Date: Sat, 10 Apr 2004 13:23:24 +0200 From: "Knocke" <knockefreebsd@o2.pl> To: <freebsd-net@freebsd.org> Subject: [nwebe] How to track TCP socket variables? (cwnd, ssthresh) Message-ID: <001901c41eee$3f09c0b0$df5561d9@ALFA>
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Hi! I'm about to get a bit deeper into TCP world, recently experienced a = problem - I need to have a real-time image of actual active TCP socket = state, its most important variables like: cwnd, ssthresh, S and R = windows, etc,=20 I thought I'd be possible to see using tcpdump, but as far as I know = it;s only a packet dumper based on datalink layer, so it knows nothing = about current machine's socket states. I've been searching the Internet = for a quite long time, and couldn't find anything smarter than different = packet analysers etc.=20 Could somebode give me hint what to do? Is there any tool to connect to = existing TCP socket and dump its state per each segment sent or = received? Or any other way to achive the goal? It could be also a kind = of dedicated benchmark tool (lice ttcp) that comes togehter with what i = need, I don't necesarly need to track existing sshd or apache owned = sockets.=20 kh
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