Changeset 1287 for draft-ietf-httpbis/latest/p6-cache.xml
- Timestamp:
- May 20, 2011, 12:06:38 AM (9 years ago)
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- 1 edited
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draft-ietf-httpbis/latest/p6-cache.xml
r1286 r1287 1498 1498 <x:anchor-alias value="pragma-directive"/> 1499 1499 <t> 1500 1500 The "Pragma" header field allows backwards compatibility with HTTP/1.0 1501 1501 caches, so that clients can specify a "no-cache" request that they will 1502 1502 understand (as Cache-Control was not defined until HTTP/1.1). When the … … 1505 1505 </t> 1506 1506 <t> 1507 1507 In HTTP/1.0, Pragma was defined as an extensible field for 1508 1508 implementation-specified directives for recipients. This specification 1509 1509 deprecates such extensions to improve interoperability. … … 1515 1515 </artwork></figure> 1516 1516 <t> 1517 1517 When the Cache-Control header is not present in a request, the no-cache 1518 1518 request pragma-directive &MUST; have the same effect on caches as if 1519 1519 "Cache-Control: no-cache" were present (see <xref … … 1527 1527 </t> 1528 1528 <figure> 1529 <artwork type=" code">1529 <artwork type="message/http; msgtype="response"" x:indent-with=" "> 1530 1530 GET / HTTP/1.1 1531 1531 Host: www.example.com 1532 1532 Cache-Control: max-age=30 1533 1533 Pragma: no-cache 1534 1534 1535 </artwork> 1535 1536 </figure> … … 1541 1542 <x:note> 1542 1543 <t> 1543 Note:Because the meaning of "Pragma: no-cache" in responses is not1544 <x:h>Note:</x:h> Because the meaning of "Pragma: no-cache" in responses is not 1544 1545 specified, it does not provide a reliable replacement for 1545 1546 "Cache-Control: no-cache" in them. 1546 1547 </t> 1547 1548 </x:note> 1548 1549 </section> … … 2601 2602 "Clarify differences between / requirements for request and response CC directives" 2602 2603 </t> 2603 2604 2605 2606 2604 <t> 2605 <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/174" />: 2606 "Caching authenticated responses" 2607 </t> 2607 2608 <t> 2608 2609 <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/208" />: … … 2696 2697 <t> 2697 2698 Closed issues: 2698 2699 2700 2701 2702 2703 2699 <list style="symbols"> 2700 <t> 2701 <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/292"/>: 2702 "Pragma" 2703 </t> 2704 </list> 2704 2705 </t> 2705 2706 </section>
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