On 8/12/18 9:12 PM, Joe wrote:
Hello All!

I've been trying every possible combination and cannot get anything working. (>_<)

This is I think the closest I've got, I think the problem may be with the 3 argument.  I'm not sure how to join the Multicast IP membership?
(this code currently does not work - throws error:
'Unable to set socket option: An invalid argument was supplied'.)

Socket listen_socket = new Socket(AddressFamily.INET, SocketType.DGRAM, ProtocolType.UDP); listen_socket.setOption(SocketOptionLevel.IGMP, SocketOption.IPV6_JOIN_GROUP, 1);
auto adr = getAddress("0.0.0.0", "56000");
listen_socket.bind(adr[0]);


This is how the messages are sent (which works fine):

Socket udp_broadcast_soc = new UdpSocket();
udp_broadcast_soc.setOption(SocketOptionLevel.SOCKET, SocketOption.BROADCAST, 1);
auto adr = getAddress("239.192.0.10", 54000);
udp_broadcast_soc.sendTo(<message>, adr[0]);


Please Please Please Help, I am desperate!


This needs more context. What is your platform? Have you tried doing it in C to see what works?

One thing that stands out so far is you are using IPV4 addresses and constants everywhere, yet you are using IPV6_JOIN_GROUP socket option.

-Steve

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