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Re: #290 [was: SHOULD-level requirements in p6-caching]

From: Poul-Henning Kamp <phk@phk.freebsd.dk>
Date: Wed, 04 May 2011 10:01:14 +0000
To: Mark Nottingham <mnot@mnot.net>
cc: HTTP Working Group <ietf-http-wg@w3.org>
Message-ID: <36549.1304503274@critter.freebsd.dk>
In message <E18FC49C-0865-4534-8A14-C30BA8D40295@mnot.net>, Mark Nottingham wri
tes:

>> I would like to see the text say that if there is a "Cache-Control:"
>> header "Pragma:" MUST be ignored, to resolve the possible conflicts
>> between them.
>
>We already have:
>
>> A cache SHOULD treat "Pragma: no-cache" as if the client had sent
>>    "Cache-Control: no-cache".
>
>
>so that makes them equivalent. 

That is probably a bit more than I would read into it.

But that does not in any way resolve what to do if you have both
and they are in conflict.

I think it is a good idea to state clearly that Cache-Control takes
precedence if both are present.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
Received on Wednesday, 4 May 2011 10:01:39 GMT

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