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Changeset 697 for draft-ietf-httpbis/latest/p4-conditional.html
- Timestamp:
- 25/09/09 14:43:16 (13 years ago)
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- 1 edited
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draft-ietf-httpbis/latest/p4-conditional.html (modified) (10 diffs)
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draft-ietf-httpbis/latest/p4-conditional.html
r689 r697 396 396 <meta name="DC.Creator" content="Reschke, J. F."> 397 397 <meta name="DC.Identifier" content="urn:ietf:id:draft-ietf-httpbis-p4-conditional-latest"> 398 <meta name="DC.Date.Issued" scheme="ISO8601" content="2009-09- 01">398 <meta name="DC.Date.Issued" scheme="ISO8601" content="2009-09-25"> 399 399 <meta name="DC.Relation.Replaces" content="urn:ietf:rfc:2616"> 400 400 <meta name="DC.Description.Abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 4 of the seven-part specification that defines the protocol referred to as "HTTP/1.1" and, taken together, obsoletes RFC 2616. Part 4 defines request header fields for indicating conditional requests and the rules for constructing responses to those requests."> … … 428 428 </tr> 429 429 <tr> 430 <td class="header left">Expires: March 5, 2010</td>430 <td class="header left">Expires: March 29, 2010</td> 431 431 <td class="header right">HP</td> 432 432 </tr> … … 481 481 <tr> 482 482 <td class="header left"></td> 483 <td class="header right">September 1, 2009</td>483 <td class="header right">September 25, 2009</td> 484 484 </tr> 485 485 </table> … … 505 505 <p>The list of Internet-Draft Shadow Directories can be accessed at <<a href="http://www.ietf.org/shadow.html">http://www.ietf.org/shadow.html</a>>. 506 506 </p> 507 <p>This Internet-Draft will expire in March 5, 2010.</p>507 <p>This Internet-Draft will expire in March 29, 2010.</p> 508 508 <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1> 509 509 <p>Copyright © 2009 IETF Trust and the persons identified as the document authors. All rights reserved.</p> … … 858 858 <div id="rfc.iref.h.1"></div> 859 859 <h2 id="rfc.section.6.1"><a href="#rfc.section.6.1">6.1</a> <a id="header.etag" href="#header.etag">ETag</a></h2> 860 <p id="rfc.section.6.1.p.1">The response-header field "ETag"provides the current value of the entity tag (see <a href="#entity.tags" title="Entity Tags">Section 2</a>) for the requested variant. The headers used with entity tags are described in Sections <a href="#header.if-match" id="rfc.xref.header.if-match.2" title="If-Match">6.2</a> and <a href="#header.if-none-match" id="rfc.xref.header.if-none-match.2" title="If-None-Match">6.4</a> of this document, and in <a href="p5-range.html#header.if-range" title="If-Range">Section 5.3</a> of <a href="#Part5" id="rfc.xref.Part5.4"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>. The entity tag <em class="bcp14">MAY</em> be used for comparison with other entities from the same resource (see <a href="#weak.and.strong.validators" title="Weak and Strong Validators">Section 4</a>).860 <p id="rfc.section.6.1.p.1">The "ETag" response-header field provides the current value of the entity tag (see <a href="#entity.tags" title="Entity Tags">Section 2</a>) for the requested variant. The headers used with entity tags are described in Sections <a href="#header.if-match" id="rfc.xref.header.if-match.2" title="If-Match">6.2</a> and <a href="#header.if-none-match" id="rfc.xref.header.if-none-match.2" title="If-None-Match">6.4</a> of this document, and in <a href="p5-range.html#header.if-range" title="If-Range">Section 5.3</a> of <a href="#Part5" id="rfc.xref.Part5.4"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>. The entity tag <em class="bcp14">MAY</em> be used for comparison with other entities from the same resource (see <a href="#weak.and.strong.validators" title="Weak and Strong Validators">Section 4</a>). 861 861 </p> 862 862 <div id="rfc.figure.u.4"></div><pre class="inline"><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span> <a href="#header.etag" class="smpl">ETag</a> = "ETag" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.etag" class="smpl">ETag-v</a> … … 879 879 <div id="rfc.iref.h.2"></div> 880 880 <h2 id="rfc.section.6.2"><a href="#rfc.section.6.2">6.2</a> <a id="header.if-match" href="#header.if-match">If-Match</a></h2> 881 <p id="rfc.section.6.2.p.1">The request-header field "If-Match"is used with a method to make it conditional. A client that has one or more entities previously881 <p id="rfc.section.6.2.p.1">The "If-Match" request-header field is used with a method to make it conditional. A client that has one or more entities previously 882 882 obtained from the resource can verify that one of those entities is current by including a list of their associated entity 883 883 tags in the If-Match header field. Entity tags are defined in <a href="#entity.tags" title="Entity Tags">Section 2</a>. The purpose of this feature is to allow efficient updates of cached information with a minimum amount of transaction overhead. … … 912 912 <div id="rfc.iref.h.3"></div> 913 913 <h2 id="rfc.section.6.3"><a href="#rfc.section.6.3">6.3</a> <a id="header.if-modified-since" href="#header.if-modified-since">If-Modified-Since</a></h2> 914 <p id="rfc.section.6.3.p.1">The request-header field "If-Modified-Since"is used with a method to make it conditional: if the requested variant has not914 <p id="rfc.section.6.3.p.1">The "If-Modified-Since" request-header field is used with a method to make it conditional: if the requested variant has not 915 915 been modified since the time specified in this field, an entity will not be returned from the server; instead, a 304 (Not 916 916 Modified) response will be returned without any message-body. … … 959 959 <div id="rfc.iref.h.4"></div> 960 960 <h2 id="rfc.section.6.4"><a href="#rfc.section.6.4">6.4</a> <a id="header.if-none-match" href="#header.if-none-match">If-None-Match</a></h2> 961 <p id="rfc.section.6.4.p.1">The request-header field "If-None-Match"is used with a method to make it conditional. A client that has one or more entities961 <p id="rfc.section.6.4.p.1">The "If-None-Match" request-header field is used with a method to make it conditional. A client that has one or more entities 962 962 previously obtained from the resource can verify that none of those entities is current by including a list of their associated 963 963 entity tags in the If-None-Match header field. The purpose of this feature is to allow efficient updates of cached information … … 993 993 <div id="rfc.iref.h.5"></div> 994 994 <h2 id="rfc.section.6.5"><a href="#rfc.section.6.5">6.5</a> <a id="header.if-unmodified-since" href="#header.if-unmodified-since">If-Unmodified-Since</a></h2> 995 <p id="rfc.section.6.5.p.1">The request-header field "If-Unmodified-Since"is used with a method to make it conditional. If the requested resource has995 <p id="rfc.section.6.5.p.1">The "If-Unmodified-Since" request-header field is used with a method to make it conditional. If the requested resource has 996 996 not been modified since the time specified in this field, the server <em class="bcp14">SHOULD</em> perform the requested operation as if the If-Unmodified-Since header were not present. 997 997 </p> … … 1013 1013 <div id="rfc.iref.h.6"></div> 1014 1014 <h2 id="rfc.section.6.6"><a href="#rfc.section.6.6">6.6</a> <a id="header.last-modified" href="#header.last-modified">Last-Modified</a></h2> 1015 <p id="rfc.section.6.6.p.1">The entity-header field "Last-Modified"indicates the date and time at which the origin server believes the variant was last1015 <p id="rfc.section.6.6.p.1">The "Last-Modified" entity-header field indicates the date and time at which the origin server believes the variant was last 1016 1016 modified. 1017 1017 </p>
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