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i37: Vary and non-existant headers

From: Mark Nottingham <mnot@mnot.net>
Date: Mon, 28 Jul 2008 16:18:45 +0100
Message-Id: <9831079C-31CE-450B-A8E6-E4796C49BAC3@mnot.net>
To: HTTP Working Group <ietf-http-wg@w3.org>


Roy sort-of proposed deleting "present" in <http://lists.w3.org/Archives/Public/ietf-http-wg/2006OctDec/0090.html 

In addition, I'd propose:

* adding: "When a resource's representations vary, an origin server  
SHOULD include the Vary header even when the selecting header(s) are  
not present; otherwise, caches will use that representation  

* adding: "Caches MAY canonicalise request headers before comparing  
them for purposes of determining whether they match during variant  

Mark Nottingham     http://www.mnot.net/
Received on Monday, 28 July 2008 15:19:23 UTC

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