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Re: Re[2]: Moving forward with HTTP/2.0: proposed charter

From: Robert Collins <robertc@squid-cache.org>
Date: Mon, 6 Aug 2012 20:51:22 +1200
Message-ID: <CAJ3HoZ05gRkZz_i-=WieFuTF-_hhK5L9oi5FRh27uQ-ywg+4OQ@mail.gmail.com>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
Cc: Willy Tarreau <w@1wt.eu>, Adrien de Croy <adrien@qbik.com>, James M Snell <jasnell@gmail.com>, Mark Nottingham <mnot@mnot.net>, "ietf-http-wg@w3.org Group" <ietf-http-wg@w3.org>
On Mon, Aug 6, 2012 at 8:45 PM, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote:
> But is 1.1 vs. 2.0 proxy really going to make that much of a difference ?

Yes, absolutely.

The key bits are:
 - Fix HoL blocking
 - Only require one TCP connection
 - Define a mechanism for advising clients of the proxy to use

Transparent proxies pay TCP setup and window opening etc on each site.
Non-transparent proxies aren't trivially offered today.
Head of line blocking affects mobile significantly, and even a 2.0
proxy doing 1.1 conversion could support client driven prioritisation
amongst the N backend connections *it* is making. [BTW: this seems
like yet another reason to have clients drive the HoL prioritisation
stuff].

-Rob
Received on Monday, 6 August 2012 08:51:52 GMT

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