X-Spam-Check-By: sourceware.org Date: Thu, 17 Aug 2006 12:02:42 -0500 From: Brian Ford Reply-To: cygwin@cygwin.com cc: cygwin@cygwin.com Subject: RE: Cygwin 1.5.18: Problem using setsockopt() for multicast In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Thu, 17 Aug 2006, Alessandro Saffiotti wrote: > On Thu, 17 Aug 2006, Brian Ford wrote: > > Oh yeah, you must call the setsockopt below after the bind on windows. > > Search MSDN for why. > > Thanks a lot, this actually fixed my problem. You're welcome. Sorry for the initial noise. > In case it may help someone else: I also need to make the socket > reusable by > > setsockopt(tcp_broadcast_receiver, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on) I've never had to do that, so it must be an issue with your code that requires it to be reusable. > and I have found that this, contrary to the IP_ADD_MEMBERSHIP case, > must be called BEFORE I bind the socket! Um, that makes sense, doesn't it? -- Brian Ford Lead Realtime Software Engineer VITAL - Visual Simulation Systems FlightSafety International the best safety device in any aircraft is a well-trained crew... . -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/