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clinuxnetwork-programmingglibc

Joining Multiple Multicast Groups With 1 Socket but Different Ports?

I understand that I can bind to INADDR_ANY with 1 port and then join multiple multicast groups.

However, it seems like it is not possible to bind to INADDR_ANY and then join multiple multicast groups with different ports because it seems like the port has to be specified during binding but a socket can only bind once.

Is there a way to get around it so that I can have 1 socket to listen to multiple multicast groups with different ports?

Thanks in advance.

Solution

  • However, it seems like it is not possible to bind to INADDR_ANY

    Wrong.

    and then join multiple multicast groups with different ports

    Correct.

    because it seems like the port has to be specified during binding but a socket can only bind once.

    Correct.

    Is there a way to get around it so that I can have 1 socket to listen to multiple multicast groups with different ports?

    No.