On Mon, Feb 01, 2010 at 06:32:37PM -0200, Christiano F. Haesbaert wrote: > Sorry if this is a little bit out of topic, but I'm developing it in > OpenBSD and I couldn't find a definitive answer. > > My application has one process for each interface, therefore I have > one socket to each process, I need each socket to receive packets that > came only through their interface. > > So process that handles interface iwn0 should only receive packets > that came through iwn0, and process that handles interface em0, should > see only packets for em0. > > I'm interested in multicast packets, no doubts about joining the > group, that I understand. > > Well I obviously don't want to bind to INADDR_ANY, even so, if I did, > would the packets be delivered in both sockets ? > > I could also try to play with MCAST_BLOCK_SOURCE, but that doesn't > seem nice either. > > Pardon my ignorance here, but if I bind each socket to a unicast > address of the specified interface, I'll get what I want, but what > happens if the address changes ? Do I need to rebind the socket ? > I understand that if I need to rebind, I'll use AF_ROUTE to get > address changes and so on, that's wouldn't be much of a trouble. > > If that's any of concern, I'm joining multicast dns group, and the > protocol uses udp port 5353. > > Sorry for the long post. >
I now realize how dumb my question was, I can't obviously bind the same address in two different sockets, sorry for the noise. -- Christiano Farina HAESBAERT Do NOT send me html mail.
