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Subject: Re: [office] Re: [office-metadata] Suggested Changes on the Metadataproposal
I'll try to give an example from the HTTP spec: http://www.w3.org/Protocols/rfc2616/rfc2616.html In 14.15 Content-MD5 it is stated that servers MAY generate the Content-MD5 header field. (and that proxies obviously MUST NOT generate it). It further states that "[a]ny recipient of the entity- body, including gateways and proxies, MAY check that the digest value in this header field matches that of the entity-body as received." Consequently the client is not under any obligation to do anything with this field. Whether it emits a warning if the check fails or whether it implements such a check at all is up to the discretion of the client's implementor. Thus, as Rob already stated, the specification informs the client implementor that a conforming server might send such a header. Whether he decides to act upon the information contained in the header has no impact on the actual conformance of that implementation. /Lars marbux wrote: > > > On 7/1/07, *robert_weir@us.ibm.com <mailto:robert_weir@us.ibm.com>* > <robert_weir@us.ibm.com <mailto:robert_weir@us.ibm.com>> wrote: > > > I think you're reading too much into the IETF's definition of MAY. > It explicitly says that a vendor is permitted to omit the item, > though it must accommodate itself and degrade functionality as > necessary. What is not permitted is that the application utterly > crash when presented with an item it does not understand. At least > that is the way it works for the IETF standards I'm familiar with. > > > We live in a world of ambiguities. :-) I can't testify to customary > practice, but what you describe is hard to square with the specific > language of the definition. E.g., it's hard for me to equate "not > crashing" with "interoperate." > -- Sun Microsystems Lars Oppermann <lars.oppermann@sun.com> Nagelsweg 55 Software Engineer 20097 Hamburg, Germany Phone: +49 40 23646 959 http://www.sun.com/ Fax: +49 40 23646 550
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