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Date:      Sat, 23 Nov 2002 20:49:38 -0500
From:      Alex Newman <dolemite@psiu.dyndns.org>
To:        freebsd-hackers@freebsd.org
Subject:   getting the rtt in a divert socket
Message-ID:  <20021124014938.GA21312@ultraalex.psiu.dyndns.org>

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I just finnished writing a program which introduces a small random delay on the  sending times in tcp to prevent synchronization of windows. I did it with divert sockets and ipfw.
The one problem is , I was planning on setting the random delay =RTT(1+x)/cwnd   where x is a random number. Currently i just have a small random number. 
Does anyone know a good way of picking out the cwnd and make a good estimate of the roundtrip time from the information flowing over divert sockets? Obviously i don't have to worry about the first calculation so i will probably set the RTT= something small.

-- 
Alex Newman			Quidquid latine dictum sit, altum viditur.
dolemite@wuli.nu		I don't know who came up with this quote. 
www.wuli.nu/users/dolemite

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