Subscribing to multiple multicast groups on one socket (Linux, C)

Question

Is it possible to receive data from more than one multicast group on a single socket?

For example:

void AddGroup(int sock,
              const char*          


        

Answer 1

You can join as many multicast groups you want to on a single socket. See setsockopt(), IP_PKTINFO for a way to recognize which multicast group you are reading data from.