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[lwip-devel] [bug #26309] Implement SOF_BROADCAST

From: Frédéric Bernon
Subject: [lwip-devel] [bug #26309] Implement SOF_BROADCAST
Date: Thu, 23 Apr 2009 14:52:57 +0000
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv: Gecko/2009040821 Firefox/3.0.9 (.NET CLR 3.5.30729)

Follow-up Comment #4, bug #26309 (project lwip):

Implement SOF_BROADCAST is a "new" feature which will avoid some bugs.

Using shutdown is not a so good solution, since I remember that  calling
"shutdown(sock,SHUT_RD)" will return an error on any next "recv/recvfrom"
calls, but packets continue to be enqueued: I'm sure of that with windows
system (see http://msdn.microsoft.com/en-us/library/ms740481(VS.85).aspx), but
not for linux (it's not very clear). More, "shutdown" should do some extras
operations on tcp sockets (like send a FIN after all data are sent and
acknowledged by the receiver).


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