linux-kernel - Re: Honoring SO_RCVLOWAT in proto

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Message-Id: <20080922.051538.266960382.davem@davemloft.net>
Date:	Mon, 22 Sep 2008 05:15:38 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	alan@...rguk.ukuu.org.uk
Cc:	vcaputo@...garu.com, linux-kernel@...r.kernel.org
Subject: Re: Honoring SO_RCVLOWAT in proto_ops.poll methods

From: Alan Cox <alan@...rguk.ukuu.org.uk>
Date: Sun, 21 Sep 2008 21:13:37 +0100

> Thats a gloriously insane way of trying to do HTTP/1.1, and one I'm not
> sure is actually viable in the real world because the TCP window may be
> smaller than the number of bytes required to find a Host: header - so you
> may simply not be able to receive it via MSG_PEEK. In particular mobile
> phone gateways have a nasty habit of using very small windows.
> 
> > I just don't see a good solution for what I'm doing other than MSG_PEEK
> > and SO_RCVLOWAT, any ideas?
> 
> I don't either, and while I don't agree that what you are doing for
> HTTP/1.1 is remotely sane there are probably other cases this would be
> both sane and useful which does suggest fixing it would be beneficial

I agree and I'll try to move this forward.
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