>> Direccion.sin_addr.s_addr=inet_addr("224.0.22.1");//("138.4.32.34");
>Binding to a multicast address doesn't work on windows. You must bind to INADDR_ANY. Exactly, my problem is already solved, thanks. Victor -- View this message in context: http://www.nabble.com/Problem-Adding-Membership-Multicast-Errno-22-tp22119431p22159154.html Sent from the Cygwin list mailing list archive at Nabble.com. -- 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/