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Re: HEADERS and flow control

From: David Krauss <potswa@gmail.com>
Date: Wed, 21 May 2014 17:18:52 +0800
Message-Id: <A777BAF7-F7D4-43DB-B6EE-8AC0A2EC55EB@gmail.com>
To: HTTP Working Group <ietf-http-wg@w3.org>

On 20140521, at 3:57 PM, David Krauss <potswa@gmail.com> wrote:

> I suspect that it would not exist but for legacy SPDY implementations. But, aside from adding some overhead (at least 24 bytes per TCP frame, approximately doubling the overhead of TCP) and implementation complexity, its harmless. Fortunately, its absence is harmless too.

Er, stream-level flow control is essential to proxying several origin servers with different TCP windows. But since header blocks suspend multiplexing, you can only proxy a single server at a time during header transmission.

I still dislike connection window updates, though.
Received on Wednesday, 21 May 2014 09:19:41 UTC

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