FIN_WAIT_2

From: Robert Gogolok (robertgogolok_at_web.de)
Date: 03/22/05

  • Next message: John Mok: "Re: HOWTO connect MCI using Netgraph + Frame Relay with Digi SYNC/570i" 
    Date: Tue, 22 Mar 2005 14:18:34 +0100
To: freebsd-net@freebsd.org

    Hi!

    I have many (about 100) connections in FIN_WAIT_2 state on my webserver
    (FreeBSD 5.3, apache 2.5.53).

    I discussed a few questions already on the freebsd-questions list, see
    http://lists.freebsd.org/pipermail/freebsd-questions/2005-March/081580.html

    Some connections doesn't seem to go away (they remain in FIN_WAIT_2
    state) after 2 hours, what is the exact timeout?

    I can see every 5 minutes ACK packages sent from that FIN_WAIT_2
    connections. Is these because of tcp keep alive (or which RFC specifies
    that behaviour)?
    tcpdump output:
    16:04:12.987415 IP HTTP_SERVER.http > HTTP_CLIENT.10228: . ack
    1760359226 win 0
    16:04:12.987678 IP HTTP_SERVER.http > HTTP_CLIENT.10228: . ack
    1760359226 win 32900
    16:08:57.944008 IP HTTP_SERVER.http > HTTP_CLIENT.10228: . ack
    1760359226 win 0
    16:08:57.944300 IP HTTP_SERVER.http > HTTP_CLIENT.10228: . ack
    1760359226 win 32900
    ...

    Greetings,
    Robert
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  • Next message: John Mok: "Re: HOWTO connect MCI using Netgraph + Frame Relay with Digi SYNC/570i"

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