Re: Require UAs and intermediary caches to assume Vary: User-Agent from Poul-Henning Kamp on 2012-10-17 (ietf-http-wg@w3.org from October to December 2012)

From: Poul-Henning Kamp <phk@phk.freebsd.dk>
Date: Wed, 17 Oct 2012 08:15:51 +0000
To: "Simon Pieters" <simonp@opera.com>
cc: ietf-http-wg@w3.org
Message-ID: <5130.1350461751@critter.freebsd.dk>

--------
In message <op.wmbam8vtidj3kv@simons-macbook-pro.local>, "Simon Pieters" writes
:

>It would be useful if the spec required that UAs and intermediary caches  
>act as if all responses had Vary: User-Agent specified, since many pages  
>on the Web serve different content depending on the User-Agent header but  
>do not bother specifying Vary: User-Agent.
>
>I would like this to be filed as a new issue in the issue tracker.

Fine with me, provided you _first_ reduce the number of distinct
U-A strings on the web to something reasonable, lets say no more than 25 ?

-- 
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, 17 October 2012 08:16:15 UTC