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Re: X-Forwarded-For and HTTP2

From: Willy Tarreau <w@1wt.eu>
Date: Wed, 8 Jul 2015 20:26:00 +0200
To: Fedor Indutny <fedor@indutny.com>
Cc: ietf-http-wg@w3.org
Message-ID: <20150708182600.GA25788@1wt.eu>
On Wed, Jul 08, 2015 at 11:20:33AM -0700, Fedor Indutny wrote:
> It is not adding the XFF to every HEADERS frame that is costly,
> it is parsing the protocol itself. Most of the TLS terminators at the
> moment skip this stage and just do one client connection = one
> backend connection.

Sure but they don't process the multiplexed frames either. That's
what I'm saying is expensive and complex. If you can process the
frames and multiplex multiple connections from one side to one or
multiple ones on the other side, adding HTTP processing on top of
them is relatively cheap.

Willy
Received on Wednesday, 8 July 2015 18:26:25 UTC

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