Ignore:
Timestamp:
Sep 3, 2012, 4:03:33 PM (7 years ago)
Author:
fielding@…
Message:

(editorial) move Vary to p2 because it is generated by origin servers and not limited to caching

File:
1 edited

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  • draft-ietf-httpbis/latest/p4-conditional.html

    r1845 r1860  
    449449  }
    450450  @bottom-center {
    451        content: "Expires March 5, 2013";
     451       content: "Expires March 7, 2013";
    452452  }
    453453  @bottom-right {
     
    492492      <meta name="dct.creator" content="Reschke, J. F.">
    493493      <meta name="dct.identifier" content="urn:ietf:id:draft-ietf-httpbis-p4-conditional-latest">
    494       <meta name="dct.issued" scheme="ISO8601" content="2012-09-01">
     494      <meta name="dct.issued" scheme="ISO8601" content="2012-09-03">
    495495      <meta name="dct.replaces" content="urn:ietf:rfc:2616">
    496496      <meta name="dct.abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypertext information systems. This document defines HTTP/1.1 conditional requests, including metadata header fields for indicating state changes, request header fields for making preconditions on such state, and rules for constructing the responses to a conditional request when one or more preconditions evaluate to false.">
     
    518518            </tr>
    519519            <tr>
    520                <td class="left">Expires: March 5, 2013</td>
     520               <td class="left">Expires: March 7, 2013</td>
    521521               <td class="right">J. Reschke, Editor</td>
    522522            </tr>
     
    527527            <tr>
    528528               <td class="left"></td>
    529                <td class="right">September 1, 2012</td>
     529               <td class="right">September 3, 2012</td>
    530530            </tr>
    531531         </tbody>
     
    554554         in progress”.
    555555      </p>
    556       <p>This Internet-Draft will expire on March 5, 2013.</p>
     556      <p>This Internet-Draft will expire on March 7, 2013.</p>
    557557      <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1>
    558558      <p>Copyright © 2012 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
     
    884884      </div>
    885885      <h3 id="rfc.section.2.3.3"><a href="#rfc.section.2.3.3">2.3.3</a>&nbsp;<a id="example.entity.tag.vs.conneg" href="#example.entity.tag.vs.conneg">Example: Entity-tags varying on Content-Negotiated Resources</a></h3>
    886       <p id="rfc.section.2.3.3.p.1">Consider a resource that is subject to content negotiation (<a href="p2-semantics.html#content.negotiation" title="Content Negotiation">Section 9</a> of <a href="#Part2" id="rfc.xref.Part2.2"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>), and where the representations returned upon a GET request vary based on the <a href="p2-semantics.html#header.accept-encoding" class="smpl">Accept-Encoding</a> request header field (<a href="p2-semantics.html#header.accept-encoding" title="Accept-Encoding">Section 10.3</a> of <a href="#Part2" id="rfc.xref.Part2.3"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>):
     886      <p id="rfc.section.2.3.3.p.1">Consider a resource that is subject to content negotiation (<a href="p2-semantics.html#content.negotiation" title="Content Negotiation">Section 3.5</a> of <a href="#Part2" id="rfc.xref.Part2.2"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>), and where the representations returned upon a GET request vary based on the <a href="p2-semantics.html#header.accept-encoding" class="smpl">Accept-Encoding</a> request header field (<a href="p2-semantics.html#header.accept-encoding" title="Accept-Encoding">Section 6.3.4</a> of <a href="#Part2" id="rfc.xref.Part2.3"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>):
    887887      </p>
    888888      <div id="rfc.figure.u.5"></div>
     
    10931093         as if it were the payload of a 200 response. The 304 response <em class="bcp14">MUST NOT</em> contain a message-body, and thus is always terminated by the first empty line after the header fields.
    10941094      </p>
    1095       <p id="rfc.section.4.1.p.2">A 304 response <em class="bcp14">MUST</em> include a <a href="p2-semantics.html#header.date" class="smpl">Date</a> header field (<a href="p2-semantics.html#header.date" title="Date">Section 10.10</a> of <a href="#Part2" id="rfc.xref.Part2.4"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>) unless the origin server does not have a clock that can provide a reasonable approximation of the current time. If a <a href="p2-semantics.html#status.200" class="smpl">200
    1096             (OK)</a> response to the same request would have included any of the header fields <a href="p6-cache.html#header.cache-control" class="smpl">Cache-Control</a>, <a href="p2-semantics.html#header.content-location" class="smpl">Content-Location</a>, <a href="#header.etag" class="smpl">ETag</a>, <a href="p6-cache.html#header.expires" class="smpl">Expires</a>, or <a href="p6-cache.html#header.vary" class="smpl">Vary</a>, then those same header fields <em class="bcp14">MUST</em> be sent in a 304 response.
     1095      <p id="rfc.section.4.1.p.2">A 304 response <em class="bcp14">MUST</em> include a <a href="p2-semantics.html#header.date" class="smpl">Date</a> header field (<a href="p2-semantics.html#header.date" title="Date">Section 8.2.1</a> of <a href="#Part2" id="rfc.xref.Part2.4"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>) unless the origin server does not have a clock that can provide a reasonable approximation of the current time. If a <a href="p2-semantics.html#status.200" class="smpl">200
     1096            (OK)</a> response to the same request would have included any of the header fields <a href="p6-cache.html#header.cache-control" class="smpl">Cache-Control</a>, <a href="p2-semantics.html#header.content-location" class="smpl">Content-Location</a>, <a href="#header.etag" class="smpl">ETag</a>, <a href="p6-cache.html#header.expires" class="smpl">Expires</a>, or <a href="p2-semantics.html#header.vary" class="smpl">Vary</a>, then those same header fields <em class="bcp14">MUST</em> be sent in a 304 response.
    10971097      </p>
    10981098      <p id="rfc.section.4.1.p.3">Since the goal of a 304 response is to minimize information transfer when the recipient already has one or more cached representations,
     
    13461346  <a href="#imported.abnf" class="smpl">obs-text</a>      = &lt;obs-text, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: Message Routing and Syntax&#34;">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
    13471347</pre><p id="rfc.section.B.p.4">The rules below are defined in other parts:</p>
    1348       <div id="rfc.figure.u.17"></div><pre class="inline">  <a href="#imported.abnf" class="smpl">HTTP-date</a>     = &lt;HTTP-date, defined in <a href="#Part2" id="rfc.xref.Part2.5"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>, <a href="p2-semantics.html#http.date" title="Date/Time Formats">Section 6.1</a>&gt;
     1348      <div id="rfc.figure.u.17"></div><pre class="inline">  <a href="#imported.abnf" class="smpl">HTTP-date</a>     = &lt;HTTP-date, defined in <a href="#Part2" id="rfc.xref.Part2.5"><cite title="HTTP/1.1, part 2: Semantics and Payloads">[Part2]</cite></a>, <a href="p2-semantics.html#http.date" title="Date/Time Formats">Section 9.1</a>&gt;
    13491349</pre><h1 id="rfc.section.C"><a href="#rfc.section.C">C.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
    13501350      <div id="rfc.figure.u.18"></div> <pre class="inline"><a href="#header.etag" class="smpl">ETag</a> = entity-tag
    13511351
    1352 <a href="#imported.abnf" class="smpl">HTTP-date</a> = &lt;HTTP-date, defined in [Part2], Section 6.1&gt;
     1352<a href="#imported.abnf" class="smpl">HTTP-date</a> = &lt;HTTP-date, defined in [Part2], Section 9.1&gt;
    13531353
    13541354<a href="#header.if-match" class="smpl">If-Match</a> = "*" / ( *( "," OWS ) entity-tag *( OWS "," [ OWS
     
    14711471                  </li>
    14721472                  <li><em>Part2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.1">1</a>, <a href="#rfc.xref.Part2.2">2.3.3</a>, <a href="#rfc.xref.Part2.3">2.3.3</a>, <a href="#rfc.xref.Part2.4">4.1</a>, <a href="#Part2"><b>9.1</b></a>, <a href="#rfc.xref.Part2.5">B</a><ul>
    1473                         <li><em>Section 6.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.5">B</a></li>
    1474                         <li><em>Section 9</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.2">2.3.3</a></li>
    1475                         <li><em>Section 10.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.3">2.3.3</a></li>
    1476                         <li><em>Section 10.10</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.4">4.1</a></li>
     1473                        <li><em>Section 3.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.2">2.3.3</a></li>
     1474                        <li><em>Section 6.3.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.3">2.3.3</a></li>
     1475                        <li><em>Section 8.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.4">4.1</a></li>
     1476                        <li><em>Section 9.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part2.5">B</a></li>
    14771477                     </ul>
    14781478                  </li>
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