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[lwip-devel] [bug #26301] Out of order FIN closes half-closed connection

From: Kieran Mansley
Subject: [lwip-devel] [bug #26301] Out of order FIN closes half-closed connection
Date: Thu, 23 Apr 2009 08:10:28 +0000
User-agent: Opera/9.21 (X11; Linux i686; U; en)

Follow-up Comment #1, bug #26301 (project lwip):

This was also mentioned in BUG#26267.

I think there might be something to fix in tcp_receive() too:

        /* First received FIN will be ACKed +1, on any successive
         * FINs we are already in CLOSE_WAIT and have already done +1.
        if (pcb->state != CLOSE_WAIT) {
          pcb->rcv_nxt += tcplen;

I think we should do the same for the CLOSING state where we have also
already received a FIN.


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