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Re: [hybi] hybi 10 ---- server to client masking

John Tamplin <jat@google.com> Wed, 20 July 2011 14:18 UTC

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From: John Tamplin <jat@google.com>
Date: Wed, 20 Jul 2011 10:18:18 -0400
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To: Arman Djusupov <arman@noemax.com>
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Cc: hybi@ietf.org, "Andy W. Song" <wsongcn@gmail.com>
Subject: Re: [hybi] hybi 10 ---- server to client masking
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On Wed, Jul 20, 2011 at 6:14 AM, Arman Djusupov <arman@noemax.com> wrote:

> I don't think you are correct. As far as I understand the discussions in
> the group over masking, the server to client masking is optional (server MAY
> MASK). Otherwise we would not need a masking flag in the frame header since
> client-to-server frames would always be masked and server-to-client frames
> would never be masked.
>

The flag was requested so intermediaries (including packet sniffers) could
interpret the frame without knowing the context (ie, which direction the
packet is going or negotiated extensions, etc).

-- 
John A. Tamplin
Software Engineer (GWT), Google

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