I am using the RL-TCPNet, the MDK Version is 5.20.
And in my application ,I create an UDP server,and join 2 multicast
group, 225.0.0.1 and 225.0.0.2. The udp server port is 1001. This is
my code:
sock = socket (AF_INET, SOCK_DGRAM , IPPROTO_UDP);
addr.sin_port = htons(1001);
addr.sin_family = AF_INET;
//addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_addr.s_b1 = 225;
addr.sin_addr.s_b2 = 0;
addr.sin_addr.s_b3 = 0;
addr.sin_addr.s_b4 = 1;
bind (sock, (SOCKADDR *)&am
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