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Re: i37: Vary and non-existant headers

From: David Morris <dwm@xpasc.com>
Date: Wed, 6 May 2009 20:35:10 -0700 (PDT)
To: "Roy T. Fielding" <fielding@gbiv.com>
cc: Mark Nottingham <mnot@mnot.net>, Julian Reschke <julian.reschke@gmx.de>, HTTP Working Group <ietf-http-wg@w3.org>
Message-ID: <Pine.LNX.4.64.0905062034150.3567@egate.xpasc.com>

For my dense brain, could you provide an explicit example of a header 
which would have a different meaning?

On Wed, 6 May 2009, Roy T. Fielding wrote:

> On May 6, 2009, at 5:38 PM, David Morris wrote:
>> On Thu, 7 May 2009, Mark Nottingham wrote:
>>> and adding this to the subsequent paragraph (defining what it means to 
>>> match):
>>> 
>>> If a header field is absent from a a request, it can only match another 
>>> request if it is also absent there.
>>> 
>> Any reason we can't make an empty value == to absent for this purpose?
>
> Because they don't mean the same thing in HTTP.
>
> ....Roy
Received on Thursday, 7 May 2009 03:35:53 GMT

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