- From: Poul-Henning Kamp <phk@phk.freebsd.dk>
- Date: Mon, 02 May 2011 07:12:43 +0000
- To: Willy Tarreau <w@1wt.eu>
- cc: Mark Nottingham <Mnot@mnot.net>, HTTP Working Group <ietf-http-wg@w3.org>
In message <20110502064055.GK10529@1wt.eu>, Willy Tarreau writes: >> PS: Is it just me or are large pointless HTTP-headers an indicator of >> mobile devices where users pay for bandwidth ? > >It may be just you :-) Check the headers from a device rhyming with "Jack&Terry" :-) It may be that the headers are added in a land-side proxy, but they are somewhat obese still. >BTW this makes me think that there are 3 request headers which are >responsible for something like 80% of the upstream bandwidth : > - User-Agent > - Cookie > - Referer One of the more amusing ways to bust caches is to include "Vary: User-agent" in a response. One would think that there would be two identical browsers on the planet but I guess we're all individualists in that respect. I think that we should recommend that clients not send a U-A header at all, to enourage servers to DTRT with respect to content portablity. -- 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 Monday, 2 May 2011 07:13:07 UTC