Ignore:
Timestamp:
Feb 24, 2008, 3:25:13 AM (12 years ago)
Author:
julian.reschke@…
Message:

Fix artwork width problem.

File:
1 edited

Legend:

Unmodified
Added
Removed

  • draft-ietf-httpbis/diffs/draft-ietf-httpbis-p6-cache-02-from-1.diff.html

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    88<html>
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    … …  
    114114      <tr><td class="lineno" valign="top"></td><td class="left">     1.3.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">     1.3.  Requirements . . . . . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
    115115      <tr><td><a name="diff0005" /></td></tr>
    116       <tr><td class="lineno" valign="top"></td><td class="lblock">   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="rblock">   2.  <span class="insert">Notational Conventions and Generic Grammar . . . . . . . . . .  8</span></td><td class="lineno" valign="top"></td></tr>
    117       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.1.</span>  Cache Correctness  . . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="rblock"><span class="insert">   3.</span>  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
    118       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.2.</span>  Warnings . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="delete">8</span></td><td> </td><td class="rblock">     <span class="insert">3.1.</span>  Cache Correctness . . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
    119       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     2.3.</span>  Cache-control Mechanisms . . . . . . . . . . . . . . . . . 10</td><td> </td><td class="rblock">     <span class="insert">3.2.</span>  Warnings . . . . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
    120       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.4.</span>  Explicit User Agent Warnings . . . . . . . . . . . . . . . 10</td><td> </td><td class="rblock"><span class="insert">     3.3.</span>  Cache-control Mechanisms . . . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
    121       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.5.</span>  Exceptions to the Rules and Warnings . . . . . . . . . . . 11</td><td> </td><td class="rblock">     <span class="insert">3.4.</span>  Explicit User Agent Warnings . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
    122       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.6.</span>  Client-controlled Behavior . . . . . . . . . . . . . . . . 11</td><td> </td><td class="rblock">     <span class="insert">3.5.</span>  Exceptions to the Rules and Warnings . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
    123       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">3.</span>  Expiration Model . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">     <span class="insert">3.6.</span>  Client-controlled Behavior . . . . . . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
    124       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.1.</span>  Server-Specified Expiration  . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">   <span class="insert">4.</span>  Expiration Model . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
    125       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.2.</span>  Heuristic Expiration . . . . . . . . . . . . . . . . . . . <span class="delete">12</span></td><td> </td><td class="rblock"><span class="insert">     4.1.</span>  Server-Specified Expiration  . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
    126       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     3.3.</span>  Age Calculations . . . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="rblock"><span class="insert">     4.2.</span>  Heuristic Expiration . . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno" valign="top"></td></tr>
    127       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.4.</span>  Expiration Calculations  . . . . . . . . . . . . . . . . . 15</td><td> </td><td class="rblock"><span class="insert">     4.3.</span>  Age Calculations . . . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
    128       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.5.</span>  Disambiguating Expiration Values . . . . . . . . . . . . . 16</td><td> </td><td class="rblock">     <span class="insert">4.4.</span>  Expiration Calculations  . . . . . . . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
    129       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.6.</span>  Disambiguating Multiple Responses  . . . . . . . . . . . . <span class="delete">16</span></td><td> </td><td class="rblock">     <span class="insert">4.5.</span>  Disambiguating Expiration Values . . . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
    130       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   4.</span>  Validation Model . . . . . . . . . . . . . . . . . . . . . . . 17</td><td> </td><td class="rblock">     <span class="insert">4.6.</span>  Disambiguating Multiple Responses  . . . . . . . . . . . . <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
    131       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">4.1.  Last-Modified Dates  . . . . . . . . . . . . . . . . . . . 18</span></td><td> </td><td class="rblock"><span class="insert">   5.</span>  Validation Model . . . . . . . . . . . . . . . . . . . . . . . 17</td><td class="lineno" valign="top"></td></tr>
    132       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     4.2.  Entity Tag Cache Validators  . . . . . . . . . . . . . . . 18</span></td><td> </td><td class="rblock">   <span class="insert">6.</span>  Response Cacheability  . . . . . . . . . . . . . . . . . . . . 18</td><td class="lineno" valign="top"></td></tr>
    133       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     4.3.  Non-validating Conditionals  . . . . . . . . . . . . . . . 18</span></td><td> </td><td class="rblock">   <span class="insert">7.</span>  Constructing Responses From Caches . . . . . . . . . . . . . . 19</td><td class="lineno" valign="top"></td></tr>
    134       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   5.</span>  Response Cacheability  . . . . . . . . . . . . . . . . . . . . 18</td><td> </td><td class="rblock">     <span class="insert">7.1.</span>  End-to-end and Hop-by-hop Headers  . . . . . . . . . . . . 19</td><td class="lineno" valign="top"></td></tr>
    135       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">6.</span>  Constructing Responses From Caches . . . . . . . . . . . . . . 19</td><td> </td><td class="rblock">     <span class="insert">7.2.</span>  Non-modifiable Headers . . . . . . . . . . . . . . . . . . 20</td><td class="lineno" valign="top"></td></tr>
    136       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">6.1.</span>  End-to-end and Hop-by-hop Headers  . . . . . . . . . . . . 19</td><td> </td><td class="rblock">     <span class="insert">7.3.</span>  Combining Headers  . . . . . . . . . . . . . . . . . . . . 21</td><td class="lineno" valign="top"></td></tr>
    137       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">6.2.</span>  Non-modifiable Headers . . . . . . . . . . . . . . . . . . 20</td><td> </td><td class="rblock">   <span class="insert">8.</span>  Caching Negotiated Responses . . . . . . . . . . . . . . . . . 22</td><td class="lineno" valign="top"></td></tr>
    138       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">6.3.</span>  Combining Headers  . . . . . . . . . . . . . . . . . . . . 21</td><td> </td><td class="rblock">   <span class="insert">9.</span>  Shared and Non-Shared Caches . . . . . . . . . . . . . . . . . <span class="insert">23</span></td><td class="lineno" valign="top"></td></tr>
    139       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">7.</span>  Caching Negotiated Responses . . . . . . . . . . . . . . . . . 22</td><td> </td><td class="rblock"><span class="insert">   10.</span> Errors or Incomplete Response Cache Behavior . . . . . . . . . 24</td><td class="lineno" valign="top"></td></tr>
    140       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">8.</span>  Shared and Non-Shared Caches . . . . . . . . . . . . . . . . . <span class="delete">24</span></td><td> </td><td class="rblock">   <span class="insert">11.</span> Side Effects of GET and HEAD . . . . . . . . . . . . . . . . . 24</td><td class="lineno" valign="top"></td></tr>
    141       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   9.</span>  Errors or Incomplete Response Cache Behavior . . . . . . . . . 24</td><td> </td><td class="rblock">   <span class="insert">12.</span> Invalidation After Updates or Deletions  . . . . . . . . . . . <span class="insert">24</span></td><td class="lineno" valign="top"></td></tr>
    142       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">10.</span> Side Effects of GET and HEAD . . . . . . . . . . . . . . . . . 24</td><td> </td><td class="rblock"><span class="insert">   13.</span> Write-Through Mandatory  . . . . . . . . . . . . . . . . . . . <span class="insert">25</span></td><td class="lineno" valign="top"></td></tr>
    143       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">11.</span> Invalidation After Updates or Deletions  . . . . . . . . . . . <span class="delete">25</span></td><td> </td><td class="rblock"><span class="insert">   14.</span> Cache Replacement  . . . . . . . . . . . . . . . . . . . . . . 26</td><td class="lineno" valign="top"></td></tr>
    144       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   12.</span> Write-Through Mandatory  . . . . . . . . . . . . . . . . . . . <span class="delete">26</span></td><td> </td><td class="rblock">   <span class="insert">15.</span> History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 26</td><td class="lineno" valign="top"></td></tr>
    145       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   13.</span> Cache Replacement  . . . . . . . . . . . . . . . . . . . . . . 26</td><td> </td><td class="rblock">   <span class="insert">16.</span> Header Field Definitions . . . . . . . . . . . . . . . . . . . 27</td><td class="lineno" valign="top"></td></tr>
    146       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">14.</span> History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 26</td><td> </td><td class="rblock">     <span class="insert">16.1.</span> Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 27</td><td class="lineno" valign="top"></td></tr>
    147       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">15.</span> Header Field Definitions . . . . . . . . . . . . . . . . . . . 27</td><td> </td><td class="rblock">     <span class="insert">16.2.</span> Cache-Control  . . . . . . . . . . . . . . . . . . . . . . <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
    148       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">15.1.</span> Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 27</td><td> </td><td class="rblock"><span class="insert">       16.2.1.</span>  What is Cacheable . . . . . . . . . . . . . . . . . . <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
    149       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">15.2.</span> Cache-Control  . . . . . . . . . . . . . . . . . . . . . . <span class="delete">28</span></td><td> </td><td class="rblock"><span class="insert">       16.2.2.</span>  What May be Stored by Caches  . . . . . . . . . . . . <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
    150       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       15.2.1.</span>  What is Cacheable . . . . . . . . . . . . . . . . . . <span class="delete">30</span></td><td> </td><td class="rblock"><span class="insert">       16.2.3.</span>  Modifications of the Basic Expiration Mechanism . . . 31</td><td class="lineno" valign="top"></td></tr>
    151       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       15.2.2.</span>  What May be Stored by Caches  . . . . . . . . . . . . <span class="delete">31</span></td><td> </td><td class="rblock">       <span class="insert">16.2.4.</span>  Cache Revalidation and Reload Controls  . . . . . . . 33</td><td class="lineno" valign="top"></td></tr>
    152       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       15.2.3.</span>  Modifications of the Basic Expiration Mechanism . . . 31</td><td> </td><td class="rblock">       <span class="insert">16.2.5.</span>  No-Transform Directive  . . . . . . . . . . . . . . . <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
    153       <tr><td class="lineno" valign="top"></td><td class="lblock">       <span class="delete">15.2.4.</span>  Cache Revalidation and Reload Controls  . . . . . . . 33</td><td> </td><td class="rblock"><span class="insert">       16.2.6.</span>  Cache Control Extensions  . . . . . . . . . . . . . . <span class="insert">36</span></td><td class="lineno" valign="top"></td></tr>
    154       <tr><td class="lineno" valign="top"></td><td class="lblock">       <span class="delete">15.2.5.</span>  No-Transform Directive  . . . . . . . . . . . . . . . <span class="delete">36</span></td><td> </td><td class="rblock"><span class="insert">     16.3.</span> Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 37</td><td class="lineno" valign="top"></td></tr>
    155       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">       15.2.6.</span>  Cache Control Extensions  . . . . . . . . . . . . . . <span class="delete">37</span></td><td> </td><td class="rblock">     <span class="insert">16.4.</span> Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 38</td><td class="lineno" valign="top"></td></tr>
    156       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.3.</span> Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 37</td><td> </td><td class="rblock">     <span class="insert">16.5.</span> Vary . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
    157       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">15.4.</span> Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 38</td><td> </td><td class="rblock"><span class="insert">     16.6.</span> Warning  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
    158       <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">15.5.</span> Vary . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">39</span></td><td> </td><td class="rblock"><span class="insert">   17.</span> IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
    159       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     15.6.</span> Warning  . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">40</span></td><td> </td><td class="rblock"><span class="insert">   18.</span> Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
    160       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   16.</span> IANA Considerations  . . . . . . . . . . . . . . . . . . . . . <span class="delete">43</span></td><td> </td><td class="rblock"><span class="insert">   19.</span> Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
    161       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   17.</span> Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="delete">43</span></td><td> </td><td class="rblock"><span class="insert">   20.</span> References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
    162       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   18.</span> Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">43</span></td><td> </td><td class="rblock"><span class="insert">     20.1.</span> Normative References . . . . . . . . . . . . . . . . . . . <span class="insert">42</span></td><td class="lineno" valign="top"></td></tr>
    163       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   19.</span> References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">43</span></td><td> </td><td class="rblock"><span class="insert">     20.2.</span> Informative References . . . . . . . . . . . . . . . . . . 44</td><td class="lineno" valign="top"></td></tr>
    164       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     19.1.</span> Normative References . . . . . . . . . . . . . . . . . . . <span class="delete">43</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    165       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     19.2.</span> Informative References . . . . . . . . . . . . . . . . . . 44</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     116      <tr><td class="lineno" valign="top"></td><td class="lblock">   2.  <span class="delete">Overview . . . . . . . . . . . . . . . . .</span> . . . . . . . . . .  8</td><td> </td><td class="rblock">   2.  <span class="insert">Notational Conventions and Generic Grammar</span> . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
     117      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  2.1.  Cache Correctness </span> . . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="rblock">   <span class="insert">3.  Overview . . . . . . .</span> . . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
     118      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.2.  Warnings . . . . .</span> . . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="rblock">     <span class="insert">3.1.  Cache Correctness </span> . . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
     119      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.3.  Cache-control Mechanisms . . . . . . . . . . . . . . . . . 10</span></td><td> </td><td class="rblock">     <span class="insert">3.2.  Warnings . . . . . . . . . . . . . . . . . . . . . . . . .  9</span></td><td class="lineno" valign="top"></td></tr>
     120      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.4.  Explicit User Agent Warnings</span> . . . . . . . . . . . . . . . 10</td><td> </td><td class="rblock">     <span class="insert">3.3.  Cache-control Mechanisms . .</span> . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
     121      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.5.  Exceptions to the Rules and Warnings . . . . . . . . . . . 11</span></td><td> </td><td class="rblock">     <span class="insert">3.4.  Explicit User Agent Warnings . . . . . . . . . . . . . . . 10</span></td><td class="lineno" valign="top"></td></tr>
     122      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">2.6.  Client-controlled Behavior . . . . .</span> . . . . . . . . . . . 11</td><td> </td><td class="rblock">     <span class="insert">3.5.  Exceptions to the Rules and Warnings</span> . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
     123      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">3.  Expiration Model . . . . . . .</span> . . . . . . . . . . . . . . . . 11</td><td> </td><td class="rblock">   <span class="insert">  3.6.  Client-controlled Behavior</span> . . . . . . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
     124      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  3.1.  Server-Specified Expiration  . . . . . . . . . . . . . . . 11</span></td><td> </td><td class="rblock">   <span class="insert">4.  Expiration Model . . . . . . . . . . . . . . . . . . . . . . . 12</span></td><td class="lineno" valign="top"></td></tr>
     125      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.2.  Heuristic Expiration . . . .</span> . . . . . . . . . . . . . . . 12</td><td> </td><td class="rblock">     <span class="insert">4.1.  Server-Specified Expiration </span> . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
     126      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.3.  Age Calculations . .</span> . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="rblock">     <span class="insert">4.2.  Heuristic Expiration</span> . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
     127      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.4.  Expiration Calculations  . . . . . . . . . . . . . . . . . 15</span></td><td> </td><td class="rblock">     <span class="insert">4.3.  Age Calculations . . . . . . . . . . . . . . . . . . . . . 13</span></td><td class="lineno" valign="top"></td></tr>
     128      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.5.  Disambiguating Expiration Values . . . . . . . . . . . . . 16</span></td><td> </td><td class="rblock">     <span class="insert">4.4.  Expiration Calculations  . . . . . . . . . . . . . . . . . 15</span></td><td class="lineno" valign="top"></td></tr>
     129      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">3.6.  Disambiguating Multiple Responses </span> . . . . . . . . . . . . 16</td><td> </td><td class="rblock">     <span class="insert">4.5.  Disambiguating Expiration Values .</span> . . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
     130      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">4.  Validation Model . . . . . . . . . . .</span> . . . . . . . . . . . . 17</td><td> </td><td class="rblock">   <span class="insert">  4.6.  Disambiguating Multiple Responses </span> . . . . . . . . . . . . 17</td><td class="lineno" valign="top"></td></tr>
     131      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  4.1.  Last-Modified Dates  . . . . . . . . . . . . . . . . . . . 18</span></td><td> </td><td class="rblock">   <span class="insert">5.  Validation Model . . . . . . . . . . . . . . . . . . . . . . . 17</span></td><td class="lineno" valign="top"></td></tr>
     132      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  4.2.  Entity Tag Cache Validators </span> . . . . . . . . . . . . . . . 18</td><td> </td><td class="rblock">   <span class="insert">6.  Response Cacheability  . . . . .</span> . . . . . . . . . . . . . . . 18</td><td class="lineno" valign="top"></td></tr>
     133      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  4.3.  Non-validating Conditionals  . . . . . . . . . . . . . . . 18</span></td><td> </td><td class="rblock">   <span class="insert">7.  Constructing Responses From Caches . . . . . . . . . . . . . . 19</span></td><td class="lineno" valign="top"></td></tr>
     134      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">5.  Response Cacheability  . . . . . . . . . . . . . . . . . . . . 18</span></td><td> </td><td class="rblock">   <span class="insert">  7.1.  End-to-end and Hop-by-hop Headers  . . . . . . . . . . . . 19</span></td><td class="lineno" valign="top"></td></tr>
     135      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">6.  Constructing Responses From Caches . . . . . . . . . . . . . . 19</span></td><td> </td><td class="rblock">   <span class="insert">  7.2.  Non-modifiable Headers . . . . . . . . . . . . . . . . . . 20</span></td><td class="lineno" valign="top"></td></tr>
     136      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">6.1.  End-to-end and Hop-by-hop Headers  . . . . . . . . . . . . 19</span></td><td> </td><td class="rblock">     <span class="insert">7.3.  Combining Headers  . . . . . . . . . . . . . . . . . . . . 21</span></td><td class="lineno" valign="top"></td></tr>
     137      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  6.2.  Non-modifiable Headers . . . . . . . . . . . . . . . . . . 20</span></td><td> </td><td class="rblock">   <span class="insert">8.  Caching Negotiated Responses . . . . . . . . . . . . . . . . . 22</span></td><td class="lineno" valign="top"></td></tr>
     138      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  6.3.  Combining Headers  . . . . . . . . . . . . . . . . . . . . 21</span></td><td> </td><td class="rblock">   <span class="insert">9.  Shared and Non-Shared Caches . . . . . . . . . . . . . . . . . 23</span></td><td class="lineno" valign="top"></td></tr>
     139      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">7.  Caching Negotiated Responses . . . . . . . . . . . . . . . . . 22</span></td><td> </td><td class="rblock">   <span class="insert">10. Errors or Incomplete Response Cache Behavior . . . . . . . . . 24</span></td><td class="lineno" valign="top"></td></tr>
     140      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">8.  Shared and Non-Shared Caches</span> . . . . . . . . . . . . . . . . . 24</td><td> </td><td class="rblock">   <span class="insert">11. Side Effects of GET and HEAD</span> . . . . . . . . . . . . . . . . . 24</td><td class="lineno" valign="top"></td></tr>
     141      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">9.  Errors or Incomplete Response Cache Behavior</span> . . . . . . . . . 24</td><td> </td><td class="rblock">   <span class="insert">12. Invalidation After Updates or Deletions  . .</span> . . . . . . . . . 24</td><td class="lineno" valign="top"></td></tr>
     142      <tr><td class="lineno" valign="top"></td><td class="lblock">   1<span class="delete">0. Side Effects of GET and HEAD . . . . . . . . . . . . . . . . . 24</span></td><td> </td><td class="rblock">   1<span class="insert">3. Write-Through Mandatory  . . . . . . . . . . . . . . . . . . . 25</span></td><td class="lineno" valign="top"></td></tr>
     143      <tr><td class="lineno" valign="top"></td><td class="lblock">   1<span class="delete">1. Invalidation After Updates or Deletions  . . . . . . . . . . . 25</span></td><td> </td><td class="rblock">   1<span class="insert">4. Cache Replacement  . . . . . . . . . . . . . . . . . . . . . . 26</span></td><td class="lineno" valign="top"></td></tr>
     144      <tr><td class="lineno" valign="top"></td><td class="lblock">   1<span class="delete">2. Write-Through Mandatory </span> . . . . . . . . . . . . . . . . . . . 26</td><td> </td><td class="rblock">   1<span class="insert">5. History Lists  . . . . .</span> . . . . . . . . . . . . . . . . . . . 26</td><td class="lineno" valign="top"></td></tr>
     145      <tr><td class="lineno" valign="top"></td><td class="lblock">   1<span class="delete">3. Cache Replacement  . . . . . . . . . . . . . . . . . . . . . . 26</span></td><td> </td><td class="rblock">   1<span class="insert">6. Header Field Definitions . . . . . . . . . . . . . . . . . . . 27</span></td><td class="lineno" valign="top"></td></tr>
     146      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">14. History Lists  . . . . . . . . . . . . . . . . . . . . . . . . 26</span></td><td> </td><td class="rblock">   <span class="insert">  16.1. Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 27</span></td><td class="lineno" valign="top"></td></tr>
     147      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">15. Header Field Definitions</span> . . . . . . . . . . . . . . . . . . . 27</td><td> </td><td class="rblock">   <span class="insert">  16.2. Cache-Control  . . .</span> . . . . . . . . . . . . . . . . . . . 27</td><td class="lineno" valign="top"></td></tr>
     148      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">15.1. Age  . . . . . . . . . . . . . . . . . . . . . . . . . . . 27</span></td><td> </td><td class="rblock">     <span class="insert">  16.2.1.  What is Cacheable . . . . . . . . . . . . . . . . . . 29</span></td><td class="lineno" valign="top"></td></tr>
     149      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">15.2. Cache-Control  . . . . . . . . . . . . . . . . . . . . . . 28</span></td><td> </td><td class="rblock">     <span class="insert">  16.2.2.  What May be Stored by Caches  . . . . . . . . . . . . 30</span></td><td class="lineno" valign="top"></td></tr>
     150      <tr><td class="lineno" valign="top"></td><td class="lblock">       1<span class="delete">5.2.1.  What is Cacheable . . . . . . . . . . . . . . . . . . 30</span></td><td> </td><td class="rblock">       1<span class="insert">6.2.3.  Modifications of the Basic Expiration Mechanism . . . 31</span></td><td class="lineno" valign="top"></td></tr>
     151      <tr><td class="lineno" valign="top"></td><td class="lblock">       1<span class="delete">5.2.2.  What May be Stored by Caches  . . . . . . . . . . . . 31</span></td><td> </td><td class="rblock">       1<span class="insert">6.2.4.  Cache Revalidation and Reload Controls  . . . . . . . 33</span></td><td class="lineno" valign="top"></td></tr>
     152      <tr><td class="lineno" valign="top"></td><td class="lblock">       1<span class="delete">5.2.3.  Modifications of the Basic Expiration Mechanism . . . 31</span></td><td> </td><td class="rblock">       1<span class="insert">6.2.5.  No-Transform Directive  . . . . . . . . . . . . . . . 35</span></td><td class="lineno" valign="top"></td></tr>
     153      <tr><td class="lineno" valign="top"></td><td class="lblock">       1<span class="delete">5.2.4.  Cache Revalidation and Reload Controls  . . . . . . . 33</span></td><td> </td><td class="rblock">       1<span class="insert">6.2.6.  Cache Control Extensions  . . . . . . . . . . . . . . 36</span></td><td class="lineno" valign="top"></td></tr>
     154      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">  15.2.5.  No-Transform Directive  . . . . . . . . . . . . . . . 36</span></td><td> </td><td class="rblock">     <span class="insert">16.3. Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 37</span></td><td class="lineno" valign="top"></td></tr>
     155      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">  15.2.6.  Cache Control Extensions  . . . . . . . . . . . . . . 37</span></td><td> </td><td class="rblock">     <span class="insert">16.4. Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 38</span></td><td class="lineno" valign="top"></td></tr>
     156      <tr><td class="lineno" valign="top"></td><td class="lblock">     1<span class="delete">5.3. Expires  . . . . . . . . . . . . . . . . . . . . . . . . . 37</span></td><td> </td><td class="rblock">     1<span class="insert">6.5. Vary . . . . . . . . . . . . . . . . . . . . . . . . . . . 38</span></td><td class="lineno" valign="top"></td></tr>
     157      <tr><td class="lineno" valign="top"></td><td class="lblock">     1<span class="delete">5.4. Pragma . . . . . . . . . . . . . . . . . . . . . . . . . . 38</span></td><td> </td><td class="rblock">     1<span class="insert">6.6. Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 39</span></td><td class="lineno" valign="top"></td></tr>
     158      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  15.5. Vary . . . . . . . . . . . . . . . . . . . . . . . . . . . 39</span></td><td> </td><td class="rblock">   <span class="insert">17. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 42</span></td><td class="lineno" valign="top"></td></tr>
     159      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">  15.6. Warning  . . . . . . . . . . . . . . . . . . . . . . . . . 40</span></td><td> </td><td class="rblock">   <span class="insert">18. Security Considerations  . . . . . . . . . . . . . . . . . . . 42</span></td><td class="lineno" valign="top"></td></tr>
     160      <tr><td class="lineno" valign="top"></td><td class="lblock">   1<span class="delete">6. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 43</span></td><td> </td><td class="rblock">   1<span class="insert">9. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 42</span></td><td class="lineno" valign="top"></td></tr>
     161      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">17. Security Considerations  . . . . . . . . . . . . . . . . . . . 43</span></td><td> </td><td class="rblock">   <span class="insert">20. References . . . . . . . . . . . . . . . . . . . . . . . . . . 42</span></td><td class="lineno" valign="top"></td></tr>
     162      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">18. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 43</span></td><td> </td><td class="rblock">   <span class="insert">  20.1. Normative References . . . . . . . . . . . . . . . . . . . 42</span></td><td class="lineno" valign="top"></td></tr>
     163      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">19. References . . . . . . . . . . . . . . . . . . . . . . . . . . 43</span></td><td> </td><td class="rblock">   <span class="insert">  20.2. Informative References . . . . . . . . . . . . . . . . . . 44</span></td><td class="lineno" valign="top"></td></tr>
     164      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     19.1. Normative References . . . . . . . . . . . . . . . . . . . 43</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     165      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     19.2. Informative References . . . . . . . . . . . . . . . . . . 44</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    166166      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix A.  Compatibility with Previous Versions  . . . . . . . . 44</td><td> </td><td class="right">   Appendix A.  Compatibility with Previous Versions  . . . . . . . . 44</td><td class="lineno" valign="top"></td></tr>
    167167      <tr><td class="lineno" valign="top"></td><td class="left">     A.1.  Changes from RFC 2068  . . . . . . . . . . . . . . . . . . 44</td><td> </td><td class="right">     A.1.  Changes from RFC 2068  . . . . . . . . . . . . . . . . . . 44</td><td class="lineno" valign="top"></td></tr>
    … …  
    203203      <tr><td><a name="diff0010" /></td></tr>
    204204      <tr><td class="lineno" valign="top"></td><td class="lblock">   performance.  The goal of caching in HTTP/1.1 is to <span class="delete">eliminate the</span></td><td> </td><td class="rblock">   performance.  The goal of caching in HTTP/1.1 is to <span class="insert">reuse a prior</span></td><td class="lineno" valign="top"></td></tr>
    205       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   need</span> to <span class="delete">send requests in many</span> cases, <span class="delete">and to eliminate</span> the <span class="delete">need to</span></td><td> </td><td class="rblock"><span class="insert">   response message</span> to <span class="insert">satisfy a current request.  In some</span> cases, the</td><td class="lineno" valign="top"></td></tr>
    206       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   send full responses in many other cases.  The former reduces</span> the</td><td> </td><td class="rblock">   <span class="insert">existing response can be reused without</span> the <span class="insert">need</span> for <span class="insert">a network</span></td><td class="lineno" valign="top"></td></tr>
    207       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">number of network round-trips required</span> for <span class="delete">many operations;</span> we use an</td><td> </td><td class="rblock"><span class="insert">   request, reducing latency and network round-trips;</span> we use an</td><td class="lineno" valign="top"></td></tr>
     205      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">need to send requests in many cases, and to eliminate the need to</span></td><td> </td><td class="rblock">   <span class="insert">response message to satisfy a current request.  In some cases, the</span></td><td class="lineno" valign="top"></td></tr>
     206      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">send full responses in many other cases.  The former reduces the</span></td><td> </td><td class="rblock">   <span class="insert">existing response can be reused without the need for a network</span></td><td class="lineno" valign="top"></td></tr>
     207      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">number of network round-trips required for many operation</span>s; we use an</td><td> </td><td class="rblock">   <span class="insert">request, reducing latency and network round-trip</span>s; we use an</td><td class="lineno" valign="top"></td></tr>
    208208      <tr><td class="lineno" valign="top"></td><td class="lblock">   "expiration" mechanism for this purpose (see Section <span class="delete">3).  The latter</span></td><td> </td><td class="rblock">   "expiration" mechanism for this purpose (see Section <span class="insert">4).  Even when a</span></td><td class="lineno" valign="top"></td></tr>
    209       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   reduces</span> network bandwidth <span class="delete">requirements;</span> we use a "validation"</td><td> </td><td class="rblock"><span class="insert">   new request is required, it is often possible to reuse all or parts</span></td><td class="lineno" valign="top"></td></tr>
    210       <tr><td class="lineno" valign="top"></td><td class="lblock">   mechanism for this purpose (see Section <span class="delete">4).</span></td><td> </td><td class="rblock"><span class="insert">   of the payload of a prior response to satisfy the request, thereby</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">   reducing</span> network bandwidth <span class="insert">usage;</span> we use a "validation" mechanism for</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">   this purpose (see Section <span class="insert">5).</span></td><td class="lineno" valign="top"></td></tr>
     209      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">reduces network bandwidth requirements; we use a "validation"</span></td><td> </td><td class="rblock">   <span class="insert">new request is required, it is often possible to reuse all or parts</span></td><td class="lineno" valign="top"></td></tr>
     210      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">mechanism for this purpose (see Section 4).</span></td><td> </td><td class="rblock">   <span class="insert">of the payload of a prior response to satisfy the request, thereby</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">   reducing network bandwidth usage; we use a "validation" mechanism for</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">   this purpose (see Section 5).</span></td><td class="lineno" valign="top"></td></tr>
    213213      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    214214      <tr><td class="lineno" valign="top"></td><td class="left">   A cache behaves in a "semantically transparent" manner, with respect</td><td> </td><td class="right">   A cache behaves in a "semantically transparent" manner, with respect</td><td class="lineno" valign="top"></td></tr>
    … …  
    217217      <tr><td class="lineno" valign="top"></td><td class="left">   cache is semantically transparent, the client receives exactly the</td><td> </td><td class="right">   cache is semantically transparent, the client receives exactly the</td><td class="lineno" valign="top"></td></tr>
    218218      <tr><td><a name="diff0011" /></td></tr>
    219       <tr><td class="lineno" valign="top"></td><td class="lblock">   same response <span class="delete">(except for hop-by-hop headers)</span> that it would have</td><td> </td><td class="rblock">   same response <span class="insert">status and payload</span> that it would have received had its</td><td class="lineno" valign="top"></td></tr>
    220       <tr><td class="lineno" valign="top"></td><td class="lblock">   received had its request been handled directly by the origin server.</td><td> </td><td class="rblock">   request been handled directly by the origin server.</td><td class="lineno" valign="top"></td></tr>
     219      <tr><td class="lineno" valign="top"></td><td class="lblock">   same response <span class="delete">(except for hop-by-hop headers) that it would have</span></td><td> </td><td class="rblock">   same response <span class="insert">status and payload that it would have received had its</span></td><td class="lineno" valign="top"></td></tr>
     220      <tr><td class="lineno" valign="top"></td><td class="lblock">   re<span class="delete">ceived had its re</span>quest been handled directly by the origin server.</td><td> </td><td class="rblock">   request been handled directly by the origin server.</td><td class="lineno" valign="top"></td></tr>
    221221      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    222222      <tr><td class="lineno" valign="top"></td><td class="left">   In an ideal world, all interactions with an HTTP cache would be</td><td> </td><td class="right">   In an ideal world, all interactions with an HTTP cache would be</td><td class="lineno" valign="top"></td></tr>
    … …  
    269269      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    270270      <tr><td><a name="diff0014" /></td></tr>
    271       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">2.1.</span>  Cache Correctness</td><td> </td><td class="rblock">   <span class="insert">This specification uses the ABNF syntax defined in Section 2.1 of</span></td><td class="lineno" valign="top"></td></tr>
     271      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">2.1.  Cache Correctness</span></td><td> </td><td class="rblock"><span class="insert">   This specification uses the ABNF syntax defined in Section 2.1 of</span></td><td class="lineno" valign="top"></td></tr>
    272272      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   [Part1] and the core rules defined in Section 2.2 of [Part1]:</span></td><td class="lineno" valign="top"></td></tr>
    273273      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   [[abnf.dep: ABNF syntax and basic rules will be adopted from RFC</span></td><td class="lineno" valign="top"></td></tr>
    274274      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   5234, see &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/36&gt;.]]</span></td><td class="lineno" valign="top"></td></tr>
    275       <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>
     275      <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>
    276276      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     DIGIT         = &lt;DIGIT, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
    277277      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     DQUOTE        = &lt;DQUOTE, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
    278278      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     SP            = &lt;SP, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
    279       <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>
     279      <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>
    280280      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     quoted-string = &lt;quoted-string, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
    281281      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     token         = &lt;token, defined in [Part1], Section 2.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
    282       <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>
     282      <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>
    283283      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   The ABNF rules below are defined in other parts:</span></td><td class="lineno" valign="top"></td></tr>
    284       <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>
     284      <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>
    285285      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     field-name    = &lt;field-name, defined in [Part1], Section 4.2&gt;</span></td><td class="lineno" valign="top"></td></tr>
    286286      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     HTTP-date     = &lt;HTTP-date, defined in [Part1], Section 3.3.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
    … …  
    288288      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     pseudonym     = &lt;pseudonym, defined in [Part1], Section 8.9&gt;</span></td><td class="lineno" valign="top"></td></tr>
    289289      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">     uri-host      = &lt;uri-host, defined in [Part1], Section 3.2.1&gt;</span></td><td class="lineno" valign="top"></td></tr>
    290       <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>
     290      <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>
    291291      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">3.  Overview</span></td><td class="lineno" valign="top"></td></tr>
    292       <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>
    293       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">3.1.</span>  Cache Correctness</td><td class="lineno" valign="top"></td></tr>
     292      <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>
     293      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">3.1.  Cache Correctness</span></td><td class="lineno" valign="top"></td></tr>
    294294      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    295295      <tr><td class="lineno" valign="top"></td><td class="left">   A correct cache MUST respond to a request with the most up-to-date</td><td> </td><td class="right">   A correct cache MUST respond to a request with the most up-to-date</td><td class="lineno" valign="top"></td></tr>
    … …  
    666666      <tr><td class="lineno" valign="top"></td><td class="left">   see if its cached entry is still usable.  We call this "validating"</td><td> </td><td class="right">   see if its cached entry is still usable.  We call this "validating"</td><td class="lineno" valign="top"></td></tr>
    667667      <tr><td><a name="diff0046" /></td></tr>
    668       <tr><td class="lineno" valign="top"></td><td class="lblock">   the cache entry.  <span class="delete">Since we do not want to have to pay the overhead of</span></td><td> </td><td class="rblock">   the cache entry.</td><td class="lineno" valign="top"></td></tr>
     668      <tr><td class="lineno" valign="top"></td><td class="lblock">   the cache entry.<span class="delete">  Since we do not want to have to pay the overhead of</span></td><td> </td><td class="rblock">   the cache entry.</td><td class="lineno" valign="top"></td></tr>
    669669      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   retransmitting the full response if the cached entry is good, and we</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    670670      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   do not want to pay the overhead of an extra round trip if the cached</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    671671      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   entry is invalid, the HTTP/1.1 protocol supports the use of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    672672      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   conditional methods.</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>
     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>
    674674      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The key protocol features for supporting conditional methods are</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    675675      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   those concerned with "cache validators."  When an origin server</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    679679      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   has a cache entry, it includes the associated validator in the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    680680      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request.</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>
     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>
    682682      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The server then checks that validator against the current validator</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    683683      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   for the entity, and, if they match (see Section 4 of [Part4]), it</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    687687      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   validator matches, and we avoid an extra round trip if it does not</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    688688      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   match.</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"></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">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    690690      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   In HTTP/1.1, a conditional request looks exactly the same as a normal</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    691691      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   request for the same resource, except that it carries a special</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    692692      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   header (which includes the validator) that implicitly turns the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    693693      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   method (usually, GET) into a conditional.</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"></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">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    695695      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The protocol includes both positive and negative senses of cache-</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    696696      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   validating conditions.  That is, it is possible to request either</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    697697      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that a method be performed if and only if a validator matches or if</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    698698      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   and only if no validators match.</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"></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">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    700700      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Note: a response that lacks a validator may still be cached, and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    701701      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      served from cache until it expires, unless this is explicitly</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    703703      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      do a conditional retrieval if it does not have a validator for the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    704704      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      entity, which means it will not be refreshable after it expires.</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"></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">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    706706      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.1.  Last-Modified Dates</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"></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">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    708708      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The Last-Modified entity-header field value is often used as a cache</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    709709      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   validator.  In simple terms, a cache entry is considered to be valid</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    710710      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   if the entity has not been modified since the Last-Modified value.</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="lblock"><span class="delete"></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="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    712712      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.2.  Entity Tag Cache Validators</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    713       <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>
     713      <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>
    714714      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The ETag response-header field value, an entity tag, provides for an</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    715715      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   "opaque" cache validator.  This might allow more reliable validation</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    … …  
    718718      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   sufficient, or where the origin server wishes to avoid certain</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    719719      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   paradoxes that might arise from the use of modification dates.</span></td><td> </td><td class="rblock"></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>
     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>
    721721      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Entity Tags are described in Section 2 of [Part4].  The headers used</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    722722      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   with entity tags are described in Section 6 of [Part4].</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>
     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>
    724724      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">4.3.  Non-validating Conditionals</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    725725      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    726726      <tr><td><a name="diff0047" /></td></tr>
    727       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">The principle behind entity tags</span> is <span class="delete">that only</span> the <span class="delete">service author</span></td><td> </td><td class="rblock">   <span class="insert">HTTP's conditional request mechanism, defined in [Part4],</span> is <span class="insert">used to</span></td><td class="lineno" valign="top"></td></tr>
    728       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   knows</span> the <span class="delete">semantics</span> of a <span class="delete">resource well enough</span> to <span class="delete">select an</span></td><td> </td><td class="rblock"><span class="insert">   avoid retransmitting</span> the <span class="insert">response payload when</span> the <span class="insert">cached entry is</span></td><td class="lineno" valign="top"></td></tr>
    729       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   appropriate cache validation mechanism, and</span> the <span class="delete">specification of any</span></td><td> </td><td class="rblock"><span class="insert">   valid.  When a cached response includes one or more "cache</span></td><td class="lineno" valign="top"></td></tr>
    730       <tr><td class="lineno" valign="top"></td><td class="lblock">   validator <span class="delete">comparison function more complex than byte-equality would</span></td><td> </td><td class="rblock"><span class="insert">   validators," such as the field values</span> of <span class="insert">an ETag or Last-Modified</span></td><td class="lineno" valign="top"></td></tr>
    731       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   open up a can of worms.  Thus, comparisons</span> of <span class="delete">any other headers</span></td><td> </td><td class="rblock"><span class="insert">   header field, then</span> a <span class="insert">validating GET request SHOULD be made</span></td><td class="lineno" valign="top"></td></tr>
    732       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (except Last-Modified, for compatibility</span> with <span class="delete">HTTP/1.0) are never</span></td><td> </td><td class="rblock"><span class="insert">   conditional</span> to <span class="insert">those field values.  The server checks</span> the <span class="insert">conditional</span></td><td class="lineno" valign="top"></td></tr>
    733       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   used for purposes</span> of <span class="delete">validating</span> a cache <span class="delete">entry.</span></td><td> </td><td class="rblock"><span class="insert">   request's</span> validator <span class="insert">against the current state</span> of <span class="insert">the requested</span></td><td class="lineno" valign="top"></td></tr>
    734       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   resource and, if they match, the server responds</span> with <span class="insert">a 304 (Not</span></td><td class="lineno" valign="top"></td></tr>
     727      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">The principle behind entity tags is that only the service author</span></td><td> </td><td class="rblock">   <span class="insert">HTTP's conditional request mechanism, defined in [Part4], is used to</span></td><td class="lineno" valign="top"></td></tr>
     728      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">knows the semantics of a resource well enough to select an</span></td><td> </td><td class="rblock">   <span class="insert">avoid retransmitting the response payload when the cached entry is</span></td><td class="lineno" valign="top"></td></tr>
     729      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">appropriate cache validation mechanism, and the specification of any</span></td><td> </td><td class="rblock">   <span class="insert">valid.  When a cached response includes one or more "cache</span></td><td class="lineno" valign="top"></td></tr>
     730      <tr><td class="lineno" valign="top"></td><td class="lblock">   validator<span class="delete"> comparison function more complex than byte-equality woul</span>d</td><td> </td><td class="rblock">   validator<span class="insert">s," such as the field values of an ETag or Last-Modifie</span>d</td><td class="lineno" valign="top"></td></tr>
     731      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">open up a can of worms.  Thus, comparisons of any other headers</span></td><td> </td><td class="rblock">   <span class="insert">header field, then a validating GET request SHOULD be made</span></td><td class="lineno" valign="top"></td></tr>
     732      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">(except Last-Modified, for compatibility with HTTP/1.0) are never</span></td><td> </td><td class="rblock">   <span class="insert">conditional to those field values.  The server checks the conditional</span></td><td class="lineno" valign="top"></td></tr>
     733      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">used for purposes of validating a cache entry.</span></td><td> </td><td class="rblock">   <span class="insert">request's validator against the current state of the requested</span></td><td class="lineno" valign="top"></td></tr>
     734      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   resource and, if they match, the server responds with a 304 (Not</span></td><td class="lineno" valign="top"></td></tr>
    735735      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Modified) status code to indicate that the cached response can be</span></td><td class="lineno" valign="top"></td></tr>
    736736      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   refreshed and reused without retransmitting the response payload.  If</span></td><td class="lineno" valign="top"></td></tr>
    737       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   the validator does not match the current state</span> of <span class="insert">the requested</span></td><td class="lineno" valign="top"></td></tr>
    738       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   resource, then the server returns</span> a <span class="insert">full response, including payload,</span></td><td class="lineno" valign="top"></td></tr>
    739       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   so that the request can be satisfied and the</span> cache <span class="insert">entry supplanted</span></td><td class="lineno" valign="top"></td></tr>
     737      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   the validator does not match the current state of the requested</span></td><td class="lineno" valign="top"></td></tr>
     738      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   resource, then the server returns a full response, including payload,</span></td><td class="lineno" valign="top"></td></tr>
     739      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   so that the request can be satisfied and the cache entry supplanted</span></td><td class="lineno" valign="top"></td></tr>
    740740      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   without the need for an additional network round-trip.</span></td><td class="lineno" valign="top"></td></tr>
    741741      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    … …  
    747747      <tr><td class="lineno" valign="top"></td><td class="left">   directive, a caching system MAY always store a successful response</td><td> </td><td class="right">   directive, a caching system MAY always store a successful response</td><td class="lineno" valign="top"></td></tr>
    748748      <tr><td><a name="diff0050" /></td></tr>
    749       <tr><td class="lineno" valign="top"></td><td class="lblock">   (see Section <span class="delete">9)</span> as a cache entry, MAY return it without validation if</td><td> </td><td class="rblock">   (see Section <span class="insert">10)</span> as a cache entry, MAY return it without validation</td><td class="lineno" valign="top"></td></tr>
    750       <tr><td class="lineno" valign="top"></td><td class="lblock">   it is fresh, and MAY return it after successful validation.  If there</td><td> </td><td class="rblock">   if it is fresh, and MAY return it after successful validation.  If</td><td class="lineno" valign="top"></td></tr>
    751       <tr><td class="lineno" valign="top"></td><td class="lblock">   is neither a cache validator nor an explicit expiration time</td><td> </td><td class="rblock">   there is neither a cache validator nor an explicit expiration time</td><td class="lineno" valign="top"></td></tr>
     749      <tr><td class="lineno" valign="top"></td><td class="lblock">   (see Section <span class="delete">9) as a cache entry, MAY return it without validation if</span></td><td> </td><td class="rblock">   (see Section <span class="insert">10) as a cache entry, MAY return it without validation</span></td><td class="lineno" valign="top"></td></tr>
     750      <tr><td class="lineno" valign="top"></td><td class="lblock">   i<span class="delete">t is fresh, and MAY return it after successful validation.  If there</span></td><td> </td><td class="rblock">   i<span class="insert">f it is fresh, and MAY return it after successful validation.  If</span></td><td class="lineno" valign="top"></td></tr>
     751      <tr><td class="lineno" valign="top"></td><td class="lblock">   is neither a cache validator nor an explicit expiration time</td><td> </td><td class="rblock">   <span class="insert">there </span>is neither a cache validator nor an explicit expiration time</td><td class="lineno" valign="top"></td></tr>
    752752      <tr><td class="lineno" valign="top"></td><td class="left">   associated with a response, we do not expect it to be cached, but</td><td> </td><td class="right">   associated with a response, we do not expect it to be cached, but</td><td class="lineno" valign="top"></td></tr>
    753753      <tr><td class="lineno" valign="top"></td><td class="left">   certain caches MAY violate this expectation (for example, when little</td><td> </td><td class="right">   certain caches MAY violate this expectation (for example, when little</td><td class="lineno" valign="top"></td></tr>
    … …  
    828828      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    829829      <tr><td><a name="diff0057" /></td></tr>
    830       <tr><td class="lineno" valign="top"></td><td class="lblock">   Some features of <span class="delete">the HTTP/1.1 protocol,</span> such as Digest</td><td> </td><td class="rblock">   Some features of <span class="insert">HTTP/1.1,</span> such as Digest Authentication, depend on</td><td class="lineno" valign="top"></td></tr>
    831       <tr><td class="lineno" valign="top"></td><td class="lblock">   Authentication, depend on the value of certain end-to-end headers.  A</td><td> </td><td class="rblock">   the value of certain end-to-end headers.  A transparent proxy SHOULD</td><td class="lineno" valign="top"></td></tr>
    832       <tr><td class="lineno" valign="top"></td><td class="lblock">   transparent proxy SHOULD NOT modify an end-to-end header unless the</td><td> </td><td class="rblock">   NOT modify an end-to-end header unless the definition of that header</td><td class="lineno" valign="top"></td></tr>
    833       <tr><td class="lineno" valign="top"></td><td class="lblock">   definition of that header requires or specifically allows that.</td><td> </td><td class="rblock">   requires or specifically allows that.</td><td class="lineno" valign="top"></td></tr>
     830      <tr><td class="lineno" valign="top"></td><td class="lblock">   Some features of <span class="delete">the HTTP/1.1 protocol, such as Digest</span></td><td> </td><td class="rblock">   Some features of <span class="insert">HTTP/1.1, such as Digest Authentication, depend on</span></td><td class="lineno" valign="top"></td></tr>
     831      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Authentication, depend on the value of certain end-to-end headers.  A</span></td><td> </td><td class="rblock">   <span class="insert">the value of certain end-to-end headers.  A transparent proxy SHOULD</span></td><td class="lineno" valign="top"></td></tr>
     832      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">transparent proxy SHOULD NOT modify an end-to-end header unless the</span></td><td> </td><td class="rblock">   <span class="insert">NOT modify an end-to-end header unless the definition of that header</span></td><td class="lineno" valign="top"></td></tr>
     833      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">definition of that header </span>requires or specifically allows that.</td><td> </td><td class="rblock">   requires or specifically allows that.</td><td class="lineno" valign="top"></td></tr>
    834834      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    835835      <tr><td class="lineno" valign="top"></td><td class="left">   A transparent proxy MUST NOT modify any of the following fields in a</td><td> </td><td class="right">   A transparent proxy MUST NOT modify any of the following fields in a</td><td class="lineno" valign="top"></td></tr>
    … …  
    10091009      <tr><td class="lineno" valign="top"></td><td class="left">   We note one exception to this rule: since some applications have</td><td> </td><td class="right">   We note one exception to this rule: since some applications have</td><td class="lineno" valign="top"></td></tr>
    10101010      <tr><td><a name="diff0073" /></td></tr>
    1011       <tr><td class="lineno" valign="top"></td><td class="lblock">   traditionally used <span class="delete">GETs</span> and <span class="delete">HEADs</span> with <span class="delete">query</span> URLs <span class="delete">(those</span> containing a</td><td> </td><td class="rblock">   traditionally used <span class="insert">GET</span> and <span class="insert">HEAD requests</span> with URLs containing a <span class="insert">query</span></td><td class="lineno" valign="top"></td></tr>
    1012       <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">"?" in the rel_path part)</span> to perform operations with significant side</td><td> </td><td class="rblock"><span class="insert">   part</span> to perform operations with significant side effects, caches MUST</td><td class="lineno" valign="top"></td></tr>
    1013       <tr><td class="lineno" valign="top"></td><td class="lblock">   effects, caches MUST NOT treat responses to such URIs as fresh unless</td><td> </td><td class="rblock">   NOT treat responses to such URIs as fresh unless the server provides</td><td class="lineno" valign="top"></td></tr>
    1014       <tr><td class="lineno" valign="top"></td><td class="lblock">   the server provides an explicit expiration time.  This specifically</td><td> </td><td class="rblock">   an explicit expiration time.  This specifically means that responses</td><td class="lineno" valign="top"></td></tr>
    1015       <tr><td class="lineno" valign="top"></td><td class="lblock">   means that responses from HTTP/1.0 servers for such URIs SHOULD NOT</td><td> </td><td class="rblock">   from HTTP/1.0 servers for such URIs SHOULD NOT be taken from a cache.</td><td class="lineno" valign="top"></td></tr>
    1016       <tr><td class="lineno" valign="top"></td><td class="lblock">   be taken from a cache.  See Section 8.1.1 of [Part2] for related</td><td> </td><td class="rblock">   See Section 8.1.1 of [Part2] for related information.</td><td class="lineno" valign="top"></td></tr>
    1017       <tr><td class="lineno" valign="top"></td><td class="lblock">   information.</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1011      <tr><td class="lineno" valign="top"></td><td class="lblock">   traditionally used GET<span class="delete">s and HEADs with query URLs (those containing a</span></td><td> </td><td class="rblock">   traditionally used GET<span class="insert"> and HEAD requests with URLs containing a query</span></td><td class="lineno" valign="top"></td></tr>
     1012      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">"?" in the rel_path part) to perform operations with significant side</span></td><td> </td><td class="rblock">   <span class="insert">part to perform operations with significant side effects, caches MUST</span></td><td class="lineno" valign="top"></td></tr>
     1013      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">effects, caches MUST NOT treat responses to such URIs as fresh unles</span>s</td><td> </td><td class="rblock">   <span class="insert">NOT treat responses to such URIs as fresh unless the server provide</span>s</td><td class="lineno" valign="top"></td></tr>
     1014      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">the server provides an explicit expiration time.  This specifically</span></td><td> </td><td class="rblock">   <span class="insert">an explicit expiration time.  This specifically means that responses</span></td><td class="lineno" valign="top"></td></tr>
     1015      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">means that responses from HTTP/1.0 servers for such URIs SHOULD NOT</span></td><td> </td><td class="rblock">   <span class="insert">from HTTP/1.0 servers for such URIs SHOULD NOT be taken from a cache.</span></td><td class="lineno" valign="top"></td></tr>
     1016      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">be taken from a cache.  See Section 8.1.1 of [Part2] for related</span></td><td> </td><td class="rblock">   <span class="insert">See Section 8.1.1 of [Part2] for related information.</span></td><td class="lineno" valign="top"></td></tr>
     1017      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   information.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    10181018      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    10191019      <tr><td><a name="diff0074" /></td></tr>
    … …  
    10271027      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    10281028      <tr><td><a name="diff0075" /></td></tr>
    1029       <tr><td class="lineno" valign="top"></td><td class="lblock">   There is no way for <span class="delete">the</span> HTTP <span class="delete">protocol</span> to guarantee that all such</td><td> </td><td class="rblock">   There is no way for HTTP to guarantee that all such cache entries are</td><td class="lineno" valign="top"></td></tr>
    1030       <tr><td class="lineno" valign="top"></td><td class="lblock">   cache entries are marked invalid.  For example, the request that</td><td> </td><td class="rblock">   marked invalid.  For example, the request that caused the change at</td><td class="lineno" valign="top"></td></tr>
    1031       <tr><td class="lineno" valign="top"></td><td class="lblock">   caused the change at the origin server might not have gone through</td><td> </td><td class="rblock">   the origin server might not have gone through the proxy where a cache</td><td class="lineno" valign="top"></td></tr>
    1032       <tr><td class="lineno" valign="top"></td><td class="lblock">   the proxy where a cache entry is stored.  However, several rules help</td><td> </td><td class="rblock">   entry is stored.  However, several rules help reduce the likelihood</td><td class="lineno" valign="top"></td></tr>
    1033       <tr><td class="lineno" valign="top"></td><td class="lblock">   reduce the likelihood of erroneous behavior.</td><td> </td><td class="rblock">   of erroneous behavior.</td><td class="lineno" valign="top"></td></tr>
     1029      <tr><td class="lineno" valign="top"></td><td class="lblock">   There is no way for <span class="delete">the HTTP protocol to guarantee that all such</span></td><td> </td><td class="rblock">   There is no way for <span class="insert">HTTP to guarantee that all such cache entries are</span></td><td class="lineno" valign="top"></td></tr>
     1030      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">cache entries are marked invalid.  For example, the request th</span>at</td><td> </td><td class="rblock">   <span class="insert">marked invalid.  For example, the request that caused the change </span>at</td><td class="lineno" valign="top"></td></tr>
     1031      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">caused the change at the origin server might not have gone through</span></td><td> </td><td class="rblock">   <span class="insert">the origin server might not have gone through the proxy where a cache</span></td><td class="lineno" valign="top"></td></tr>
     1032      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">the proxy where a cache entry is stored.  However, several rules help</span></td><td> </td><td class="rblock">   <span class="insert">entry is stored.  However, several rules help reduce the likelihood</span></td><td class="lineno" valign="top"></td></tr>
     1033      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">reduce the likelihood </span>of erroneous behavior.</td><td> </td><td class="rblock">   of erroneous behavior.</td><td class="lineno" valign="top"></td></tr>
    10341034      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    10351035      <tr><td class="lineno" valign="top"></td><td class="left">   In this section, the phrase "invalidate an entity" means that the</td><td> </td><td class="right">   In this section, the phrase "invalidate an entity" means that the</td><td class="lineno" valign="top"></td></tr>
    … …  
    11761176      <tr><td class="lineno" valign="top"></td><td class="left">    cache-request-directive =</td><td> </td><td class="right">    cache-request-directive =</td><td class="lineno" valign="top"></td></tr>
    11771177      <tr><td><a name="diff0086" /></td></tr>
    1178       <tr><td class="lineno" valign="top"></td><td class="lblock">           "no-cache"                          ; Section <span class="delete">15.2.1</span></td><td> </td><td class="rblock">           "no-cache"                          ; Section <span class="insert">16.2.1</span></td><td class="lineno" valign="top"></td></tr>
    1179       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "no-store"                          ; Section <span class="delete">15.2.2</span></td><td> </td><td class="rblock">         | "no-store"                          ; Section <span class="insert">16.2.2</span></td><td class="lineno" valign="top"></td></tr>
    1180       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "max-age" "=" delta-seconds         ; Section <span class="delete">15.2.3, 15.2.4</span></td><td> </td><td class="rblock">         | "max-age" "=" delta-seconds         ; Section <span class="insert">16.2.3, 16.2.4</span></td><td class="lineno" valign="top"></td></tr>
    1181       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "max-stale" [ "=" delta-seconds ]   ; Section <span class="delete">15.2.3</span></td><td> </td><td class="rblock">         | "max-stale" [ "=" delta-seconds ]   ; Section <span class="insert">16.2.3</span></td><td class="lineno" valign="top"></td></tr>
    1182       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "min-fresh" "=" delta-seconds       ; Section <span class="delete">15.2.3</span></td><td> </td><td class="rblock">         | "min-fresh" "=" delta-seconds       ; Section <span class="insert">16.2.3</span></td><td class="lineno" valign="top"></td></tr>
    1183       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "no-transform"                      ; Section <span class="delete">15.2.5</span></td><td> </td><td class="rblock">         | "no-transform"                      ; Section <span class="insert">16.2.5</span></td><td class="lineno" valign="top"></td></tr>
    1184       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "only-if-cached"                    ; Section <span class="delete">15.2.4</span></td><td> </td><td class="rblock">         | "only-if-cached"                    ; Section <span class="insert">16.2.4</span></td><td class="lineno" valign="top"></td></tr>
    1185       <tr><td class="lineno" valign="top"></td><td class="lblock">         | cache-extension                     ; Section <span class="delete">15.2.6</span></td><td> </td><td class="rblock">         | cache-extension                     ; Section <span class="insert">16.2.6</span></td><td class="lineno" valign="top"></td></tr>
     1178      <tr><td class="lineno" valign="top"></td><td class="lblock">          <span class="delete"> "no-cache"                          ; Section 15</span>.2.1</td><td> </td><td class="rblock">          <span class="insert">"no-cache"                          ; Section 16</span>.2.1</td><td class="lineno" valign="top"></td></tr>
     1179      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "no-store"                          ; Section 15</span>.2.2</td><td> </td><td class="rblock">        <span class="insert">| "no-store"                          ; Section 16</span>.2.2</td><td class="lineno" valign="top"></td></tr>
     1180      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "max-age" "=" delta-seconds         ; Section 15.2.3, 15</span>.2.4</td><td> </td><td class="rblock">        <span class="insert">| "max-age" "=" delta-seconds         ; Section 16.2.3, 16</span>.2.4</td><td class="lineno" valign="top"></td></tr>
     1181      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "max-stale" [ "=" delta-seconds ]   ; Section 15</span>.2.3</td><td> </td><td class="rblock">        <span class="insert">| "max-stale" [ "=" delta-seconds ]   ; Section 16</span>.2.3</td><td class="lineno" valign="top"></td></tr>
     1182      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "min-fresh" "=" delta-seconds       ; Section 15</span>.2.3</td><td> </td><td class="rblock">        <span class="insert">| "min-fresh" "=" delta-seconds       ; Section 16</span>.2.3</td><td class="lineno" valign="top"></td></tr>
     1183      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "no-transform"                      ; Section 15</span>.2.5</td><td> </td><td class="rblock">        <span class="insert">| "no-transform"                      ; Section 16</span>.2.5</td><td class="lineno" valign="top"></td></tr>
     1184      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "only-if-cached"                    ; Section 15</span>.2.4</td><td> </td><td class="rblock">        <span class="insert">| "only-if-cached"                    ; Section 16</span>.2.4</td><td class="lineno" valign="top"></td></tr>
     1185      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | cache-extension                     ; Section 15</span>.2.6</td><td> </td><td class="rblock">        <span class="insert">| cache-extension                     ; Section 16</span>.2.6</td><td class="lineno" valign="top"></td></tr>
    11861186      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    11871187      <tr><td class="lineno" valign="top"></td><td class="left">    cache-response-directive =</td><td> </td><td class="right">    cache-response-directive =</td><td class="lineno" valign="top"></td></tr>
    11881188      <tr><td><a name="diff0087" /></td></tr>
    1189       <tr><td class="lineno" valign="top"></td><td class="lblock">           "public"                               ; Section <span class="delete">15.2.1</span></td><td> </td><td class="rblock">           "public"                               ; Section <span class="insert">16.2.1</span></td><td class="lineno" valign="top"></td></tr>
    1190       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "private" [ "=" DQUOTE 1#field-name DQUOTE ] ; Section <span class="delete">15.2.1</span></td><td> </td><td class="rblock">         | "private" [ "=" DQUOTE 1#field-name DQUOTE ] ; Section <span class="insert">16.2.1</span></td><td class="lineno" valign="top"></td></tr>
    1191       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "no-cache" [ "=" DQUOTE 1#field-name DQUOTE ]; Section <span class="delete">15.2.1</span></td><td> </td><td class="rblock">         | "no-cache" [ "=" DQUOTE 1#field-name DQUOTE ]; Section <span class="insert">16.2.1</span></td><td class="lineno" valign="top"></td></tr>
    1192       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "no-store"                             ; Section <span class="delete">15.2.2</span></td><td> </td><td class="rblock">         | "no-store"                             ; Section <span class="insert">16.2.2</span></td><td class="lineno" valign="top"></td></tr>
    1193       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "no-transform"                         ; Section <span class="delete">15.2.5</span></td><td> </td><td class="rblock">         | "no-transform"                         ; Section <span class="insert">16.2.5</span></td><td class="lineno" valign="top"></td></tr>
    1194       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "must-revalidate"                      ; Section <span class="delete">15.2.4</span></td><td> </td><td class="rblock">         | "must-revalidate"                      ; Section <span class="insert">16.2.4</span></td><td class="lineno" valign="top"></td></tr>
    1195       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "proxy-revalidate"                     ; Section <span class="delete">15.2.4</span></td><td> </td><td class="rblock">         | "proxy-revalidate"                     ; Section <span class="insert">16.2.4</span></td><td class="lineno" valign="top"></td></tr>
    1196       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "max-age" "=" delta-seconds            ; Section <span class="delete">15.2.3</span></td><td> </td><td class="rblock">         | "max-age" "=" delta-seconds            ; Section <span class="insert">16.2.3</span></td><td class="lineno" valign="top"></td></tr>
    1197       <tr><td class="lineno" valign="top"></td><td class="lblock">         | "s-maxage" "=" delta-seconds           ; Section <span class="delete">15.2.3</span></td><td> </td><td class="rblock">         | "s-maxage" "=" delta-seconds           ; Section <span class="insert">16.2.3</span></td><td class="lineno" valign="top"></td></tr>
    1198       <tr><td class="lineno" valign="top"></td><td class="lblock">         | cache-extension                        ; Section <span class="delete">15.2.6</span></td><td> </td><td class="rblock">         | cache-extension                        ; Section <span class="insert">16.2.6</span></td><td class="lineno" valign="top"></td></tr>
     1189      <tr><td class="lineno" valign="top"></td><td class="lblock">          <span class="delete"> "public"                               ; Section 15</span>.2.1</td><td> </td><td class="rblock">          <span class="insert">"public"                               ; Section 16</span>.2.1</td><td class="lineno" valign="top"></td></tr>
     1190      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "private" [ "=" DQUOTE 1#field-name DQUOTE ] ; Section 15</span>.2.1</td><td> </td><td class="rblock">        <span class="insert">| "private" [ "=" DQUOTE 1#field-name DQUOTE ] ; Section 16</span>.2.1</td><td class="lineno" valign="top"></td></tr>
     1191      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "no-cache" [ "=" DQUOTE 1#field-name DQUOTE ]; Section 15</span>.2.1</td><td> </td><td class="rblock">        <span class="insert">| "no-cache" [ "=" DQUOTE 1#field-name DQUOTE ] ; Section 16</span>.2.1</td><td class="lineno" valign="top"></td></tr>
     1192      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "no-store"                             ; Section 15</span>.2.2</td><td> </td><td class="rblock">        <span class="insert">| "no-store"                             ; Section 16</span>.2.2</td><td class="lineno" valign="top"></td></tr>
     1193      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "no-transform"                         ; Section 15</span>.2.5</td><td> </td><td class="rblock">        <span class="insert">| "no-transform"                         ; Section 16</span>.2.5</td><td class="lineno" valign="top"></td></tr>
     1194      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "must-revalidate"                      ; Section 15</span>.2.4</td><td> </td><td class="rblock">        <span class="insert">| "must-revalidate"                      ; Section 16</span>.2.4</td><td class="lineno" valign="top"></td></tr>
     1195      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "proxy-revalidate"                     ; Section 15</span>.2.4</td><td> </td><td class="rblock">        <span class="insert">| "proxy-revalidate"                     ; Section 16</span>.2.4</td><td class="lineno" valign="top"></td></tr>
     1196      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "max-age" "=" delta-seconds            ; Section 15</span>.2.3</td><td> </td><td class="rblock">        <span class="insert">| "max-age" "=" delta-seconds            ; Section 16</span>.2.3</td><td class="lineno" valign="top"></td></tr>
     1197      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | "s-maxage" "=" delta-seconds           ; Section 15</span>.2.3</td><td> </td><td class="rblock">        <span class="insert">| "s-maxage" "=" delta-seconds           ; Section 16</span>.2.3</td><td class="lineno" valign="top"></td></tr>
     1198      <tr><td class="lineno" valign="top"></td><td class="lblock">        <span class="delete"> | cache-extension                        ; Section 15</span>.2.6</td><td> </td><td class="rblock">        <span class="insert">| cache-extension                        ; Section 16</span>.2.6</td><td class="lineno" valign="top"></td></tr>
    11991199      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    12001200      <tr><td class="lineno" valign="top"></td><td class="left">    cache-extension = token [ "=" ( token | quoted-string ) ]</td><td> </td><td class="right">    cache-extension = token [ "=" ( token | quoted-string ) ]</td><td class="lineno" valign="top"></td></tr>
    … …  
    12061206      <tr><td class="lineno" valign="top"></td><td class="left">   response.  This mechanism supports extensibility; implementations of</td><td> </td><td class="right">   response.  This mechanism supports extensibility; implementations of</td><td class="lineno" valign="top"></td></tr>
    12071207      <tr><td><a name="diff0088" /></td></tr>
    1208       <tr><td class="lineno" valign="top"></td><td class="lblock">   future versions of <span class="delete">the</span> HTTP <span class="delete">protocol</span> might apply these directives to</td><td> </td><td class="rblock">   future versions of HTTP might apply these directives to header fields</td><td class="lineno" valign="top"></td></tr>
    1209       <tr><td class="lineno" valign="top"></td><td class="lblock">   header fields not defined in HTTP/1.1.</td><td> </td><td class="rblock">   not defined in HTTP/1.1.</td><td class="lineno" valign="top"></td></tr>
     1208      <tr><td class="lineno" valign="top"></td><td class="lblock">   future versions of <span class="delete">the HTTP protocol might apply these directives to</span></td><td> </td><td class="rblock">   future versions of <span class="insert">HTTP might apply these directives to header fields</span></td><td class="lineno" valign="top"></td></tr>
     1209      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">header fields </span>not defined in HTTP/1.1.</td><td> </td><td class="rblock">   not defined in HTTP/1.1.</td><td class="lineno" valign="top"></td></tr>
    12101210      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    12111211      <tr><td class="lineno" valign="top"></td><td class="left">   The cache-control directives can be broken down into these general</td><td> </td><td class="right">   The cache-control directives can be broken down into these general</td><td class="lineno" valign="top"></td></tr>
    … …  
    16591659      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections,</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 1: URIs, Connections,</td><td class="lineno" valign="top"></td></tr>
    16601660      <tr><td><a name="diff0120" /></td></tr>
    1661       <tr><td class="lineno" valign="top"></td><td class="lblock">              and Message Parsing", <span class="delete">draft-ietf-httpbis-p1-messaging-01</span></td><td> </td><td class="rblock">              and Message Parsing", <span class="insert">draft-ietf-httpbis-p1-messaging-02</span></td><td class="lineno" valign="top"></td></tr>
    1662       <tr><td class="lineno" valign="top"></td><td class="lblock">              (work in progress), <span class="delete">January</span> 2008.</td><td> </td><td class="rblock">              (work in progress), <span class="insert">February</span> 2008.</td><td class="lineno" valign="top"></td></tr>
     1661      <tr><td class="lineno" valign="top"></td><td class="lblock">              and Message Parsing", draft-ietf-httpbis-p1-messaging-0<span class="delete">1</span></td><td> </td><td class="rblock">              and Message Parsing", draft-ietf-httpbis-p1-messaging-0<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
     1662      <tr><td class="lineno" valign="top"></td><td class="lblock">              (work in progress), <span class="delete">Jan</span>uary 2008.</td><td> </td><td class="rblock">              (work in progress), <span class="insert">Febr</span>uary 2008.</td><td class="lineno" valign="top"></td></tr>
    16631663      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    16641664      <tr><td class="lineno" valign="top"></td><td class="left">   [Part2]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part2]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
    … …  
    16661666      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 2: Message</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 2: Message</td><td class="lineno" valign="top"></td></tr>
    16671667      <tr><td><a name="diff0121" /></td></tr>
    1668       <tr><td class="lineno" valign="top"></td><td class="lblock">              Semantics", <span class="delete">draft-ietf-httpbis-p2-semantics-01</span> (work in</td><td> </td><td class="rblock">              Semantics", <span class="insert">draft-ietf-httpbis-p2-semantics-02</span> (work in</td><td class="lineno" valign="top"></td></tr>
    1669       <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">January</span> 2008.</td><td> </td><td class="rblock">              progress), <span class="insert">February</span> 2008.</td><td class="lineno" valign="top"></td></tr>
     1668      <tr><td class="lineno" valign="top"></td><td class="lblock">              Semantics", draft-ietf-httpbis-p2-semantics-0<span class="delete">1</span> (work in</td><td> </td><td class="rblock">              Semantics", draft-ietf-httpbis-p2-semantics-0<span class="insert">2</span> (work in</td><td class="lineno" valign="top"></td></tr>
     1669      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">Jan</span>uary 2008.</td><td> </td><td class="rblock">              progress), <span class="insert">Febr</span>uary 2008.</td><td class="lineno" valign="top"></td></tr>
    16701670      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    16711671      <tr><td class="lineno" valign="top"></td><td class="left">   [Part3]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part3]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
    … …  
    16731673      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 3: Message Payload</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 3: Message Payload</td><td class="lineno" valign="top"></td></tr>
    16741674      <tr><td><a name="diff0122" /></td></tr>
    1675       <tr><td class="lineno" valign="top"></td><td class="lblock">              and Content Negotiation", <span class="delete">draft-ietf-httpbis-p3-payload-01</span></td><td> </td><td class="rblock">              and Content Negotiation", <span class="insert">draft-ietf-httpbis-p3-payload-02</span></td><td class="lineno" valign="top"></td></tr>
    1676       <tr><td class="lineno" valign="top"></td><td class="lblock">              (work in progress), <span class="delete">January</span> 2008.</td><td> </td><td class="rblock">              (work in progress), <span class="insert">February</span> 2008.</td><td class="lineno" valign="top"></td></tr>
     1675      <tr><td class="lineno" valign="top"></td><td class="lblock">              and Content Negotiation", draft-ietf-httpbis-p3-payload-0<span class="delete">1</span></td><td> </td><td class="rblock">              and Content Negotiation", draft-ietf-httpbis-p3-payload-0<span class="insert">2</span></td><td class="lineno" valign="top"></td></tr>
     1676      <tr><td class="lineno" valign="top"></td><td class="lblock">              (work in progress), <span class="delete">Jan</span>uary 2008.</td><td> </td><td class="rblock">              (work in progress), <span class="insert">Febr</span>uary 2008.</td><td class="lineno" valign="top"></td></tr>
    16771677      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    16781678      <tr><td class="lineno" valign="top"></td><td class="left">   [Part4]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part4]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
    … …  
    16801680      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 4: Conditional</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 4: Conditional</td><td class="lineno" valign="top"></td></tr>
    16811681      <tr><td><a name="diff0123" /></td></tr>
    1682       <tr><td class="lineno" valign="top"></td><td class="lblock">              Requests", <span class="delete">draft-ietf-httpbis-p4-conditional-01</span> (work in</td><td> </td><td class="rblock">              Requests", <span class="insert">draft-ietf-httpbis-p4-conditional-02</span> (work in</td><td class="lineno" valign="top"></td></tr>
    1683       <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">January</span> 2008.</td><td> </td><td class="rblock">              progress), <span class="insert">February</span> 2008.</td><td class="lineno" valign="top"></td></tr>
     1682      <tr><td class="lineno" valign="top"></td><td class="lblock">              Requests", draft-ietf-httpbis-p4-conditional-0<span class="delete">1</span> (work in</td><td> </td><td class="rblock">              Requests", draft-ietf-httpbis-p4-conditional-0<span class="insert">2</span> (work in</td><td class="lineno" valign="top"></td></tr>
     1683      <tr><td class="lineno" valign="top"></td><td class="lblock">              progress), <span class="delete">Jan</span>uary 2008.</td><td> </td><td class="rblock">              progress), <span class="insert">Febr</span>uary 2008.</td><td class="lineno" valign="top"></td></tr>
    16841684      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    16851685      <tr><td class="lineno" valign="top"></td><td class="left">   [Part5]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part5]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
    … …  
    16871687      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 5: Range Requests and</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 5: Range Requests and</td><td class="lineno" valign="top"></td></tr>
    16881688      <tr><td><a name="diff0124" /></td></tr>
    1689       <tr><td class="lineno" valign="top"></td><td class="lblock">              Partial Responses", <span class="delete">draft-ietf-httpbis-p5-range-01</span> (work</td><td> </td><td class="rblock">              Partial Responses", <span class="insert">draft-ietf-httpbis-p5-range-02</span> (work</td><td class="lineno" valign="top"></td></tr>
    1690       <tr><td class="lineno" valign="top"></td><td class="lblock">              in progress), <span class="delete">January</span> 2008.</td><td> </td><td class="rblock">              in progress), <span class="insert">February</span> 2008.</td><td class="lineno" valign="top"></td></tr>
     1689      <tr><td class="lineno" valign="top"></td><td class="lblock">              Partial Responses", draft-ietf-httpbis-p5-range-0<span class="delete">1</span> (work</td><td> </td><td class="rblock">              Partial Responses", draft-ietf-httpbis-p5-range-0<span class="insert">2</span> (work</td><td class="lineno" valign="top"></td></tr>
     1690      <tr><td class="lineno" valign="top"></td><td class="lblock">              in progress), <span class="delete">Jan</span>uary 2008.</td><td> </td><td class="rblock">              in progress), <span class="insert">Febr</span>uary 2008.</td><td class="lineno" valign="top"></td></tr>
    16911691      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    16921692      <tr><td class="lineno" valign="top"></td><td class="left">   [Part7]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [Part7]    Fielding, R., Ed., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
    … …  
    16941694      <tr><td class="lineno" valign="top"></td><td class="left">              and J. Reschke, Ed., "HTTP/1.1, part 7: Authentication",</td><td> </td><td class="right">              and J. Reschke, Ed., "HTTP/1.1, part 7: Authentication",</td><td class="lineno" valign="top"></td></tr>
    16951695      <tr><td><a name="diff0125" /></td></tr>
    1696       <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p7-auth-01</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p7-auth-02</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
    1697       <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">January</span> 2008.</td><td> </td><td class="rblock">              <span class="insert">February</span> 2008.</td><td class="lineno" valign="top"></td></tr>
     1696      <tr><td class="lineno" valign="top"></td><td class="lblock">              draft-ietf-httpbis-p7-auth-0<span class="delete">1</span> (work in progress),</td><td> </td><td class="rblock">              draft-ietf-httpbis-p7-auth-0<span class="insert">2</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
     1697      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">Jan</span>uary 2008.</td><td> </td><td class="rblock">              <span class="insert">Febr</span>uary 2008.</td><td class="lineno" valign="top"></td></tr>
    16981698      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    16991699      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2047]  Moore, K., "MIME (Multipurpose Internet Mail Extensions)</td><td> </td><td class="right">   [RFC2047]  Moore, K., "MIME (Multipurpose Internet Mail Extensions)</td><td class="lineno" valign="top"></td></tr>
    … …  
    17771777      <tr><td><a name="diff0134" /></td></tr>
    17781778      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">B.3.  Since draft-ietf-httpbis-p6-cache-01</span></td><td class="lineno" valign="top"></td></tr>
    1779       <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>
     1779      <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>
    17801780      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Closed issues:</span></td><td class="lineno" valign="top"></td></tr>
    1781       <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>
     1781      <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>
    17821782      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  &lt;http://www3.tools.ietf.org/wg/httpbis/trac/ticket/82&gt;: "rel_path</span></td><td class="lineno" valign="top"></td></tr>
    17831783      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      not used"</span></td><td class="lineno" valign="top"></td></tr>
    17841784      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Other changes:</span></td><td class="lineno" valign="top"></td></tr>
    1785       <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>
     1785      <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>
    17861786      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  Get rid of duplicate BNF rule names ("host" -&gt; "uri-host") (work</span></td><td class="lineno" valign="top"></td></tr>
    17871787      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      in progress on</span></td><td class="lineno" valign="top"></td></tr>
    17881788      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      &lt;http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36&gt;)</span></td><td class="lineno" valign="top"></td></tr>
    1789       <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>
     1789      <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>
    17901790      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  Add explicit references to BNF syntax and rules imported from</span></td><td class="lineno" valign="top"></td></tr>
    17911791      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      other parts of the specification.</span></td><td class="lineno" valign="top"></td></tr>
    1792       <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
     1792      <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>
    17931793      <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>
    17941794      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18041804      <tr><td class="lineno" valign="top"></td><td class="left">         max-age  33</td><td> </td><td class="right">         max-age  33</td><td class="lineno" valign="top"></td></tr>
    18051805      <tr><td><a name="diff0136" /></td></tr>
    1806       <tr><td class="lineno" valign="top"></td><td class="lblock">         <span class="delete">max-age  34</span></td><td> </td><td class="rblock">         max-stale  <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
    1807       <tr><td class="lineno" valign="top"></td><td class="lblock">         max-stale  <span class="delete">33</span></td><td> </td><td class="rblock">         min-fresh  <span class="insert">32</span></td><td class="lineno" valign="top"></td></tr>
    1808       <tr><td class="lineno" valign="top"></td><td class="lblock">         min-fresh  <span class="delete">33</span></td><td> </td><td class="rblock">         must-revalidate  <span class="insert">34</span></td><td class="lineno" valign="top"></td></tr>
    1809       <tr><td class="lineno" valign="top"></td><td class="lblock">         must-revalidate  <span class="delete">35</span></td><td> </td><td class="rblock">         no-cache  <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
    1810       <tr><td class="lineno" valign="top"></td><td class="lblock">         no-cache  <span class="delete">30</span></td><td> </td><td class="rblock">         no-store  <span class="insert">30</span></td><td class="lineno" valign="top"></td></tr>
    1811       <tr><td class="lineno" valign="top"></td><td class="lblock">         no-store  <span class="delete">31</span></td><td> </td><td class="rblock">         no-transform  35</td><td class="lineno" valign="top"></td></tr>
    1812       <tr><td class="lineno" valign="top"></td><td class="lblock">         no-transform  <span class="delete">36</span></td><td> </td><td class="rblock">         <span class="insert">only-if-cached  34</span></td><td class="lineno" valign="top"></td></tr>
    1813       <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         only-if-cached</span>  35</td><td> </td><td class="rblock">         private  <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
    1814       <tr><td class="lineno" valign="top"></td><td class="lblock">         private  <span class="delete">30</span></td><td> </td><td class="rblock">         proxy-revalidate  <span class="insert">35</span></td><td class="lineno" valign="top"></td></tr>
    1815       <tr><td class="lineno" valign="top"></td><td class="lblock">         proxy-revalidate  <span class="delete">36</span></td><td> </td><td class="rblock">         public  <span class="insert">29</span></td><td class="lineno" valign="top"></td></tr>
    1816       <tr><td class="lineno" valign="top"></td><td class="lblock">         public  <span class="delete">30</span></td><td> </td><td class="rblock">         s-maxage  <span class="insert">31</span></td><td class="lineno" valign="top"></td></tr>
    1817       <tr><td class="lineno" valign="top"></td><td class="lblock">         s-maxage  <span class="delete">32</span></td><td> </td><td class="rblock">      Cache-Control header  <span class="insert">27</span></td><td class="lineno" valign="top"></td></tr>
    1818       <tr><td class="lineno" valign="top"></td><td class="lblock">      Cache-Control header  <span class="delete">28</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
     1806      <tr><td class="lineno" valign="top"></td><td class="lblock">         max-<span class="delete">age  34</span></td><td> </td><td class="rblock">         max-<span class="insert">stale  32</span></td><td class="lineno" valign="top"></td></tr>
     1807      <tr><td class="lineno" valign="top"></td><td class="lblock">         m<span class="delete">ax-stale  33</span></td><td> </td><td class="rblock">         m<span class="insert">in-fresh  32</span></td><td class="lineno" valign="top"></td></tr>
     1808      <tr><td class="lineno" valign="top"></td><td class="lblock">         m<span class="delete">in-fresh  33</span></td><td> </td><td class="rblock">         m<span class="insert">ust-revalidate  34</span></td><td class="lineno" valign="top"></td></tr>
     1809      <tr><td class="lineno" valign="top"></td><td class="lblock">         <span class="delete">must-revalidate  35</span></td><td> </td><td class="rblock">         <span class="insert">no-cache  29</span></td><td class="lineno" valign="top"></td></tr>
     1810      <tr><td class="lineno" valign="top"></td><td class="lblock">         no-<span class="delete">cach</span>e  30</td><td> </td><td class="rblock">         no-<span class="insert">stor</span>e  30</td><td class="lineno" valign="top"></td></tr>
     1811      <tr><td class="lineno" valign="top"></td><td class="lblock">         no-<span class="delete">store  31</span></td><td> </td><td class="rblock">         no-<span class="insert">transform  35</span></td><td class="lineno" valign="top"></td></tr>
     1812      <tr><td class="lineno" valign="top"></td><td class="lblock">         <span class="delete">no-transform  36</span></td><td> </td><td class="rblock">         <span class="insert">only-if-cached  34</span></td><td class="lineno" valign="top"></td></tr>
     1813      <tr><td class="lineno" valign="top"></td><td class="lblock">         <span class="delete">only-if-cached  35</span></td><td> </td><td class="rblock">         <span class="insert">private  29</span></td><td class="lineno" valign="top"></td></tr>
     1814      <tr><td class="lineno" valign="top"></td><td class="lblock">         pr<span class="delete">ivate  30</span></td><td> </td><td class="rblock">         pr<span class="insert">oxy-revalidate  35</span></td><td class="lineno" valign="top"></td></tr>
     1815      <tr><td class="lineno" valign="top"></td><td class="lblock">         p<span class="delete">roxy-revalidate  36</span></td><td> </td><td class="rblock">         p<span class="insert">ublic  29</span></td><td class="lineno" valign="top"></td></tr>
     1816      <tr><td class="lineno" valign="top"></td><td class="lblock">         <span class="delete">public  30</span></td><td> </td><td class="rblock">         <span class="insert">s-maxage  31</span></td><td class="lineno" valign="top"></td></tr>
     1817      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">   s-maxage  32</span></td><td> </td><td class="rblock">      <span class="insert">Cache-Control header  27</span></td><td class="lineno" valign="top"></td></tr>
     1818      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Cache-Control header  28</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
    18191819      <tr><td class="lineno" valign="top"></td><td class="left">      cacheable  6</td><td> </td><td class="right">      cacheable  6</td><td class="lineno" valign="top"></td></tr>
    18201820      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
    … …  
    18341834      <tr><td class="lineno" valign="top"></td><td class="left">         age-value  27</td><td> </td><td class="right">         age-value  27</td><td class="lineno" valign="top"></td></tr>
    18351835      <tr><td><a name="diff0138" /></td></tr>
    1836       <tr><td class="lineno" valign="top"></td><td class="lblock">         Cache-Control  <span class="delete">29</span></td><td> </td><td class="rblock">         Cache-Control  <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
    1837       <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-directive  <span class="delete">29</span></td><td> </td><td class="rblock">         cache-directive  <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
    1838       <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-extension  <span class="delete">29</span></td><td> </td><td class="rblock">         cache-extension  <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
    1839       <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-request-directive  <span class="delete">29</span></td><td> </td><td class="rblock">         cache-request-directive  <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
    1840       <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-response-directive  <span class="delete">29</span></td><td> </td><td class="rblock">         cache-response-directive  <span class="insert">28</span></td><td class="lineno" valign="top"></td></tr>
     1836      <tr><td class="lineno" valign="top"></td><td class="lblock">         Cache-Control  2<span class="delete">9</span></td><td> </td><td class="rblock">         Cache-Control  2<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1837      <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-directive  2<span class="delete">9</span></td><td> </td><td class="rblock">         cache-directive  2<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1838      <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-extension  2<span class="delete">9</span></td><td> </td><td class="rblock">         cache-extension  2<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1839      <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-request-directive  2<span class="delete">9</span></td><td> </td><td class="rblock">         cache-request-directive  2<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1840      <tr><td class="lineno" valign="top"></td><td class="lblock">         cache-response-directive  2<span class="delete">9</span></td><td> </td><td class="rblock">         cache-response-directive  2<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
    18411841      <tr><td class="lineno" valign="top"></td><td class="left">         delta-seconds  27</td><td> </td><td class="right">         delta-seconds  27</td><td class="lineno" valign="top"></td></tr>
    18421842      <tr><td><a name="diff0139" /></td></tr>
    1843       <tr><td class="lineno" valign="top"></td><td class="lblock">         Expires  <span class="delete">38</span></td><td> </td><td class="rblock">         Expires  <span class="insert">37</span></td><td class="lineno" valign="top"></td></tr>
    1844       <tr><td class="lineno" valign="top"></td><td class="lblock">         extension-pragma  <span class="delete">39</span></td><td> </td><td class="rblock">         extension-pragma  <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
    1845       <tr><td class="lineno" valign="top"></td><td class="lblock">         Pragma  <span class="delete">39</span></td><td> </td><td class="rblock">         Pragma  <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
    1846       <tr><td class="lineno" valign="top"></td><td class="lblock">         pragma-directive  <span class="delete">39</span></td><td> </td><td class="rblock">         pragma-directive  <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
    1847       <tr><td class="lineno" valign="top"></td><td class="lblock">         Vary  <span class="delete">39</span></td><td> </td><td class="rblock">         Vary  <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
     1843      <tr><td class="lineno" valign="top"></td><td class="lblock">         Expires  3<span class="delete">8</span></td><td> </td><td class="rblock">         Expires  3<span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
     1844      <tr><td class="lineno" valign="top"></td><td class="lblock">         extension-pragma  3<span class="delete">9</span></td><td> </td><td class="rblock">         extension-pragma  3<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1845      <tr><td class="lineno" valign="top"></td><td class="lblock">         Pragma  3<span class="delete">9</span></td><td> </td><td class="rblock">         Pragma  3<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1846      <tr><td class="lineno" valign="top"></td><td class="lblock">         pragma-directive  3<span class="delete">9</span></td><td> </td><td class="rblock">         pragma-directive  3<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
     1847      <tr><td class="lineno" valign="top"></td><td class="lblock">         Vary  3<span class="delete">9</span></td><td> </td><td class="rblock">         Vary  3<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
    18481848      <tr><td class="lineno" valign="top"></td><td class="left">         warn-agent  40</td><td> </td><td class="right">         warn-agent  40</td><td class="lineno" valign="top"></td></tr>
    18491849      <tr><td class="lineno" valign="top"></td><td class="left">         warn-code  40</td><td> </td><td class="right">         warn-code  40</td><td class="lineno" valign="top"></td></tr>
    … …  
    18611861      <tr><td class="lineno" valign="top"></td><td class="left">         Pragma  38</td><td> </td><td class="right">         Pragma  38</td><td class="lineno" valign="top"></td></tr>
    18621862      <tr><td><a name="diff0141" /></td></tr>
    1863       <tr><td class="lineno" valign="top"></td><td class="lblock">         Vary  <span class="delete">39</span></td><td> </td><td class="rblock">         Vary  <span class="insert">38</span></td><td class="lineno" valign="top"></td></tr>
     1863      <tr><td class="lineno" valign="top"></td><td class="lblock">         Vary  3<span class="delete">9</span></td><td> </td><td class="rblock">         Vary  3<span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
    18641864      <tr><td class="lineno" valign="top"></td><td class="lblock">         Warning  <span class="delete">40</span></td><td> </td><td class="rblock">         Warning  <span class="insert">39</span></td><td class="lineno" valign="top"></td></tr>
    18651865      <tr><td class="lineno" valign="top"></td><td class="left">      heuristic expiration time  7</td><td> </td><td class="right">      heuristic expiration time  7</td><td class="lineno" valign="top"></td></tr>
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