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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.tests;

import java.io.IOException;
import java.net.*;
import java.nio.channels.DatagramChannel;
import java.nio.channels.MembershipKey;

/**
 * Tests {@link MulticastSocket#joinGroup(InetAddress)} and {@link DatagramChannel#join(InetAddress, NetworkInterface)}.
 * Both tests fail when running as a native image under GraalVM 19.0.1.
 * @author Bela Ban
 * @since  4.1.2
 */
public class MulticastTest {
    protected static final InetAddress group;
    protected static final InetAddress bind_addr;
    protected static final int         PORT=6789;

    static {
        try {
            group=InetAddress.getByName("239.5.5.5");
            bind_addr=InetAddress.getLocalHost();
        }
        catch(UnknownHostException e) {
            throw new RuntimeException(e);
        }
    }


    public static void main(String[] args) throws Exception {
        MulticastTest test=new MulticastTest();
        if(args.length > 0 && args[0].equalsIgnoreCase("-nio"))
            MulticastTest.testDatagramChannel();
        else
            MulticastTest.testMulticastSocket();
    }


    protected static void testMulticastSocket() throws IOException {
        MulticastSocket sock=new MulticastSocket(new InetSocketAddress(PORT));
        NetworkInterface ni=NetworkInterface.getByInetAddress(bind_addr);
        sock.setNetworkInterface(ni);
        sock.joinGroup(new InetSocketAddress(group, PORT), ni);
        System.out.printf("%s: local=%s, remote=%s\n", sock.getClass().getSimpleName(),
                          sock.getLocalSocketAddress(), sock.getRemoteSocketAddress());
    }

    protected static void testDatagramChannel() throws IOException {
        NetworkInterface ni = NetworkInterface.getByInetAddress(InetAddress.getLocalHost());

        DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET)
          .setOption(StandardSocketOptions.SO_REUSEADDR, true)
          .bind(new InetSocketAddress(PORT))
          .setOption(StandardSocketOptions.IP_MULTICAST_IF, ni);

        MembershipKey key = dc.join(group, ni);
        System.out.println("key = " + key);
    }

}