6-cache-22 . . . . . . . . . . . 41</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
176      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     D.5.  Since draft-ietf-httpbis-p6-cache-23 . . . . . . . . . . . 41</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="lblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">41</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
178      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
179      <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>
180      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
181      <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>
182      <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>
183      <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>
184      <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>
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">   An HTTP cache is a local store of response messages and the subsystem</td><td> </td><td class="right">   An HTTP cache is a local store of response messages and the subsystem</td><td class="lineno" valign="top"></td></tr>
187      <tr><td class="lineno" valign="top"></td><td class="left">   that controls storage, retrieval, and deletion of messages in it.  A</td><td> </td><td class="right">   that controls storage, retrieval, and deletion of messages in it.  A</td><td class="lineno" valign="top"></td></tr>
188      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
189      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 5, line 12</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 5, line 12</em></th><td></td></tr>
190      <tr><td class="lineno" valign="top"></td><td class="left">   documents.  Appendix C shows the collected ABNF with the list rule</td><td> </td><td class="right">   documents.  Appendix C shows the collected ABNF with the list rule</td><td class="lineno" valign="top"></td></tr>
191      <tr><td class="lineno" valign="top"></td><td class="left">   expanded.</td><td> </td><td class="right">   expanded.</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">1.2.1.  Delta Seconds</td><td> </td><td class="right">1.2.1.  Delta Seconds</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" valign="top"></td><td class="left">   The delta-seconds rule specifies a non-negative integer, representing</td><td> </td><td class="right">   The delta-seconds rule specifies a non-negative integer, representing</td><td class="lineno" valign="top"></td></tr>
196      <tr><td class="lineno" valign="top"></td><td class="left">   time in seconds.</td><td> </td><td class="right">   time in seconds.</td><td class="lineno" valign="top"></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
198      <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>
199      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
200      <tr><td><a name="diff0013" /></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="lblock">   If a cache receives a delta-seconds value <span class="delete">larger</span> than the <span class="delete">largest</span></td><td> </td><td class="rblock">   <span class="insert">A recipient parsing a delta-seconds value and converting it to binary</span></td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   positive</span> integer it can represent, or if any of its subsequent</td><td> </td><td class="rblock"><span class="insert">   form ought to use an arithmetic type of at least 31 bits of non-</span></td><td class="lineno" valign="top"></td></tr>
203      <tr><td class="lineno" valign="top"></td><td class="lblock">   calculations overflows, the cache MUST consider the value to be</td><td> </td><td class="rblock"><span class="insert">   negative integer range.</span>  If a cache receives a delta-seconds value</td><td class="lineno" valign="top"></td></tr>
204      <tr><td class="lineno" valign="top"></td><td class="lblock">   2147483648 <span class="delete">(2^31).  A recipient parsing a delta-seconds</span> value <span class="delete">MUST</span></td><td> </td><td class="rblock">   <span class="insert">greater</span> than the <span class="insert">greatest</span> integer it can represent, or if any of its</td><td class="lineno" valign="top"></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   use</span> an arithmetic type of <span class="delete">at least 31 bits of range,</span> and a <span class="delete">sender</span></td><td> </td><td class="rblock">   subsequent calculations overflows, the cache MUST consider the value</td><td class="lineno" valign="top"></td></tr>
206      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   MUST NOT generate delta-seconds with a</span> value <span class="delete">greater than 2147483648.</span></td><td> </td><td class="rblock">   to be <span class="insert">either</span> 2147483648 <span class="insert">(2^31) or the greatest positive integer it</span></td><td class="lineno" valign="top"></td></tr>
207      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   can conveniently represent.</span></td><td class="lineno" valign="top"></td></tr>
208      <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>
209      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      Note: The</span> value <span class="insert">2147483648 is here for historical reasons,</span></td><td class="lineno" valign="top"></td></tr>
210      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      effectively represents infinity (over 68 years), and does not need</span></td><td class="lineno" valign="top"></td></tr>
211      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      to be stored in binary form; an implementation could produce it as</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">      a canned string if any overflow occurs, even if the calculations</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">      are performed with</span> an arithmetic type <span class="insert">incapable</span> of <span class="insert">directly</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">      representing that number.  What matters here is that an overflow</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">      be detected</span> and <span class="insert">not treated as</span> a <span class="insert">negative</span> value <span class="insert">in later</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">      calculations.</span></td><td class="lineno" valign="top"></td></tr>
217      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
218      <tr><td class="lineno" valign="top"></td><td class="left">2.  Overview of Cache Operation</td><td> </td><td class="right">2.  Overview of Cache Operation</td><td class="lineno" valign="top"></td></tr>
219      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
220      <tr><td class="lineno" valign="top"></td><td class="left">   Proper cache operation preserves the semantics of HTTP transfers</td><td> </td><td class="right">   Proper cache operation preserves the semantics of HTTP transfers</td><td class="lineno" valign="top"></td></tr>
221      <tr><td class="lineno" valign="top"></td><td class="left">   ([Part2]) while eliminating the transfer of information already held</td><td> </td><td class="right">   ([Part2]) while eliminating the transfer of information already held</td><td class="lineno" valign="top"></td></tr>
222      <tr><td class="lineno" valign="top"></td><td class="left">   in the cache.  Although caching is an entirely OPTIONAL feature of</td><td> </td><td class="right">   in the cache.  Although caching is an entirely OPTIONAL feature of</td><td class="lineno" valign="top"></td></tr>
223      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP, we assume that reusing the cached response is desirable and</td><td> </td><td class="right">   HTTP, we assume that reusing the cached response is desirable and</td><td class="lineno" valign="top"></td></tr>
224      <tr><td class="lineno" valign="top"></td><td class="left">   that such reuse is the default behavior when no requirement or local</td><td> </td><td class="right">   that such reuse is the default behavior when no requirement or local</td><td class="lineno" valign="top"></td></tr>
225      <tr><td class="lineno" valign="top"></td><td class="left">   configuration prevents it.  Therefore, HTTP cache requirements are</td><td> </td><td class="right">   configuration prevents it.  Therefore, HTTP cache requirements are</td><td class="lineno" valign="top"></td></tr>
226      <tr><td class="lineno" valign="top"></td><td class="left">   focused on preventing a cache from either storing a non-reusable</td><td> </td><td class="right">   focused on preventing a cache from either storing a non-reusable</td><td class="lineno" valign="top"></td></tr>
227      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
228      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 6, line 37</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 6, line 46</em></th><td></td></tr>
229      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="left">      *  contains a max-age response cache directive (see</td><td> </td><td class="right">      *  contains a max-age response cache directive (see</td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno" valign="top"></td><td class="left">         Section 5.2.2.8), or</td><td> </td><td class="right">         Section 5.2.2.8), or</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">      *  contains a s-maxage response cache directive (see</td><td> </td><td class="right">      *  contains a s-maxage response cache directive (see</td><td class="lineno" valign="top"></td></tr>
234      <tr><td class="lineno" valign="top"></td><td class="left">         Section 5.2.2.9) and the cache is shared, or</td><td> </td><td class="right">         Section 5.2.2.9) and the cache is shared, or</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" valign="top"></td><td class="left">      *  contains a Cache Control Extension (see Section 5.2.3) that</td><td> </td><td class="right">      *  contains a Cache Control Extension (see Section 5.2.3) that</td><td class="lineno" valign="top"></td></tr>
237      <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>
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><a name="diff0014" /></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="lblock">      *  has a status code that is defined as cacheable (see</td><td> </td><td class="rblock">      *  has a status code that is defined as cacheable <span class="insert">by default </span>(see</td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="left">         Section 4.2.2), or</td><td> </td><td class="right">         Section 4.2.2), or</td><td class="lineno" valign="top"></td></tr>
242      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
243      <tr><td class="lineno" valign="top"></td><td class="left">      *  contains a public response cache directive (see</td><td> </td><td class="right">      *  contains a public response cache directive (see</td><td class="lineno" valign="top"></td></tr>
244      <tr><td class="lineno" valign="top"></td><td class="left">         Section 5.2.2.5).</td><td> </td><td class="right">         Section 5.2.2.5).</td><td class="lineno" valign="top"></td></tr>
245      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
246      <tr><td class="lineno" valign="top"></td><td class="left">   Note that any of the requirements listed above can be overridden by a</td><td> </td><td class="right">   Note that any of the requirements listed above can be overridden by a</td><td class="lineno" valign="top"></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="left">   cache-control extension; see Section 5.2.3.</td><td> </td><td class="right">   cache-control extension; see Section 5.2.3.</td><td class="lineno" valign="top"></td></tr>
248      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
249      <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>
250      <tr><td class="lineno" valign="top"></td><td class="left">   response status code if it recognizes it and implements all specified</td><td> </td><td class="right">   response status code if it recognizes it and implements all specified</td><td class="lineno" valign="top"></td></tr>
251      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
252      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 12, line 45</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 13, line 4</em></th><td></td></tr>
253      <tr><td class="lineno" valign="top"></td><td class="left">   a cache MAY assign a heuristic expiration time when an explicit time</td><td> </td><td class="right">   a cache MAY assign a heuristic expiration time when an explicit time</td><td class="lineno" valign="top"></td></tr>
254      <tr><td class="lineno" valign="top"></td><td class="left">   is not specified, employing algorithms that use other header field</td><td> </td><td class="right">   is not specified, employing algorithms that use other header field</td><td class="lineno" valign="top"></td></tr>
255      <tr><td class="lineno" valign="top"></td><td class="left">   values (such as the Last-Modified time) to estimate a plausible</td><td> </td><td class="right">   values (such as the Last-Modified time) to estimate a plausible</td><td class="lineno" valign="top"></td></tr>
256      <tr><td class="lineno" valign="top"></td><td class="left">   expiration time.  This specification does not provide specific</td><td> </td><td class="right">   expiration time.  This specification does not provide specific</td><td class="lineno" valign="top"></td></tr>
257      <tr><td class="lineno" valign="top"></td><td class="left">   algorithms, but does impose worst-case constraints on their results.</td><td> </td><td class="right">   algorithms, but does impose worst-case constraints on their results.</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">   A cache MUST NOT use heuristics to determine freshness when an</td><td> </td><td class="right">   A cache MUST NOT use heuristics to determine freshness when an</td><td class="lineno" valign="top"></td></tr>
260      <tr><td class="lineno" valign="top"></td><td class="left">   explicit expiration time is present in the stored response.  Because</td><td> </td><td class="right">   explicit expiration time is present in the stored response.  Because</td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="left">   of the requirements in Section 3, this means that, effectively,</td><td> </td><td class="right">   of the requirements in Section 3, this means that, effectively,</td><td class="lineno" valign="top"></td></tr>
262      <tr><td class="lineno" valign="top"></td><td class="left">   heuristics can only be used on responses without explicit freshness</td><td> </td><td class="right">   heuristics can only be used on responses without explicit freshness</td><td class="lineno" valign="top"></td></tr>
263      <tr><td><a name="diff0015" /></td></tr>
264      <tr><td class="lineno" valign="top"></td><td class="lblock">   whose status codes are defined as <span class="delete">cacheable,</span> and responses without</td><td> </td><td class="rblock">   whose status codes are defined as <span class="insert">cacheable by default (see Section</span></td><td class="lineno" valign="top"></td></tr>
265      <tr><td class="lineno" valign="top"></td><td class="lblock">   explicit freshness that have been marked as explicitly cacheable</td><td> </td><td class="rblock"><span class="insert">   6.1 of [Part2]),</span> and <span class="insert">those</span> responses without explicit freshness that</td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno" valign="top"></td><td class="lblock">   (e.g., with a "public" response cache directive).</td><td> </td><td class="rblock">   have been marked as explicitly cacheable (e.g., with a "public"</td><td class="lineno" valign="top"></td></tr>
267      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   response cache directive).</td><td class="lineno" valign="top"></td></tr>
268      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
269      <tr><td class="lineno" valign="top"></td><td class="left">   If the response has a Last-Modified header field (Section 2.2 of</td><td> </td><td class="right">   If the response has a Last-Modified header field (Section 2.2 of</td><td class="lineno" valign="top"></td></tr>
270      <tr><td class="lineno" valign="top"></td><td class="left">   [Part4]), caches are encouraged to use a heuristic expiration value</td><td> </td><td class="right">   [Part4]), caches are encouraged to use a heuristic expiration value</td><td class="lineno" valign="top"></td></tr>
271      <tr><td class="lineno" valign="top"></td><td class="left">   that is no more than some fraction of the interval since that time.</td><td> </td><td class="right">   that is no more than some fraction of the interval since that time.</td><td class="lineno" valign="top"></td></tr>
272      <tr><td class="lineno" valign="top"></td><td class="left">   A typical setting of this fraction might be 10%.</td><td> </td><td class="right">   A typical setting of this fraction might be 10%.</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">   When a heuristic is used to calculate freshness lifetime, a cache</td><td> </td><td class="right">   When a heuristic is used to calculate freshness lifetime, a cache</td><td class="lineno" valign="top"></td></tr>
275      <tr><td class="lineno" valign="top"></td><td class="left">   SHOULD generate a Warning header field with a 113 warn-code (see</td><td> </td><td class="right">   SHOULD generate a Warning header field with a 113 warn-code (see</td><td class="lineno" valign="top"></td></tr>
276      <tr><td class="lineno" valign="top"></td><td class="left">   Section 5.5.4) in the response if its current_age is more than 24</td><td> </td><td class="right">   Section 5.5.4) in the response if its current_age is more than 24</td><td class="lineno" valign="top"></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="left">   hours and such a warning is not already present.</td><td> </td><td class="right">   hours and such a warning is not already present.</td><td class="lineno" valign="top"></td></tr>
278      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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280      <tr><td class="lineno" valign="top"></td><td class="left">   date_value</td><td> </td><td class="right">   date_value</td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno" valign="top"></td><td class="left">      The term "date_value" denotes the value of the Date header field,</td><td> </td><td class="right">      The term "date_value" denotes the value of the Date header field,</td><td class="lineno" valign="top"></td></tr>
283      <tr><td class="lineno" valign="top"></td><td class="left">      in a form appropriate for arithmetic operations.  See Section</td><td> </td><td class="right">      in a form appropriate for arithmetic operations.  See Section</td><td class="lineno" valign="top"></td></tr>
284      <tr><td class="lineno" valign="top"></td><td class="left">      7.1.1.2 of [Part2] for the definition of the Date header field,</td><td> </td><td class="right">      7.1.1.2 of [Part2] for the definition of the Date header field,</td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="left">      and for requirements regarding responses without it.</td><td> </td><td class="right">      and for requirements regarding responses without it.</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">   now</td><td> </td><td class="right">   now</td><td class="lineno" valign="top"></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
289      <tr><td class="lineno" valign="top"></td><td class="left">      The term "now" means "the current value of the clock at the host</td><td> </td><td class="right">      The term "now" means "the current value of the clock at the host</td><td class="lineno" valign="top"></td></tr>
290      <tr><td><a name="diff0016" /></td></tr>
291      <tr><td class="lineno" valign="top"></td><td class="lblock">      performing the calculation".  A host ought to use NTP ([RFC<span class="delete">13</span>05])</td><td> </td><td class="rblock">      performing the calculation".  A host ought to use NTP ([RFC<span class="insert">59</span>05])</td><td class="lineno" valign="top"></td></tr>
292      <tr><td class="lineno" valign="top"></td><td class="left">      or some similar protocol to synchronize its clocks to Coordinated</td><td> </td><td class="right">      or some similar protocol to synchronize its clocks to Coordinated</td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="left">      Universal Time.</td><td> </td><td class="right">      Universal Time.</td><td class="lineno" valign="top"></td></tr>
294      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
295      <tr><td class="lineno" valign="top"></td><td class="left">   request_time</td><td> </td><td class="right">   request_time</td><td class="lineno" valign="top"></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
297      <tr><td class="lineno" valign="top"></td><td class="left">      The current value of the clock at the host at the time the request</td><td> </td><td class="right">      The current value of the clock at the host at the time the request</td><td class="lineno" valign="top"></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="left">      resulting in the stored response was made.</td><td> </td><td class="right">      resulting in the stored response was made.</td><td class="lineno" valign="top"></td></tr>
299      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
300      <tr><td class="lineno" valign="top"></td><td class="left">   response_time</td><td> </td><td class="right">   response_time</td><td class="lineno" valign="top"></td></tr>
301      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
302      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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304      <tr><td class="lineno" valign="top"></td><td class="left">   Argument syntax:</td><td> </td><td class="right">   Argument syntax:</td><td class="lineno" valign="top"></td></tr>
305      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
306      <tr><td class="lineno" valign="top"></td><td class="left">      delta-seconds (see Section 1.2.1)</td><td> </td><td class="right">      delta-seconds (see Section 1.2.1)</td><td class="lineno" valign="top"></td></tr>
307      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
308      <tr><td class="lineno" valign="top"></td><td class="left">   The "max-age" request directive indicates that the client is</td><td> </td><td class="right">   The "max-age" request directive indicates that the client is</td><td class="lineno" valign="top"></td></tr>
309      <tr><td class="lineno" valign="top"></td><td class="left">   unwilling to accept a response whose age is greater than the</td><td> </td><td class="right">   unwilling to accept a response whose age is greater than the</td><td class="lineno" valign="top"></td></tr>
310      <tr><td class="lineno" valign="top"></td><td class="left">   specified number of seconds.  Unless the max-stale request directive</td><td> </td><td class="right">   specified number of seconds.  Unless the max-stale request directive</td><td class="lineno" valign="top"></td></tr>
311      <tr><td class="lineno" valign="top"></td><td class="left">   is also present, the client is not willing to accept a stale</td><td> </td><td class="right">   is also present, the client is not willing to accept a stale</td><td class="lineno" valign="top"></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="left">   response.</td><td> </td><td class="right">   response.</td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
314      <tr><td><a name="diff0017" /></td></tr>
315      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note:</span> This directive uses the token form of the argument syntax;</td><td> </td><td class="rblock">   This directive uses the token form of the argument syntax; e.g.,</td><td class="lineno" valign="top"></td></tr>
316      <tr><td class="lineno" valign="top"></td><td class="lblock">   e.g., 'max-age=5', not 'max-age="5"'.  A sender SHOULD NOT generate</td><td> </td><td class="rblock">   'max-age=5', not 'max-age="5"'.  A sender SHOULD NOT generate the</td><td class="lineno" valign="top"></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="lblock">   the quoted-string form.</td><td> </td><td class="rblock">   quoted-string form.</td><td class="lineno" valign="top"></td></tr>
318      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
319      <tr><td class="lineno" valign="top"></td><td class="left">5.2.1.2.  max-stale</td><td> </td><td class="right">5.2.1.2.  max-stale</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 class="lineno" valign="top"></td><td class="left">   Argument syntax:</td><td> </td><td class="right">   Argument syntax:</td><td class="lineno" valign="top"></td></tr>
322      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="left">      delta-seconds (see Section 1.2.1)</td><td> </td><td class="right">      delta-seconds (see Section 1.2.1)</td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
325      <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>
326      <tr><td class="lineno" valign="top"></td><td class="left">   willing to accept a response that has exceeded its freshness</td><td> </td><td class="right">   willing to accept a response that has exceeded its freshness</td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="left">   lifetime.  If max-stale is assigned a value, then the client is</td><td> </td><td class="right">   lifetime.  If max-stale is assigned a value, then the client is</td><td class="lineno" valign="top"></td></tr>
328      <tr><td class="lineno" valign="top"></td><td class="left">   willing to accept a response that has exceeded its freshness lifetime</td><td> </td><td class="right">   willing to accept a response that has exceeded its freshness lifetime</td><td class="lineno" valign="top"></td></tr>
329      <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>
330      <tr><td class="lineno" valign="top"></td><td class="left">   assigned to max-stale, then the client is willing to accept a stale</td><td> </td><td class="right">   assigned to max-stale, then the client is willing to accept a stale</td><td class="lineno" valign="top"></td></tr>
331      <tr><td class="lineno" valign="top"></td><td class="left">   response of any age.</td><td> </td><td class="right">   response of any age.</td><td class="lineno" valign="top"></td></tr>
332      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
333      <tr><td><a name="diff0018" /></td></tr>
334      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note:</span> This directive uses the token form of the argument syntax;</td><td> </td><td class="rblock">   This directive uses the token form of the argument syntax; e.g.,</td><td class="lineno" valign="top"></td></tr>
335      <tr><td class="lineno" valign="top"></td><td class="lblock">   e.g., 'max-stale=10', not 'max-stale="10"'.  A sender SHOULD NOT</td><td> </td><td class="rblock">   'max-stale=10', not 'max-stale="10"'.  A sender SHOULD NOT generate</td><td class="lineno" valign="top"></td></tr>
336      <tr><td class="lineno" valign="top"></td><td class="lblock">   generate the quoted-string form.</td><td> </td><td class="rblock">   the quoted-string form.</td><td class="lineno" valign="top"></td></tr>
337      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="left">5.2.1.3.  min-fresh</td><td> </td><td class="right">5.2.1.3.  min-fresh</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">   Argument syntax:</td><td> </td><td class="right">   Argument syntax:</td><td class="lineno" valign="top"></td></tr>
341      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
342      <tr><td class="lineno" valign="top"></td><td class="left">      delta-seconds (see Section 1.2.1)</td><td> </td><td class="right">      delta-seconds (see Section 1.2.1)</td><td class="lineno" valign="top"></td></tr>
343      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
344      <tr><td class="lineno" valign="top"></td><td class="left">   The "min-fresh" request directive indicates that the client is</td><td> </td><td class="right">   The "min-fresh" request directive indicates that the client is</td><td class="lineno" valign="top"></td></tr>
345      <tr><td class="lineno" valign="top"></td><td class="left">   willing to accept a response whose freshness lifetime is no less than</td><td> </td><td class="right">   willing to accept a response whose freshness lifetime is no less than</td><td class="lineno" valign="top"></td></tr>
346      <tr><td class="lineno" valign="top"></td><td class="left">   its current age plus the specified time in seconds.  That is, the</td><td> </td><td class="right">   its current age plus the specified time in seconds.  That is, the</td><td class="lineno" valign="top"></td></tr>
347      <tr><td class="lineno" valign="top"></td><td class="left">   client wants a response that will still be fresh for at least the</td><td> </td><td class="right">   client wants a response that will still be fresh for at least the</td><td class="lineno" valign="top"></td></tr>
348      <tr><td class="lineno" valign="top"></td><td class="left">   specified number of seconds.</td><td> </td><td class="right">   specified number of seconds.</td><td class="lineno" valign="top"></td></tr>
349      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
350      <tr><td><a name="diff0019" /></td></tr>
351      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note:</span> This directive uses the token form of the argument syntax;</td><td> </td><td class="rblock">   This directive uses the token form of the argument syntax; e.g.,</td><td class="lineno" valign="top"></td></tr>
352      <tr><td class="lineno" valign="top"></td><td class="lblock">   e.g., 'min-fresh=20', not 'min-fresh="20"'.  A sender SHOULD NOT</td><td> </td><td class="rblock">   'min-fresh=20', not 'min-fresh="20"'.  A sender SHOULD NOT generate</td><td class="lineno" valign="top"></td></tr>
353      <tr><td class="lineno" valign="top"></td><td class="lblock">   generate the quoted-string form.</td><td> </td><td class="rblock">   the quoted-string form.</td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
355      <tr><td class="lineno" valign="top"></td><td class="left">5.2.1.4.  no-cache</td><td> </td><td class="right">5.2.1.4.  no-cache</td><td class="lineno" valign="top"></td></tr>
356      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
357      <tr><td class="lineno" valign="top"></td><td class="left">   The "no-cache" request directive indicates that a cache MUST NOT use</td><td> </td><td class="right">   The "no-cache" request directive indicates that a cache MUST NOT use</td><td class="lineno" valign="top"></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="left">   a stored response to satisfy the request without successful</td><td> </td><td class="right">   a stored response to satisfy the request without successful</td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="left">   validation on the origin server.</td><td> </td><td class="right">   validation on the origin server.</td><td class="lineno" valign="top"></td></tr>
360      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
361      <tr><td class="lineno" valign="top"></td><td class="left">5.2.1.5.  no-store</td><td> </td><td class="right">5.2.1.5.  no-store</td><td class="lineno" valign="top"></td></tr>
362      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="left">   The "no-store" request directive indicates that a cache MUST NOT</td><td> </td><td class="right">   The "no-store" request directive indicates that a cache MUST NOT</td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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366      <tr><td class="lineno" valign="top"></td><td class="left">   subject to any other restrictions on caching.  However, any header</td><td> </td><td class="right">   subject to any other restrictions on caching.  However, any header</td><td class="lineno" valign="top"></td></tr>
367      <tr><td class="lineno" valign="top"></td><td class="left">   fields in the response that have the field-name(s) listed MUST NOT be</td><td> </td><td class="right">   fields in the response that have the field-name(s) listed MUST NOT be</td><td class="lineno" valign="top"></td></tr>
368      <tr><td class="lineno" valign="top"></td><td class="left">   sent in the response to a subsequent request without successful</td><td> </td><td class="right">   sent in the response to a subsequent request without successful</td><td class="lineno" valign="top"></td></tr>
369      <tr><td class="lineno" valign="top"></td><td class="left">   revalidation with the origin server.  This allows an origin server to</td><td> </td><td class="right">   revalidation with the origin server.  This allows an origin server to</td><td class="lineno" valign="top"></td></tr>
370      <tr><td class="lineno" valign="top"></td><td class="left">   prevent the re-use of certain header fields in a response, while</td><td> </td><td class="right">   prevent the re-use of certain header fields in a response, while</td><td class="lineno" valign="top"></td></tr>
371      <tr><td class="lineno" valign="top"></td><td class="left">   still allowing caching of the rest of the response.</td><td> </td><td class="right">   still allowing caching of the rest of the response.</td><td class="lineno" valign="top"></td></tr>
372      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
373      <tr><td class="lineno" valign="top"></td><td class="left">   The field-names given are not limited to the set of header fields</td><td> </td><td class="right">   The field-names given are not limited to the set of header fields</td><td class="lineno" valign="top"></td></tr>
374      <tr><td class="lineno" valign="top"></td><td class="left">   defined by this specification.  Field names are case-insensitive.</td><td> </td><td class="right">   defined by this specification.  Field names are case-insensitive.</td><td class="lineno" valign="top"></td></tr>
375      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
376      <tr><td><a name="diff0020" /></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">This directive uses the quoted-string form of the argument syntax.  A</span></td><td class="lineno" valign="top"></td></tr>
378      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   sender SHOULD NOT generate the token form (even if quoting appears</span></td><td class="lineno" valign="top"></td></tr>
379      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   not to be needed for single-entry lists).</span></td><td class="lineno" valign="top"></td></tr>
380      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
381      <tr><td class="lineno" valign="top"></td><td class="left">   Note: Although it has been back-ported to many implementations, some</td><td> </td><td class="right">   Note: Although it has been back-ported to many implementations, some</td><td class="lineno" valign="top"></td></tr>
382      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP/1.0 caches will not recognize or obey this directive.  Also, no-</td><td> </td><td class="right">   HTTP/1.0 caches will not recognize or obey this directive.  Also, no-</td><td class="lineno" valign="top"></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="left">   cache response directives with field-names are often handled by</td><td> </td><td class="right">   cache response directives with field-names are often handled by</td><td class="lineno" valign="top"></td></tr>
384      <tr><td class="lineno" valign="top"></td><td class="left">   caches as if an unqualified no-cache directive was received; i.e.,</td><td> </td><td class="right">   caches as if an unqualified no-cache directive was received; i.e.,</td><td class="lineno" valign="top"></td></tr>
385      <tr><td class="lineno" valign="top"></td><td class="left">   the special handling for the qualified form is not widely</td><td> </td><td class="right">   the special handling for the qualified form is not widely</td><td class="lineno" valign="top"></td></tr>
386      <tr><td class="lineno" valign="top"></td><td class="left">   implemented.</td><td> </td><td class="right">   implemented.</td><td class="lineno" valign="top"></td></tr>
387      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
388      <tr><td><a name="diff0021" /></td></tr>
389      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note: This directive uses the quoted-string form of the argument</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   syntax.  A sender SHOULD NOT generate the token form (even if quoting</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
391      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   appears not to be needed for single-entry lists).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
392      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
393      <tr><td class="lineno" valign="top"></td><td class="left">5.2.2.3.  no-store</td><td> </td><td class="right">5.2.2.3.  no-store</td><td class="lineno" valign="top"></td></tr>
394      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
395      <tr><td class="lineno" valign="top"></td><td class="left">   The "no-store" response directive indicates that a cache MUST NOT</td><td> </td><td class="right">   The "no-store" response directive indicates that a cache MUST NOT</td><td class="lineno" valign="top"></td></tr>
396      <tr><td class="lineno" valign="top"></td><td class="left">   store any part of either the immediate request or response.  This</td><td> </td><td class="right">   store any part of either the immediate request or response.  This</td><td class="lineno" valign="top"></td></tr>
397      <tr><td class="lineno" valign="top"></td><td class="left">   directive applies to both private and shared caches.  "MUST NOT</td><td> </td><td class="right">   directive applies to both private and shared caches.  "MUST NOT</td><td class="lineno" valign="top"></td></tr>
398      <tr><td class="lineno" valign="top"></td><td class="left">   store" in this context means that the cache MUST NOT intentionally</td><td> </td><td class="right">   store" in this context means that the cache MUST NOT intentionally</td><td class="lineno" valign="top"></td></tr>
399      <tr><td class="lineno" valign="top"></td><td class="left">   store the information in non-volatile storage, and MUST make a best-</td><td> </td><td class="right">   store the information in non-volatile storage, and MUST make a best-</td><td class="lineno" valign="top"></td></tr>
400      <tr><td class="lineno" valign="top"></td><td class="left">   effort attempt to remove the information from volatile storage as</td><td> </td><td class="right">   effort attempt to remove the information from volatile storage as</td><td class="lineno" valign="top"></td></tr>
401      <tr><td class="lineno" valign="top"></td><td class="left">   promptly as possible after forwarding it.</td><td> </td><td class="right">   promptly as possible after forwarding it.</td><td class="lineno" valign="top"></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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405      <tr><td class="lineno" valign="top"></td><td class="left">   payload, as defined in Section 5.7.2 of [Part1].</td><td> </td><td class="right">   payload, as defined in Section 5.7.2 of [Part1].</td><td class="lineno" valign="top"></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
407      <tr><td class="lineno" valign="top"></td><td class="left">5.2.2.5.  public</td><td> </td><td class="right">5.2.2.5.  public</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">   The "public" response directive indicates that any cache MAY store</td><td> </td><td class="right">   The "public" response directive indicates that any cache MAY store</td><td class="lineno" valign="top"></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="left">   the response, even if the response would normally be non-cacheable or</td><td> </td><td class="right">   the response, even if the response would normally be non-cacheable or</td><td class="lineno" valign="top"></td></tr>
411      <tr><td class="lineno" valign="top"></td><td class="left">   cacheable only within a private cache.  (See Section 3.2 for</td><td> </td><td class="right">   cacheable only within a private cache.  (See Section 3.2 for</td><td class="lineno" valign="top"></td></tr>
412      <tr><td class="lineno" valign="top"></td><td class="left">   additional details related to the use of public in response to a</td><td> </td><td class="right">   additional details related to the use of public in response to a</td><td class="lineno" valign="top"></td></tr>
413      <tr><td class="lineno" valign="top"></td><td class="left">   request containing Authorization, and Section 3 for details of how</td><td> </td><td class="right">   request containing Authorization, and Section 3 for details of how</td><td class="lineno" valign="top"></td></tr>
414      <tr><td class="lineno" valign="top"></td><td class="left">   public affects responses that would normally not be stored, due to</td><td> </td><td class="right">   public affects responses that would normally not be stored, due to</td><td class="lineno" valign="top"></td></tr>
415      <tr><td><a name="diff0022" /></td></tr>
416      <tr><td class="lineno" valign="top"></td><td class="lblock">   their status codes not being defined as <span class="delete">cacheable.)</span></td><td> </td><td class="rblock">   their status codes not being defined as <span class="insert">cacheable by default; see</span></td><td class="lineno" valign="top"></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Section 4.2.2.)</span></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">5.2.2.6.  private</td><td> </td><td class="right">5.2.2.6.  private</td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
421      <tr><td class="lineno" valign="top"></td><td class="left">   Argument syntax:</td><td> </td><td class="right">   Argument syntax:</td><td class="lineno" valign="top"></td></tr>
422      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="left">      #field-name</td><td> </td><td class="right">      #field-name</td><td class="lineno" valign="top"></td></tr>
424      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="left">   The "private" response directive indicates that the response message</td><td> </td><td class="right">   The "private" response directive indicates that the response message</td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno" valign="top"></td><td class="left">   is intended for a single user and MUST NOT be stored by a shared</td><td> </td><td class="right">   is intended for a single user and MUST NOT be stored by a shared</td><td class="lineno" valign="top"></td></tr>
427      <tr><td class="lineno" valign="top"></td><td class="left">   cache.  A private cache MAY store the response and reuse it for later</td><td> </td><td class="right">   cache.  A private cache MAY store the response and reuse it for later</td><td class="lineno" valign="top"></td></tr>
428      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
429      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 25, line 35</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 25, line 43</em></th><td></td></tr>
430      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
431      <tr><td class="lineno" valign="top"></td><td class="left">   If the private response directive specifies one or more field-names,</td><td> </td><td class="right">   If the private response directive specifies one or more field-names,</td><td class="lineno" valign="top"></td></tr>
432      <tr><td class="lineno" valign="top"></td><td class="left">   this requirement is limited to the field-values associated with the</td><td> </td><td class="right">   this requirement is limited to the field-values associated with the</td><td class="lineno" valign="top"></td></tr>
433      <tr><td class="lineno" valign="top"></td><td class="left">   listed response header fields.  That is, a shared cache MUST NOT</td><td> </td><td class="right">   listed response header fields.  That is, a shared cache MUST NOT</td><td class="lineno" valign="top"></td></tr>
434      <tr><td class="lineno" valign="top"></td><td class="left">   store the specified field-names(s), whereas it MAY store the</td><td> </td><td class="right">   store the specified field-names(s), whereas it MAY store the</td><td class="lineno" valign="top"></td></tr>
435      <tr><td class="lineno" valign="top"></td><td class="left">   remainder of the response message.</td><td> </td><td class="right">   remainder of the response message.</td><td class="lineno" valign="top"></td></tr>
436      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
437      <tr><td class="lineno" valign="top"></td><td class="left">   The field-names given are not limited to the set of header fields</td><td> </td><td class="right">   The field-names given are not limited to the set of header fields</td><td class="lineno" valign="top"></td></tr>
438      <tr><td class="lineno" valign="top"></td><td class="left">   defined by this specification.  Field names are case-insensitive.</td><td> </td><td class="right">   defined by this specification.  Field names are case-insensitive.</td><td class="lineno" valign="top"></td></tr>
439      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
440      <tr><td><a name="diff0023" /></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">This directive uses the quoted-string form of the argument syntax.  A</span></td><td class="lineno" valign="top"></td></tr>
442      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   sender SHOULD NOT generate the token form (even if quoting appears</span></td><td class="lineno" valign="top"></td></tr>
443      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   not to be needed for single-entry lists).</span></td><td class="lineno" valign="top"></td></tr>
444      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
445      <tr><td class="lineno" valign="top"></td><td class="left">   Note: This usage of the word "private" only controls where the</td><td> </td><td class="right">   Note: This usage of the word "private" only controls where the</td><td class="lineno" valign="top"></td></tr>
446      <tr><td class="lineno" valign="top"></td><td class="left">   response can be stored; it cannot ensure the privacy of the message</td><td> </td><td class="right">   response can be stored; it cannot ensure the privacy of the message</td><td class="lineno" valign="top"></td></tr>
447      <tr><td class="lineno" valign="top"></td><td class="left">   content.  Also, private response directives with field-names are</td><td> </td><td class="right">   content.  Also, private response directives with field-names are</td><td class="lineno" valign="top"></td></tr>
448      <tr><td class="lineno" valign="top"></td><td class="left">   often handled by caches as if an unqualified private directive was</td><td> </td><td class="right">   often handled by caches as if an unqualified private directive was</td><td class="lineno" valign="top"></td></tr>
449      <tr><td class="lineno" valign="top"></td><td class="left">   received; i.e., the special handling for the qualified form is not</td><td> </td><td class="right">   received; i.e., the special handling for the qualified form is not</td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="left">   widely implemented.</td><td> </td><td class="right">   widely implemented.</td><td class="lineno" valign="top"></td></tr>
451      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
452      <tr><td><a name="diff0024" /></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note: This directive uses the quoted-string form of the argument</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
454      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   syntax.  A sender SHOULD NOT generate the token form (even if quoting</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   appears not to be needed for single-entry lists).</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
457      <tr><td class="lineno" valign="top"></td><td class="left">5.2.2.7.  proxy-revalidate</td><td> </td><td class="right">5.2.2.7.  proxy-revalidate</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 class="lineno" valign="top"></td><td class="left">   The "proxy-revalidate" response directive has the same meaning as the</td><td> </td><td class="right">   The "proxy-revalidate" response directive has the same meaning as the</td><td class="lineno" valign="top"></td></tr>
460      <tr><td class="lineno" valign="top"></td><td class="left">   must-revalidate response directive, except that it does not apply to</td><td> </td><td class="right">   must-revalidate response directive, except that it does not apply to</td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno" valign="top"></td><td class="left">   private caches.</td><td> </td><td class="right">   private caches.</td><td class="lineno" valign="top"></td></tr>
462      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="left">5.2.2.8.  max-age</td><td> </td><td class="right">5.2.2.8.  max-age</td><td class="lineno" valign="top"></td></tr>
464      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
465      <tr><td class="lineno" valign="top"></td><td class="left">   Argument syntax:</td><td> </td><td class="right">   Argument syntax:</td><td class="lineno" valign="top"></td></tr>
466      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
467      <tr><td class="lineno" valign="top"></td><td class="left">      delta-seconds (see Section 1.2.1)</td><td> </td><td class="right">      delta-seconds (see Section 1.2.1)</td><td class="lineno" valign="top"></td></tr>
468      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
469      <tr><td class="lineno" valign="top"></td><td class="left">   The "max-age" response directive indicates that the response is to be</td><td> </td><td class="right">   The "max-age" response directive indicates that the response is to be</td><td class="lineno" valign="top"></td></tr>
470      <tr><td class="lineno" valign="top"></td><td class="left">   considered stale after its age is greater than the specified number</td><td> </td><td class="right">   considered stale after its age is greater than the specified number</td><td class="lineno" valign="top"></td></tr>
471      <tr><td class="lineno" valign="top"></td><td class="left">   of seconds.</td><td> </td><td class="right">   of seconds.</td><td class="lineno" valign="top"></td></tr>
472      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
473      <tr><td><a name="diff0025" /></td></tr>
474      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note:</span> This directive uses the token form of the argument syntax;</td><td> </td><td class="rblock">   This directive uses the token form of the argument syntax; e.g.,</td><td class="lineno" valign="top"></td></tr>
475      <tr><td class="lineno" valign="top"></td><td class="lblock">   e.g., 'max-age=5', not 'max-age="5"'.  A sender SHOULD NOT generate</td><td> </td><td class="rblock">   'max-age=5', not 'max-age="5"'.  A sender SHOULD NOT generate the</td><td class="lineno" valign="top"></td></tr>
476      <tr><td class="lineno" valign="top"></td><td class="lblock">   the quoted-string form.</td><td> </td><td class="rblock">   quoted-string form.</td><td class="lineno" valign="top"></td></tr>
477      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
478      <tr><td class="lineno" valign="top"></td><td class="left">5.2.2.9.  s-maxage</td><td> </td><td class="right">5.2.2.9.  s-maxage</td><td class="lineno" valign="top"></td></tr>
479      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
480      <tr><td class="lineno" valign="top"></td><td class="left">   Argument syntax:</td><td> </td><td class="right">   Argument syntax:</td><td class="lineno" valign="top"></td></tr>
481      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
482      <tr><td class="lineno" valign="top"></td><td class="left">      delta-seconds (see Section 1.2.1)</td><td> </td><td class="right">      delta-seconds (see Section 1.2.1)</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">   The "s-maxage" response directive indicates that, in shared caches,</td><td> </td><td class="right">   The "s-maxage" response directive indicates that, in shared caches,</td><td class="lineno" valign="top"></td></tr>
485      <tr><td class="lineno" valign="top"></td><td class="left">   the maximum age specified by this directive overrides the maximum age</td><td> </td><td class="right">   the maximum age specified by this directive overrides the maximum age</td><td class="lineno" valign="top"></td></tr>
486      <tr><td class="lineno" valign="top"></td><td class="left">   specified by either the max-age directive or the Expires header</td><td> </td><td class="right">   specified by either the max-age directive or the Expires header</td><td class="lineno" valign="top"></td></tr>
487      <tr><td class="lineno" valign="top"></td><td class="left">   field.  The s-maxage directive also implies the semantics of the</td><td> </td><td class="right">   field.  The s-maxage directive also implies the semantics of the</td><td class="lineno" valign="top"></td></tr>
488      <tr><td class="lineno" valign="top"></td><td class="left">   proxy-revalidate response directive.</td><td> </td><td class="right">   proxy-revalidate response directive.</td><td class="lineno" valign="top"></td></tr>
489      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
490      <tr><td><a name="diff0026" /></td></tr>
491      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Note:</span> This directive uses the token form of the argument syntax;</td><td> </td><td class="rblock">   This directive uses the token form of the argument syntax; e.g.,</td><td class="lineno" valign="top"></td></tr>
492      <tr><td class="lineno" valign="top"></td><td class="lblock">   e.g., 's-maxage=10', not 's-maxage="10"'.  A sender SHOULD NOT</td><td> </td><td class="rblock">   's-maxage=10', not 's-maxage="10"'.  A sender SHOULD NOT generate the</td><td class="lineno" valign="top"></td></tr>
493      <tr><td class="lineno" valign="top"></td><td class="lblock">   generate the quoted-string form.</td><td> </td><td class="rblock">   quoted-string form.</td><td class="lineno" valign="top"></td></tr>
494      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
495      <tr><td class="lineno" valign="top"></td><td class="left">5.2.3.  Cache Control Extensions</td><td> </td><td class="right">5.2.3.  Cache Control Extensions</td><td class="lineno" valign="top"></td></tr>
496      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
497      <tr><td class="lineno" valign="top"></td><td class="left">   The Cache-Control header field can be extended through the use of one</td><td> </td><td class="right">   The Cache-Control header field can be extended through the use of one</td><td class="lineno" valign="top"></td></tr>
498      <tr><td class="lineno" valign="top"></td><td class="left">   or more cache-extension tokens, each with an optional value.</td><td> </td><td class="right">   or more cache-extension tokens, each with an optional value.</td><td class="lineno" valign="top"></td></tr>
499      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
500      <tr><td class="lineno" valign="top"></td><td class="left">   Informational extensions (those that do not require a change in cache</td><td> </td><td class="right">   Informational extensions (those that do not require a change in cache</td><td class="lineno" valign="top"></td></tr>
501      <tr><td class="lineno" valign="top"></td><td class="left">   behavior) can be added without changing the semantics of other</td><td> </td><td class="right">   behavior) can be added without changing the semantics of other</td><td class="lineno" valign="top"></td></tr>
502      <tr><td class="lineno" valign="top"></td><td class="left">   directives.  Behavioral extensions are designed to work by acting as</td><td> </td><td class="right">   directives.  Behavioral extensions are designed to work by acting as</td><td class="lineno" valign="top"></td></tr>
503      <tr><td class="lineno" valign="top"></td><td class="left">   modifiers to the existing base of cache directives.</td><td> </td><td class="right">   modifiers to the existing base of cache directives.</td><td class="lineno" valign="top"></td></tr>
504      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
505      <tr bgcolor="gray" ><td></td><th><a name="part-l11" /><small>skipping to change at</small><em> page 32, line 12</em></th><th> </th><th><a name="part-r11" /><small>skipping to change at</small><em> page 32, line 18</em></th><td></td></tr>
506      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
507      <tr><td class="lineno" valign="top"></td><td class="left">   This does not prohibit the history mechanism from telling the user</td><td> </td><td class="right">   This does not prohibit the history mechanism from telling the user</td><td class="lineno" valign="top"></td></tr>
508      <tr><td class="lineno" valign="top"></td><td class="left">   that a view might be stale, or from honoring cache directives (e.g.,</td><td> </td><td class="right">   that a view might be stale, or from honoring cache directives (e.g.,</td><td class="lineno" valign="top"></td></tr>
509      <tr><td class="lineno" valign="top"></td><td class="left">   Cache-Control: no-store).</td><td> </td><td class="right">   Cache-Control: no-store).</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 class="lineno" valign="top"></td><td class="left">7.  IANA Considerations</td><td> </td><td class="right">7.  IANA Considerations</td><td class="lineno" valign="top"></td></tr>
512      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
513      <tr><td class="lineno" valign="top"></td><td class="left">7.1.  Cache Directive Registry</td><td> </td><td class="right">7.1.  Cache Directive Registry</td><td class="lineno" valign="top"></td></tr>
514      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
515      <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>
516      <tr><td><a name="diff0027" /></td></tr>
517      <tr><td class="lineno" valign="top"></td><td class="lblock">   cache directives.  It will be created and maintained at</td><td> </td><td class="rblock">   cache directives.  It will be created and maintained at <span class="insert">(the</span></td><td class="lineno" valign="top"></td></tr>
518      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   suggested URI)</span></td><td class="lineno" valign="top"></td></tr>
519      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://www.iana.org/assignments/http-cache-directives&gt;.</td><td> </td><td class="right">   &lt;http://www.iana.org/assignments/http-cache-directives&gt;.</td><td class="lineno" valign="top"></td></tr>
520      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
521      <tr><td class="lineno" valign="top"></td><td class="left">7.1.1.  Procedure</td><td> </td><td class="right">7.1.1.  Procedure</td><td class="lineno" valign="top"></td></tr>
522      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
523      <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>
524      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
525      <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>
526      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
527      <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>
528      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
529      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
530      <tr bgcolor="gray" ><td></td><th><a name="part-l12" /><small>skipping to change at</small><em> page 33, line 27</em></th><th> </th><th><a name="part-r12" /><small>skipping to change at</small><em> page 33, line 32</em></th><td></td></tr>
531      <tr><td class="lineno" valign="top"></td><td class="left">   | proxy-revalidate       | Section 5.2.2.7                  |</td><td> </td><td class="right">   | proxy-revalidate       | Section 5.2.2.7                  |</td><td class="lineno" valign="top"></td></tr>
532      <tr><td class="lineno" valign="top"></td><td class="left">   | public                 | Section 5.2.2.5                  |</td><td> </td><td class="right">   | public                 | Section 5.2.2.5                  |</td><td class="lineno" valign="top"></td></tr>
533      <tr><td class="lineno" valign="top"></td><td class="left">   | s-maxage               | Section 5.2.2.9                  |</td><td> </td><td class="right">   | s-maxage               | Section 5.2.2.9                  |</td><td class="lineno" valign="top"></td></tr>
534      <tr><td class="lineno" valign="top"></td><td class="left">   | stale-if-error         | [RFC5861], Section 4             |</td><td> </td><td class="right">   | stale-if-error         | [RFC5861], Section 4             |</td><td class="lineno" valign="top"></td></tr>
535      <tr><td class="lineno" valign="top"></td><td class="left">   | stale-while-revalidate | [RFC5861], Section 3             |</td><td> </td><td class="right">   | stale-while-revalidate | [RFC5861], Section 3             |</td><td class="lineno" valign="top"></td></tr>
536      <tr><td class="lineno" valign="top"></td><td class="left">   +------------------------+----------------------------------+</td><td> </td><td class="right">   +------------------------+----------------------------------+</td><td class="lineno" valign="top"></td></tr>
537      <tr><td class="lineno" valign="top"></td><td class="left"></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">7.2.  Warn Code Registry</td><td> </td><td class="right">7.2.  Warn Code Registry</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 class="lineno" valign="top"></td><td class="left">   The HTTP Warn Code Registry defines the name space for warn codes.</td><td> </td><td class="right">   The HTTP Warn Code Registry defines the name space for warn codes.</td><td class="lineno" valign="top"></td></tr>
541      <tr><td><a name="diff0028" /></td></tr>
542      <tr><td class="lineno" valign="top"></td><td class="lblock">   It will be created and maintained at</td><td> </td><td class="rblock">   It will be created and maintained at<span class="insert"> (the suggested URI)</span></td><td class="lineno" valign="top"></td></tr>
543      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://www.iana.org/assignments/http-warn-codes&gt;.</td><td> </td><td class="right">   &lt;http://www.iana.org/assignments/http-warn-codes&gt;.</td><td class="lineno" valign="top"></td></tr>
544      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
545      <tr><td class="lineno" valign="top"></td><td class="left">7.2.1.  Procedure</td><td> </td><td class="right">7.2.1.  Procedure</td><td class="lineno" valign="top"></td></tr>
546      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
547      <tr><td class="lineno" valign="top"></td><td class="left">   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>
548      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
549      <tr><td class="lineno" valign="top"></td><td class="left">   o  Warn Code (3 digits)</td><td> </td><td class="right">   o  Warn Code (3 digits)</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">   o  Short Description</td><td> </td><td class="right">   o  Short Description</td><td class="lineno" valign="top"></td></tr>
552      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
553      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
554      <tr bgcolor="gray" ><td></td><th><a name="part-l13" /><small>skipping to change at</small><em> page 35, line 38</em></th><th> </th><th><a name="part-r13" /><small>skipping to change at</small><em> page 35, line 38</em></th><td></td></tr>
555      <tr><td class="lineno" valign="top"></td><td class="left">9.  Acknowledgments</td><td> </td><td class="right">9.  Acknowledgments</td><td class="lineno" valign="top"></td></tr>
556      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
557      <tr><td class="lineno" valign="top"></td><td class="left">   See Section 10 of [Part1].</td><td> </td><td class="right">   See Section 10 of [Part1].</td><td class="lineno" valign="top"></td></tr>
558      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
559      <tr><td class="lineno" valign="top"></td><td class="left">10.  References</td><td> </td><td class="right">10.  References</td><td class="lineno" valign="top"></td></tr>
560      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
561      <tr><td class="lineno" valign="top"></td><td class="left">10.1.  Normative References</td><td> </td><td class="right">10.1.  Normative References</td><td class="lineno" valign="top"></td></tr>
562      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
563      <tr><td class="lineno" valign="top"></td><td class="left">   [Part1]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td> </td><td class="right">   [Part1]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td class="lineno" valign="top"></td></tr>
564      <tr><td class="lineno" valign="top"></td><td class="left">              Protocol (HTTP/1.1): Message Syntax and Routing",</td><td> </td><td class="right">              Protocol (HTTP/1.1): Message Syntax and Routing",</td><td class="lineno" valign="top"></td></tr>
565      <tr><td><a name="diff0029" /></td></tr>
566      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p1-messaging-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p1-messaging-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
567      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
568      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
569      <tr><td class="lineno" valign="top"></td><td class="left">   [Part2]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td> </td><td class="right">   [Part2]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td class="lineno" valign="top"></td></tr>
570      <tr><td class="lineno" valign="top"></td><td class="left">              Protocol (HTTP/1.1): Semantics and Content",</td><td> </td><td class="right">              Protocol (HTTP/1.1): Semantics and Content",</td><td class="lineno" valign="top"></td></tr>
571      <tr><td><a name="diff0030" /></td></tr>
572      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p2-semantics-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p2-semantics-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
573      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
574      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
575      <tr><td class="lineno" valign="top"></td><td class="left">   [Part4]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td> </td><td class="right">   [Part4]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td class="lineno" valign="top"></td></tr>
576      <tr><td class="lineno" valign="top"></td><td class="left">              Protocol (HTTP/1.1): Conditional Requests",</td><td> </td><td class="right">              Protocol (HTTP/1.1): Conditional Requests",</td><td class="lineno" valign="top"></td></tr>
577      <tr><td><a name="diff0031" /></td></tr>
578      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p4-conditional-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p4-conditional-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
579      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
580      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
581      <tr><td class="lineno" valign="top"></td><td class="left">   [Part5]    Fielding, R., Ed., Lafon, Y., Ed., and J. Reschke, Ed.,</td><td> </td><td class="right">   [Part5]    Fielding, R., Ed., Lafon, Y., Ed., and J. Reschke, Ed.,</td><td class="lineno" valign="top"></td></tr>
582      <tr><td class="lineno" valign="top"></td><td class="left">              "Hypertext Transfer Protocol (HTTP/1.1): Range Requests",</td><td> </td><td class="right">              "Hypertext Transfer Protocol (HTTP/1.1): Range Requests",</td><td class="lineno" valign="top"></td></tr>
583      <tr><td><a name="diff0032" /></td></tr>
584      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p5-range-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p5-range-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
585      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
586      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
587      <tr><td class="lineno" valign="top"></td><td class="left">   [Part7]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td> </td><td class="right">   [Part7]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td class="lineno" valign="top"></td></tr>
588      <tr><td class="lineno" valign="top"></td><td class="left">              Protocol (HTTP/1.1): Authentication",</td><td> </td><td class="right">              Protocol (HTTP/1.1): Authentication",</td><td class="lineno" valign="top"></td></tr>
589      <tr><td><a name="diff0033" /></td></tr>
590      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p7-auth-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p7-auth-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
591      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
592      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
593      <tr><td 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>
594      <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>
595      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
596      <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>
597      <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>
598      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
599      <tr><td class="lineno" valign="top"></td><td class="left">10.2.  Informative References</td><td> </td><td class="right">10.2.  Informative References</td><td class="lineno" valign="top"></td></tr>
600      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
601      <tr><td class="lineno" valign="top"></td><td class="left">   [BCP90]    Klyne, G., Nottingham, M., and J. Mogul, "Registration</td><td> </td><td class="right">   [BCP90]    Klyne, G., Nottingham, M., and J. Mogul, "Registration</td><td class="lineno" valign="top"></td></tr>
602      <tr><td class="lineno" valign="top"></td><td class="left">              Procedures for Message Header Fields", BCP 90, RFC 3864,</td><td> </td><td class="right">              Procedures for Message Header Fields", BCP 90, RFC 3864,</td><td class="lineno" valign="top"></td></tr>
603      <tr><td class="lineno" valign="top"></td><td class="left">              September 2004.</td><td> </td><td class="right">              September 2004.</td><td class="lineno" valign="top"></td></tr>
604      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
605      <tr><td><a name="diff0034" /></td></tr>
606      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">[RFC1305]  Mills, D., "Network Time Protocol (Version 3)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
607      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">              Specification, Implementation", RFC 1305, March 1992.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
608      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
609      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
610      <tr><td class="lineno" valign="top"></td><td class="left">              Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext</td><td> </td><td class="right">              Masinter, L., Leach, P., and T. Berners-Lee, "Hypertext</td><td class="lineno" valign="top"></td></tr>
611      <tr><td class="lineno" valign="top"></td><td class="left">              Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.</td><td> </td><td class="right">              Transfer Protocol -- HTTP/1.1", RFC 2616, June 1999.</td><td class="lineno" valign="top"></td></tr>
612      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
613      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an</td><td> </td><td class="right">   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an</td><td class="lineno" valign="top"></td></tr>
614      <tr><td class="lineno" valign="top"></td><td class="left">              IANA Considerations Section in RFCs", BCP 26, RFC 5226,</td><td> </td><td class="right">              IANA Considerations Section in RFCs", BCP 26, RFC 5226,</td><td class="lineno" valign="top"></td></tr>
615      <tr><td class="lineno" valign="top"></td><td class="left">              May 2008.</td><td> </td><td class="right">              May 2008.</td><td class="lineno" valign="top"></td></tr>
616      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
617      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC5861]  Nottingham, M., "HTTP Cache-Control Extensions for Stale</td><td> </td><td class="right">   [RFC5861]  Nottingham, M., "HTTP Cache-Control Extensions for Stale</td><td class="lineno" valign="top"></td></tr>
618      <tr><td class="lineno" valign="top"></td><td class="left">              Content", RFC 5861, April 2010.</td><td> </td><td class="right">              Content", RFC 5861, April 2010.</td><td class="lineno" valign="top"></td></tr>
619      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
620      <tr><td><a name="diff0035" /></td></tr>
621      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">[RFC5905]  Mills, D., Martin, J., Ed., Burbank, J., and W. Kasch,</span></td><td class="lineno" valign="top"></td></tr>
622      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">              "Network Time Protocol Version 4: Protocol and Algorithms</span></td><td class="lineno" valign="top"></td></tr>
623      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">              Specification", RFC 5905, June 2010.</span></td><td class="lineno" valign="top"></td></tr>
624      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
625      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC6265]  Barth, A., "HTTP State Management Mechanism", RFC 6265,</td><td> </td><td class="right">   [RFC6265]  Barth, A., "HTTP State Management Mechanism", RFC 6265,</td><td class="lineno" valign="top"></td></tr>
626      <tr><td class="lineno" valign="top"></td><td class="left">              April 2011.</td><td> </td><td class="right">              April 2011.</td><td class="lineno" valign="top"></td></tr>
627      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
628      <tr><td class="lineno" valign="top"></td><td class="left">Appendix A.  Changes from RFC 2616</td><td> </td><td class="right">Appendix A.  Changes from RFC 2616</td><td class="lineno" valign="top"></td></tr>
629      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
630      <tr><td class="lineno" valign="top"></td><td class="left">   The specification has been substantially rewritten for clarity.</td><td> </td><td class="right">   The specification has been substantially rewritten for clarity.</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">   The conditions under which an authenticated response can be cached</td><td> </td><td class="right">   The conditions under which an authenticated response can be cached</td><td class="lineno" valign="top"></td></tr>
633      <tr><td class="lineno" valign="top"></td><td class="left">   have been clarified.  (Section 3.2)</td><td> </td><td class="right">   have been clarified.  (Section 3.2)</td><td class="lineno" valign="top"></td></tr>
634      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
635      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
636      <tr bgcolor="gray" ><td></td><th><a name="part-l14" /><small>skipping to change at</small><em> page 39, line 49</em></th><th> </th><th><a name="part-r14" /><small>skipping to change at</small><em> page 39, line 49</em></th><td></td></tr>
637      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
638      <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>
639      <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>
640      <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>
641      <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>
642      <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>
643      <tr><td class="lineno" valign="top"></td><td class="left">    ]</td><td> </td><td class="right">    ]</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">Appendix D.  Change Log (to be removed by RFC Editor before publication)</td><td> </td><td class="right">Appendix D.  Change Log (to be removed by RFC Editor before publication)</td><td class="lineno" valign="top"></td></tr>
646      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
647      <tr><td><a name="diff0036" /></td></tr>
648      <tr><td class="lineno" valign="top"></td><td class="lblock">   Changes up to the <span class="delete">first Working Group</span> Last Call draft are summarized</td><td> </td><td class="rblock">   Changes up to the <span class="insert">IETF</span> Last Call draft are summarized in <span class="insert">&lt;http://</span></td><td class="lineno" valign="top"></td></tr>
649      <tr><td class="lineno" valign="top"></td><td class="lblock">   in <span class="delete">&lt;http://trac.tools.ietf.org/html/</span></td><td> </td><td class="rblock"><span class="insert">   trac.tools.ietf.org/html/draft-ietf-httpbis-p6-cache-24#appendix-D&gt;.</span></td><td class="lineno" valign="top"></td></tr>
650      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   draft-ietf-httpbis-p6-cache-19#appendix-C&gt;.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
651      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
652      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.1.  Since draft-ietf-httpbis-p6-cache-19</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
653      <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>
654      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
655      <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>
656      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/307&gt;: "untangle</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
657      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Cache-Control ABNF"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
658      <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>
659      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/353&gt;: "Multiple</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
660      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      values in Cache-Control header fields"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
661      <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>
662      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/355&gt;: "Case</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
663      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      sensitivity of header fields in CC values"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
664      <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>
665      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/356&gt;: "Spurious</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
666      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      'MAYs'"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
667      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
668      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/360&gt;: "enhance</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
669      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      considerations for new cache control directives"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
670      <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>
671      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/361&gt;: "ABNF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
672      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      requirements for recipients"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
673      <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>
674      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/368&gt;: "note</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
675      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      introduction of new IANA registries as normative changes"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
676      <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>
677      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/373&gt;: "broken prose</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
678      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      in description of 'Vary'"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
679      <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>
680      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.2.  Since draft-ietf-httpbis-p6-cache-20</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
681      <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>
682      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
683      <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>
684      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/375&gt;: "'Most</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
685      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Conservative'"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
686      <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>
687      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Other changes:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
688      <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>
689      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  Conformance criteria and considerations regarding error handling</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
690      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      are now defined in Part 1.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
691      <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>
692      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  Move definition of "Vary" header field into Part 2.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
693      <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>
694      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  Add security considerations with respect to cache poisoning and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
695      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      the "Set-Cookie" header field.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
696      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
697      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.3.  Since draft-ietf-httpbis-p6-cache-21</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
698      <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>
699      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
700      <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>
701      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &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>
702      <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>
703      <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>
704      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/406&gt;: "304 without</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
705      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      validator"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
706      <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>
707      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/418&gt;: "No-Transform"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
708      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
709      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/430&gt;: "Revert prior</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
710      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      change to the meaning of the public cache response directive.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
711      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
712      <tr><td><a name="diff0037" /></td></tr>
713      <tr><td class="lineno" valign="top"></td><td class="lblock">D.<span class="delete">4.  Since draft-ietf-httpbis-p6-cache-22</span></td><td> </td><td class="rblock">D.<span class="insert">1.  Since draft-ietf-httpbis-p6-cache-24</span></td><td class="lineno" valign="top"></td></tr>
714      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
715      <tr><td class="lineno" valign="top"></td><td class="left">   Closed issues:</td><td> </td><td class="right">   Closed issues:</td><td class="lineno" valign="top"></td></tr>
716      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
717      <tr><td><a name="diff0038" /></td></tr>
718      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  <span class="delete">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/436&gt;: "explain list</span></td><td> </td><td class="rblock">   o  <span class="insert">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/499&gt;: "RFC 1305 ref</span></td><td class="lineno" valign="top"></td></tr>
719      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      expansion in ABNF appendices"</span></td><td> </td><td class="rblock"><span class="insert">      needs to be updated to 5905"</span></td><td class="lineno" valign="top"></td></tr>
720      <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>
721      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/453&gt;: "Returning the</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"><span class="delete">      freshest response"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
723      <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>
724      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/464&gt;: "placement of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
725      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      extension point considerations"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
726      <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>
727      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/469&gt;: "Editorial</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
728      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      notes for p6"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
729      <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>
730      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/471&gt;: "Vary and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
731      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      future requests"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
732      <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>
733      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.5.  Since draft-ietf-httpbis-p6-cache-23</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
734      <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>
735      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
736      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
737      <tr><td><a name="diff0039" /></td></tr>
738      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  <span class="delete">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/486&gt;: "Requiring</span></td><td> </td><td class="rblock">   o  <span class="insert">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/500&gt;: "dangling</span></td><td class="lineno" valign="top"></td></tr>
739      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      proxies</span> to <span class="delete">process warn-date"</span></td><td> </td><td class="rblock"><span class="insert">      reference</span> to <span class="insert">cacheable status codes"</span></td><td class="lineno" valign="top"></td></tr>
740      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
741      <tr><td><a name="diff0040" /></td></tr>
742      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  <span class="delete">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/496&gt;: "add Warning</span></td><td> </td><td class="rblock">   o  <span class="insert">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/512&gt;: "APPSDIR</span></td><td class="lineno" valign="top"></td></tr>
743      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      header field examples"</span></td><td> </td><td class="rblock"><span class="insert">      review of draft-ietf-httpbis-p6-cache-24"</span></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 class="lineno" valign="top"></td><td class="left">Index</td><td> </td><td class="right">Index</td><td class="lineno" valign="top"></td></tr>
746      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
747      <tr><td class="lineno" valign="top"></td><td class="left">   1</td><td> </td><td class="right">   1</td><td class="lineno" valign="top"></td></tr>
748      <tr><td><a name="diff0041" /></td></tr>
749      <tr><td class="lineno" valign="top"></td><td class="lblock">      110 (warn-code)  3<span class="delete">0</span></td><td> </td><td class="rblock">      110 (warn-code)  3<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
750      <tr><td class="lineno" valign="top"></td><td class="left">      111 (warn-code)  31</td><td> </td><td class="right">      111 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
751      <tr><td class="lineno" valign="top"></td><td class="left">      112 (warn-code)  31</td><td> </td><td class="right">      112 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
752      <tr><td class="lineno" valign="top"></td><td class="left">      113 (warn-code)  31</td><td> </td><td class="right">      113 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
753      <tr><td class="lineno" valign="top"></td><td class="left">      199 (warn-code)  31</td><td> </td><td class="right">      199 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
754      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
755      <tr><td class="lineno" valign="top"></td><td class="left">   2</td><td> </td><td class="right">   2</td><td class="lineno" valign="top"></td></tr>
756      <tr><td class="lineno" valign="top"></td><td class="left">      214 (warn-code)  31</td><td> </td><td class="right">      214 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
757      <tr><td class="lineno" valign="top"></td><td class="left">      299 (warn-code)  31</td><td> </td><td class="right">      299 (warn-code)  31</td><td class="lineno" valign="top"></td></tr>
758      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
759      <tr><td class="lineno" valign="top"></td><td class="left">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
760      <tr><td class="lineno" valign="top"></td><td class="left">      age  10</td><td> </td><td class="right">      age  10</td><td class="lineno" valign="top"></td></tr>
761      <tr><td class="lineno" valign="top"></td><td class="left">      Age header field  20</td><td> </td><td class="right">      Age header field  20</td><td class="lineno" valign="top"></td></tr>
762      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
763      <tr><td class="lineno" valign="top"></td><td class="left">   C</td><td> </td><td class="right">   C</td><td class="lineno" valign="top"></td></tr>
764      <tr><td class="lineno" valign="top"></td><td class="left">      cache  4</td><td> </td><td class="right">      cache  4</td><td class="lineno" valign="top"></td></tr>
765      <tr><td class="lineno" valign="top"></td><td class="left">      cache entry  5</td><td> </td><td class="right">      cache entry  5</td><td class="lineno" valign="top"></td></tr>
766      <tr><td class="lineno" valign="top"></td><td class="left">      cache key  5</td><td> </td><td class="right">      cache key  5</td><td class="lineno" valign="top"></td></tr>
767      <tr><td><a name="diff0042" /></td></tr>
768      <tr><td class="lineno" valign="top"></td><td class="lblock">      Cache-Control header field  2<span class="delete">0</span></td><td> </td><td class="rblock">      Cache-Control header field  2<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
769      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
770      <tr><td class="lineno" valign="top"></td><td class="left">   D</td><td> </td><td class="right">   D</td><td class="lineno" valign="top"></td></tr>
771      <tr><td class="lineno" valign="top"></td><td class="left">      Disconnected Operation (warn-text)  31</td><td> </td><td class="right">      Disconnected Operation (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
772      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
773      <tr><td class="lineno" valign="top"></td><td class="left">   E</td><td> </td><td class="right">   E</td><td class="lineno" valign="top"></td></tr>
774      <tr><td class="lineno" valign="top"></td><td class="left">      Expires header field  27</td><td> </td><td class="right">      Expires header field  27</td><td class="lineno" valign="top"></td></tr>
775      <tr><td class="lineno" valign="top"></td><td class="left">      explicit expiration time  10</td><td> </td><td class="right">      explicit expiration time  10</td><td class="lineno" valign="top"></td></tr>
776      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
777      <tr><td class="lineno" valign="top"></td><td class="left">   F</td><td> </td><td class="right">   F</td><td class="lineno" valign="top"></td></tr>
778      <tr><td class="lineno" valign="top"></td><td class="left">      fresh  10</td><td> </td><td class="right">      fresh  10</td><td class="lineno" valign="top"></td></tr>
779      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
780      <tr bgcolor="gray" ><td></td><th><a name="part-l15" /><small>skipping to change at</small><em> page 43, line 9</em></th><th> </th><th><a name="part-r15" /><small>skipping to change at</small><em> page 41, line 26</em></th><td></td></tr>
781      <tr><td class="lineno" valign="top"></td><td class="left">         warn-text  29</td><td> </td><td class="right">         warn-text  29</td><td class="lineno" valign="top"></td></tr>
782      <tr><td class="lineno" valign="top"></td><td class="left">         Warning  29</td><td> </td><td class="right">         Warning  29</td><td class="lineno" valign="top"></td></tr>
783      <tr><td class="lineno" valign="top"></td><td class="left">         warning-value  29</td><td> </td><td class="right">         warning-value  29</td><td class="lineno" valign="top"></td></tr>
784      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
785      <tr><td class="lineno" valign="top"></td><td class="left">   H</td><td> </td><td class="right">   H</td><td class="lineno" valign="top"></td></tr>
786      <tr><td class="lineno" valign="top"></td><td class="left">      Heuristic Expiration (warn-text)  31</td><td> </td><td class="right">      Heuristic Expiration (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
787      <tr><td class="lineno" valign="top"></td><td class="left">      heuristic expiration time  10</td><td> </td><td class="right">      heuristic expiration time  10</td><td class="lineno" valign="top"></td></tr>
788      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
789      <tr><td class="lineno" valign="top"></td><td class="left">   M</td><td> </td><td class="right">   M</td><td class="lineno" valign="top"></td></tr>
790      <tr><td class="lineno" valign="top"></td><td class="left">      max-age (cache directive)  21, 26</td><td> </td><td class="right">      max-age (cache directive)  21, 26</td><td class="lineno" valign="top"></td></tr>
791      <tr><td><a name="diff0043" /></td></tr>
792      <tr><td class="lineno" valign="top"></td><td class="lblock">      max-stale (cache directive)  2<span class="delete">1</span></td><td> </td><td class="rblock">      max-stale (cache directive)  2<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
793      <tr><td class="lineno" valign="top"></td><td class="left">      min-fresh (cache directive)  22</td><td> </td><td class="right">      min-fresh (cache directive)  22</td><td class="lineno" valign="top"></td></tr>
794      <tr><td class="lineno" valign="top"></td><td class="left">      Miscellaneous Persistent Warning (warn-text)  31</td><td> </td><td class="right">      Miscellaneous Persistent Warning (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
795      <tr><td class="lineno" valign="top"></td><td class="left">      Miscellaneous Warning (warn-text)  31</td><td> </td><td class="right">      Miscellaneous Warning (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
796      <tr><td class="lineno" valign="top"></td><td class="left">      must-revalidate (cache directive)  23</td><td> </td><td class="right">      must-revalidate (cache directive)  23</td><td class="lineno" valign="top"></td></tr>
797      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
798      <tr><td class="lineno" valign="top"></td><td class="left">   N</td><td> </td><td class="right">   N</td><td class="lineno" valign="top"></td></tr>
799      <tr><td><a name="diff0044" /></td></tr>
800      <tr><td class="lineno" valign="top"></td><td class="lblock">      no-cache (cache directive)  22<span class="delete">-23</span></td><td> </td><td class="rblock">      no-cache (cache directive)  22<span class="insert">, 24</span></td><td class="lineno" valign="top"></td></tr>
801      <tr><td class="lineno" valign="top"></td><td class="left">      no-store (cache directive)  22, 24</td><td> </td><td class="right">      no-store (cache directive)  22, 24</td><td class="lineno" valign="top"></td></tr>
802      <tr><td><a name="diff0045" /></td></tr>
803      <tr><td class="lineno" valign="top"></td><td class="lblock">      no-transform (cache directive)  23<span class="delete">-24</span></td><td> </td><td class="rblock">      no-transform (cache directive)  23<span class="insert">, 25</span></td><td class="lineno" valign="top"></td></tr>
804      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
805      <tr><td class="lineno" valign="top"></td><td class="left">   O</td><td> </td><td class="right">   O</td><td class="lineno" valign="top"></td></tr>
806      <tr><td class="lineno" valign="top"></td><td class="left">      only-if-cached (cache directive)  23</td><td> </td><td class="right">      only-if-cached (cache directive)  23</td><td class="lineno" valign="top"></td></tr>
807      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
808      <tr><td class="lineno" valign="top"></td><td class="left">   P</td><td> </td><td class="right">   P</td><td class="lineno" valign="top"></td></tr>
809      <tr><td class="lineno" valign="top"></td><td class="left">      Pragma header field  28</td><td> </td><td class="right">      Pragma header field  28</td><td class="lineno" valign="top"></td></tr>
810      <tr><td class="lineno" valign="top"></td><td class="left">      private (cache directive)  25</td><td> </td><td class="right">      private (cache directive)  25</td><td class="lineno" valign="top"></td></tr>
811      <tr><td class="lineno" valign="top"></td><td class="left">      private cache  4</td><td> </td><td class="right">      private cache  4</td><td class="lineno" valign="top"></td></tr>
812      <tr><td><a name="diff0046" /></td></tr>
813      <tr><td class="lineno" valign="top"></td><td class="lblock">      proxy-revalidate (cache directive)  2<span class="delete">5</span></td><td> </td><td class="rblock">      proxy-revalidate (cache directive)  2<span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
814      <tr><td class="lineno" valign="top"></td><td class="left">      public (cache directive)  25</td><td> </td><td class="right">      public (cache directive)  25</td><td class="lineno" valign="top"></td></tr>
815      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
816      <tr><td class="lineno" valign="top"></td><td class="left">   R</td><td> </td><td class="right">   R</td><td class="lineno" valign="top"></td></tr>
817      <tr><td><a name="diff0047" /></td></tr>
818      <tr><td class="lineno" valign="top"></td><td class="lblock">      Response is Stale (warn-text)  3<span class="delete">0</span></td><td> </td><td class="rblock">      Response is Stale (warn-text)  3<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
819      <tr><td class="lineno" valign="top"></td><td class="left">      Revalidation Failed (warn-text)  31</td><td> </td><td class="right">      Revalidation Failed (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
820      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
821      <tr><td class="lineno" valign="top"></td><td class="left">   S</td><td> </td><td class="right">   S</td><td class="lineno" valign="top"></td></tr>
822      <tr><td class="lineno" valign="top"></td><td class="left">      s-maxage (cache directive)  26</td><td> </td><td class="right">      s-maxage (cache directive)  26</td><td class="lineno" valign="top"></td></tr>
823      <tr><td class="lineno" valign="top"></td><td class="left">      shared cache  4</td><td> </td><td class="right">      shared cache  4</td><td class="lineno" valign="top"></td></tr>
824      <tr><td class="lineno" valign="top"></td><td class="left">      stale  10</td><td> </td><td class="right">      stale  10</td><td class="lineno" valign="top"></td></tr>
825      <tr><td class="lineno" valign="top"></td><td class="left">      strong validator  18</td><td> </td><td class="right">      strong validator  18</td><td class="lineno" valign="top"></td></tr>
826      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
827      <tr><td class="lineno" valign="top"></td><td class="left">   T</td><td> </td><td class="right">   T</td><td class="lineno" valign="top"></td></tr>
828      <tr><td class="lineno" valign="top"></td><td class="left">      Transformation Applied (warn-text)  31</td><td> </td><td class="right">      Transformation Applied (warn-text)  31</td><td class="lineno" valign="top"></td></tr>
829
830     <tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
831     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 47 change blocks.&nbsp;</a></th></tr>
832     <tr class="stats"><td></td><th><i>160 lines changed or deleted</i></th><th><i> </i></th><th><i>93 lines changed or added</i></th><td></td></tr>
833     <tr><td colspan="5" align="center" class="small"><br/>This html diff was produced by rfcdiff 1.38. The latest version is available from <a href="http://www.tools.ietf.org/tools/rfcdiff/" >http://tools.ietf.org/tools/rfcdiff/</a> </td></tr>
834   </table>
835   </body>
836   </html>
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