Notify on leaving a multicast group

Question

I set up a listener on a multicastgroup

udpclient.JoinMulticastGroup(multicastaddress, localIpAddress);
while(listeing)
    data = udpclient.receive(ref remoteep);

Afaik i don't get informed when an other member in the same multicastgroup leaves. I see it in wireshark under the IGMP Protocol.

How can i be informed when a member leaves the multicastgroup on my c# listener?

Answer 1

You can't. There is no API for it at the C level so no way of implementing one at a higher level.