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[lwip-devel] [bug #26267] Simultaneous close

From: Oleg Tyshev
Subject: [lwip-devel] [bug #26267] Simultaneous close
Date: Wed, 22 Apr 2009 12:26:09 +0000
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/2009040821 Firefox/3.0.9 GTB5

Follow-up Comment #14, bug #26267 (project lwip):

Exists one more issue with close of the connection.
FIN could be inserted to out of sequence queue.
If we want to support later shutdown() for sockets,
FIN should be accepted for transition to other TCP states only if it was
accepted in sequence.

Now tcp_receive() returns true for any segment that was received in sequence,
we could change it.
The function can return true if it was received FIN in sequence (in current
packet or as result of filling gap in out of sequence queue)


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