Changeset 2041 for draft-ietf-httpbis/latest/p2-semantics.xml
- Timestamp:
- 08/12/12 08:00:42 (10 years ago)
- File:
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- 1 edited
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draft-ietf-httpbis/latest/p2-semantics.xml
r2031 r2041 34 34 <!ENTITY effective-request-uri "<xref target='Part1' x:rel='#effective.request.uri' xmlns:x='http://purl.org/net/xml2rfc/ext'/>"> 35 35 <!ENTITY intermediaries "<xref target='Part1' x:rel='#intermediaries' xmlns:x='http://purl.org/net/xml2rfc/ext'/>"> 36 <!ENTITY transformations "<xref target='Part1' x:rel='#message.transformations' xmlns:x='http://purl.org/net/xml2rfc/ext'/>"> 36 37 <!ENTITY chunked-encoding "<xref target='Part1' x:rel='#chunked.encoding' xmlns:x='http://purl.org/net/xml2rfc/ext'/>"> 37 38 <!ENTITY http-url "<xref target='Part1' x:rel='#http-url' xmlns:x='http://purl.org/net/xml2rfc/ext'/>"> … … 582 583 </t> 583 584 <t> 584 A transforming proxy &MAY; modify the content coding if the585 new coding is known to be acceptable to the recipient, unless the586 "no-transform" cache-control directive is present in the message.587 </t>588 <t>589 585 If the media type includes an inherent encoding, such as a data format 590 586 that is always compressed, then that encoding would not be restated as … … 2784 2780 <x:anchor-alias value="203 (Non-Authoritative Information)"/> 2785 2781 <t> 2786 The representation in the response has been transformed or otherwise 2787 modified by a transforming proxy (&intermediaries;). Note that the 2788 behavior of transforming intermediaries is controlled by the no-transform 2789 Cache-Control directive (&header-cache-control;). 2790 </t> 2791 <t> 2792 This status code is only appropriate when the response status code would 2793 have been <x:ref>200 (OK)</x:ref> otherwise. When the status code before 2794 transformation would have been different, the 214 Transformation Applied 2795 warn-code (&header-warning;) is appropriate. 2796 </t> 2797 <t> 2798 Caches &MAY; use a heuristic (see &p6-heuristic;) to determine 2799 freshness for 203 responses. 2782 The request was successful but the enclosed payload has been modified 2783 from that of the origin server's <x:ref>200 (OK)</x:ref> response by a 2784 transforming proxy (&transformations;). This status code allows the proxy 2785 to notify recipients when a transformation has been applied, since that 2786 knowledge might impact later decisions regarding the content. 2787 For example, future cache validation requests for the content might only 2788 be applicable along the same request path (through the same proxies). 2789 </t> 2790 <t> 2791 The 203 response is similar to the Warning code of 214 Transformation 2792 Applied (&header-warning;), which has the advantage of being applicable 2793 to responses with any status code. 2800 2794 </t> 2801 2795 </section>
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