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Date:      Wed, 21 Apr 1999 23:46:00 -0600
From:      Alex Rousskov <rousskov@ircache.net>
To:        David Greenman <dg@root.com>
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: _Some_ acks delayed for 200 msec? 
Message-ID:  <Pine.SGI.4.10.9904212338510.6184-100000@Meta-Bug>
In-Reply-To: <199904220524.WAA16883@implode.root.com>

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On Wed, 21 Apr 1999, David Greenman wrote:

>    I'm not familiar with what your application is doing over the wire, so I
> can only speculate. It sounds to me as though TCP_NODELAY wasn't actually
> set properly on the socket. Keep in mind that this option is not inherited
> in the accept()'ed file descriptor and thus the option must be set on that
> descriptor and not on the listen() socket.

Oof! I've trusted the accept(2) man page that says:

	The accept() argument extracts the first connection request
     on the queue of pending connections, creates a new socket with the
     same properties of s and allocates a new file descriptor for the 
     socket.

Apparently, "same properties" does not include TCP_NODELAY!

I will test with [correctly] disabled Nagle on the server side and let you
know the result.

Thanks,

Alex.



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