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From: Wietse Venema (wietseporcupine.org)
Date: Tue Mar 06 2001 - 17:49:57 CST

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    That's it. Postfix connects/writes/disconnects. The changed behavior
    causes loss of data that was already written and acknowledged.

    The bad part is that there is no way for the sender to find out.

            Wietse

    Arjan de Vet:
    > In article <20010306213602.11432BC06Dspike.porcupine.org> you write:
    >
    > >Every 100 seconds means whenever the master 'wakeup' timer goes
    > >off. This means that UNIX-domain socket behavior has changed.
    >
    > I've looked through recent commits to socket code and this one may be
    > the problem (not verified yet, it's time to go to sleep ;-):
    >
    > jlemon 2001/02/13 18:09:12 PST
    >
    > Modified files:
    > sys/kern uipc_socket.c uipc_syscalls.c
    > Log:
    > Return ECONNABORTED from accept if connection is closed while on the
    > listen queue, as well as the current behavior of a zero-length sockaddr.
    >
    > Obtained from: KAME
    > Reviewed by: -net
    >
    > Revision Changes Path
    > 1.88 +3 -6 src/sys/kern/uipc_socket.c
    > 1.85 +15 -2 src/sys/kern/uipc_syscalls.c
    >
    > This change was applied on Feb 24 to FreeBSD 4.2-stable.
    >
    > The change in uipc_socket.c is:
    >
    > -365,11 +365,8
    > so->so_state &= ~SS_NOFDREF;
    > if ((so->so_state & SS_ISDISCONNECTED) == 0)
    > error = (*so->so_proto->pr_usrreqs->pru_accept)(so,
    > nam);
    > - else {
    > - if (nam)
    > - *nam = 0;
    > - error = 0;
    > - }
    > + else
    > + error = ECONNABORTED;
    > splx(s);
    > return (error);
    > }
    >
    > ECONNABORTED is exactly the error I'm seeing now.
    >
    > >At the very least, the kernel could deliver the data that
    > >is send with connect/write/disconnect.
    >
    > Arjan
    >
    > --
    > Arjan de Vet, Eindhoven, The Netherlands <Arjan.deVetadv.iae.nl>
    > URL: http://www.iae.nl/users/devet/ for PGP key: finger devetiae.nl
    >
    >
    >