Changeset 1845 for draft-ietf-httpbis/latest/p4-conditional.html
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- 01/09/12 12:30:48 (10 years ago)
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draft-ietf-httpbis/latest/p4-conditional.html
r1828 r1845 440 440 } 441 441 @top-right { 442 content: " August2012";442 content: "September 2012"; 443 443 } 444 444 @top-center { … … 449 449 } 450 450 @bottom-center { 451 content: "Expires February 19, 2013";451 content: "Expires March 5, 2013"; 452 452 } 453 453 @bottom-right { … … 486 486 <link href="p2-semantics.html" rel="prev"> 487 487 <link href="p5-range.html" rel="next"> 488 <meta name="generator" content="http://greenbytes.de/tech/webdav/rfc2629.xslt, Revision 1.58 6, 2012-07-23 18:36:34, XSLT vendor: SAXON 8.9 from Saxonica http://www.saxonica.com/">488 <meta name="generator" content="http://greenbytes.de/tech/webdav/rfc2629.xslt, Revision 1.588, 2012-08-25 12:28:24, XSLT vendor: SAXON 8.9 from Saxonica http://www.saxonica.com/"> 489 489 <link rel="schema.dct" href="http://purl.org/dc/terms/"> 490 490 <meta name="dct.creator" content="Fielding, R."> … … 492 492 <meta name="dct.creator" content="Reschke, J. F."> 493 493 <meta name="dct.identifier" content="urn:ietf:id:draft-ietf-httpbis-p4-conditional-latest"> 494 <meta name="dct.issued" scheme="ISO8601" content="2012-0 8-18">494 <meta name="dct.issued" scheme="ISO8601" content="2012-09-01"> 495 495 <meta name="dct.replaces" content="urn:ietf:rfc:2616"> 496 496 <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."> … … 518 518 </tr> 519 519 <tr> 520 <td class="left">Expires: February 19, 2013</td>520 <td class="left">Expires: March 5, 2013</td> 521 521 <td class="right">J. Reschke, Editor</td> 522 522 </tr> … … 527 527 <tr> 528 528 <td class="left"></td> 529 <td class="right"> August 18, 2012</td>529 <td class="right">September 1, 2012</td> 530 530 </tr> 531 531 </tbody> … … 554 554 in progress”. 555 555 </p> 556 <p>This Internet-Draft will expire on February 19, 2013.</p>556 <p>This Internet-Draft will expire on March 5, 2013.</p> 557 557 <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1> 558 558 <p>Copyright © 2012 IETF Trust and the persons identified as the document authors. All rights reserved.</p> … … 884 884 </div> 885 885 <h3 id="rfc.section.2.3.3"><a href="#rfc.section.2.3.3">2.3.3</a> <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 8</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 9.3</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 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>): 887 887 </p> 888 888 <div id="rfc.figure.u.5"></div> … … 1093 1093 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. 1094 1094 </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 9.10</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">2001095 <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 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. 1097 1097 </p> … … 1269 1269 <tr> 1270 1270 <td class="reference"><b id="Part1">[Part1]</b></td> 1271 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-latest">HTTP/1.1, part 1: Message Routing and Syntax"</a>”, Internet-Draft draft-ietf-httpbis-p1-messaging-latest (work in progress), August 2012.1271 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-latest">HTTP/1.1, part 1: Message Routing and Syntax"</a>”, Internet-Draft draft-ietf-httpbis-p1-messaging-latest (work in progress), September 2012. 1272 1272 </td> 1273 1273 </tr> 1274 1274 <tr> 1275 1275 <td class="reference"><b id="Part2">[Part2]</b></td> 1276 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics-latest">HTTP/1.1, part 2: Semantics and Payloads</a>”, Internet-Draft draft-ietf-httpbis-p2-semantics-latest (work in progress), August 2012.1276 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics-latest">HTTP/1.1, part 2: Semantics and Payloads</a>”, Internet-Draft draft-ietf-httpbis-p2-semantics-latest (work in progress), September 2012. 1277 1277 </td> 1278 1278 </tr> 1279 1279 <tr> 1280 1280 <td class="reference"><b id="Part5">[Part5]</b></td> 1281 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p5-range-latest">HTTP/1.1, part 5: Range Requests</a>”, Internet-Draft draft-ietf-httpbis-p5-range-latest (work in progress), August 2012.1281 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p5-range-latest">HTTP/1.1, part 5: Range Requests</a>”, Internet-Draft draft-ietf-httpbis-p5-range-latest (work in progress), September 2012. 1282 1282 </td> 1283 1283 </tr> 1284 1284 <tr> 1285 1285 <td class="reference"><b id="Part6">[Part6]</b></td> 1286 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, <a href="mailto:mnot@mnot.net" title="Rackspace">Nottingham, M., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache-latest">HTTP/1.1, part 6: Caching</a>”, Internet-Draft draft-ietf-httpbis-p6-cache-latest (work in progress), August 2012.1286 <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, <a href="mailto:mnot@mnot.net" title="Rackspace">Nottingham, M., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache-latest">HTTP/1.1, part 6: Caching</a>”, Internet-Draft draft-ietf-httpbis-p6-cache-latest (work in progress), September 2012. 1287 1287 </td> 1288 1288 </tr> … … 1346 1346 <a href="#imported.abnf" class="smpl">obs-text</a> = <obs-text, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: Message Routing and Syntax"">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>> 1347 1347 </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> = <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 5.1</a>>1348 <div id="rfc.figure.u.17"></div><pre class="inline"> <a href="#imported.abnf" class="smpl">HTTP-date</a> = <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>> 1349 1349 </pre><h1 id="rfc.section.C"><a href="#rfc.section.C">C.</a> <a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1> 1350 1350 <div id="rfc.figure.u.18"></div> <pre class="inline"><a href="#header.etag" class="smpl">ETag</a> = entity-tag 1351 1351 1352 <a href="#imported.abnf" class="smpl">HTTP-date</a> = <HTTP-date, defined in [Part2], Section 5.1>1352 <a href="#imported.abnf" class="smpl">HTTP-date</a> = <HTTP-date, defined in [Part2], Section 6.1> 1353 1353 1354 1354 <a href="#header.if-match" class="smpl">If-Match</a> = "*" / ( *( "," OWS ) entity-tag *( OWS "," [ OWS … … 1471 1471 </li> 1472 1472 <li><em>Part2</em> <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 5.1</em> <a href="#rfc.xref.Part2.5">B</a></li>1474 <li><em>Section 8</em> <a href="#rfc.xref.Part2.2">2.3.3</a></li>1475 <li><em>Section 9.3</em> <a href="#rfc.xref.Part2.3">2.3.3</a></li>1476 <li><em>Section 9.10</em> <a href="#rfc.xref.Part2.4">4.1</a></li>1473 <li><em>Section 6.1</em> <a href="#rfc.xref.Part2.5">B</a></li> 1474 <li><em>Section 9</em> <a href="#rfc.xref.Part2.2">2.3.3</a></li> 1475 <li><em>Section 10.3</em> <a href="#rfc.xref.Part2.3">2.3.3</a></li> 1476 <li><em>Section 10.10</em> <a href="#rfc.xref.Part2.4">4.1</a></li> 1477 1477 </ul> 1478 1478 </li>
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