Mike Lovell, le Mon 01 Apr 2013 00:35:03 -0600, a écrit : > On 03/08/2013 05:47 AM, Samuel Thibault wrote: > >Samuel Thibault, le Fri 08 Mar 2013 10:08:55 +0100, a écrit : > >>There does exist some unique address, which is returned by recvfrom, > >>I'll have a look at how to get access to it. > >Ah, no, it's not unique... It's just the host IP address and the same > >port as the multicast address, so it'll be the same for all qemus on the > >same host. I've checked how Linux bounces the datagram, it's through > >the loopback interface, and thus dispatched over all listeners without > >distinction. I don't see any way to get the information that the packet > >comes from us, except using the ethernet content. > > one solution is to actually use two sockets. one that is bound to the > multicast address, which receives the multicast packets, and another that is > just bound to any ephemeral udp port, which is used for sending packets.
Mmm, that should work indeed. > if the group is interested is a solution like this, i can probably make some > time over the next couple days to cook up a patch. thoughts? Yes, please. Samuel
