Re: The dreadful CLOSE_WAIT

[DervishD <raul@pleyades.net>]

    Hi William :)

 * William Lee Irwin III <wli@holomorphy.com> dixit:
> >> Probably best to implement timeouts by hand in your network daemon.
> >     Of course, this is a bug in the application, but anyway the
> > kernel (IMHO) shouldn't allow this.
> I suspect the sysctls controlling this, tcp_fin_timeout, tcp_max_orphans,
> etc., may be useful to you. Check Documentation/networking/ip-sysctl.txt

    tcp_fin_timeout is of no help here, since the server is not stuck
in FIN_WAIT2, and in addition to this, the connection is not closed,
that is exactly the problem. tcp_max_orphans refer to TCP connections
not attached to any user file handle, but a connection in state
CLOSE_WAIT is still attached to a file handle, to a valid one indeed.

    A grep in the kernel sources didn't give any useful guide about
which sysctl parameter will help :((

    Thanks anyway, William :) Maybe tcp_max_orphans can help, don't
know.

    Raúl Núñez de Arenas Coronado

-- 
Linux Registered User 88736
http://www.pleyades.net & http://raul.pleyades.net/