Date: Tue, 06 Apr 2004 00:09:39 +0200 From: Andre Oppermann <andre@freebsd.org> To: Brandon Erhart <berhart@ErhartGroup.COM> Cc: freebsd-net@freebsd.org Subject: Re: FIN_WAIT_[1,2] and LAST_ACK Message-ID: <4071D923.A7E0D93F@freebsd.org> References: <20040405171756.90E3BF8F2@gemini.nersc.gov> <6.0.2.0.2.20040405133109.01c755c8@mx1.erhartgroup.com>
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Brandon Erhart wrote: > > Well, I responded to the group that I had taken one of the fellows advice > posting here, and modified the tcp_usrclosed in netinet/tcp_usrreq.c. > > So all is well -- it gets TCPS_CLOSED state and the tcps_close() function > called on the tuple IMMEDIATELY. It doesn't switch states depending on > which state the connection is currently in. I also made a sysctl variable > for it (to turn the "feature" on or off), and will post the small patch > along w/ some other small changes I have made soon. As far as I am aware (I was looking through and testing the FIN_WAIT states in 5.2 around last christmas) our TCP stack is behaving correctly. Do the FIN_WAIT_1|2 and LAST_ACK time out after 2MSL or do they stick around forever? If they stick around forever, then there is something broken. But I suspect you are just running out of the small space of local ports with your application as I said in the previous email. -- Andre > Thanks, > > Brandon > > At 11:17 AM 4/5/2004, you wrote: > > >In reply to Brandon Erhart <berhart@ErhartGroup.COM> : > > > > > Hello everyone, > > > > > However, I have run into a new problem. I am getting a good amount of > > > blocks stuck in FIN_WAIT_1, FIN_WAIT_2 or LAST_ACK that stick around for a > > > long while. > > > >Could you define "long" in this case? Are we talking about 60 > >seconds, or 60 minutes? I get the feeling that your requirements > >might make your perception of "long" different from others' notion of > >"long." > > > >The reason I ask is that there was a bug once upon a time that made > >some connections stick in LAST_ACK forever.... > > > > --eli > > > > > > > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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