On Aug 17 01:42, Alessandro Saffiotti wrote: > Hi there, > > I ran into the following problem when using setsockopt to create a > multicast receiver in my own application. Here is the relevant part > of the code: > [...] > if(setsockopt(tcp_broadcast_receiver, IPPROTO_IP, IP_ADD_MEMBERSHIP, > (const void *)&imreq, sizeof(struct ip_mreq)) != 0) > [...] > I have also read the discussion about the conflicting values for > constants between winsock1 and winsock2. I have tried to replace > IP_ADD_MEMBERSHIP by hardcoding either 5 (winsock1) or 12 (winsok2), > but I get the same behavior.
Please don't do that, use the constants. > I run Cygwin 1.5.18 on Windows XP pro SP2. > > Any hints? Yes, upgrade to Cygwin 1.5.21 and try again, starting with recompiling the application. If it still fails, I'll have another look into it. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- 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/
