Multicast Socket Joined Client Ip Address

Question

I'm working in client server project in java. i'm using MulticastSocket . I have to send some message to selective clients. But i don't know how to get joined client address. Can anyone please help me out.

Answer 1

Use code like below, this may help you.

  private void init() throws IOException {
    DatagramChannel channel = DatagramChannel.open(StandardProtocolFamily.INET);
    channel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    channel.configureBlocking(true); //optional
    channel.bind(new InetSocketAddress(5000));
    InetAddress iGroup = InetAddress.getByName("224.0.0.1");
    NetworkInterface intrf = NetworkInterface.getByName("lo"); // lo name could be changed according your requirement
    channel.setOption(StandardSocketOptions.IP_MULTICAST_IF, intrf);

    channel.join(iGroup, intrf);
}