Examples of java.net.MulticastSocket.joinGroup()

java.net.MulticastSocket.joinGroup()
Joins a multicast group. Its behavior may be affected by setInterface or setNetworkInterface.
If there is a security manager, this method first calls its checkMulticast method with the mcastaddr argument as its argument. @param mcastaddr is the multicast address to join @exception IOException if there is an error joiningor when the address is not a multicast address. @exception SecurityException if a security manager exists and its checkMulticast method doesn't allow the join. @see SecurityManager#checkMulticast(InetAddress)

         }
         s.setSoTimeout(timeout);
         s.setTimeToLive(ttl);
         if(log.isTraceEnabled())
            log.trace("TTL on multicast discovery socket is " + ttl);
         s.joinGroup(iaGroup);
         if (trace)
            log.trace("MulticastSocket: " + s);
         DatagramPacket packet;
         // Send a request optionally restricted to a cluster partition
         StringBuffer data = new StringBuffer("GET_ADDRESS");

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         while (nis.hasMoreElements()) {
            retval = new MulticastSocket(port);
            NetworkInterface networkInterface = nis.nextElement();
            retval.setNetworkInterface(networkInterface);
            try {
               retval.joinGroup(mcast_addr);
               String msg = "Successfully bind to " + networkInterface;
               okTrace.append(msg).append('\n');
            } catch (IOException e) {
               e.printStackTrace();
               String msg = "Failed to bind to " + networkInterface + ".";

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  @Test
  public void testPreferencesServerDiscovery() throws IOException,
      InterruptedException {
    MulticastSocket multicastSocket = new MulticastSocket(3351);
    InetAddress mcastaddr = InetAddress.getByName("233.252.1.32");
    multicastSocket.joinGroup(mcastaddr);
    multicastSocket.setSoTimeout(3000);
    String msg = "SRSIMSRV";
    multicastSocket.send(new DatagramPacket(msg.getBytes(), msg.length(),
        mcastaddr, 3351));
    DatagramPacket p = new DatagramPacket(new byte[23], 23);

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        MulticastSocket msocket = (MulticastSocket) socket;
        
        //log.info("Creating multicast socket on port: " + port + " on
        msocket.setLoopbackMode(loopbackMode);
        msocket.setTimeToLive(getTimeToLive());
        msocket.joinGroup(inetAddress);
    }


    protected DatagramSocket createSocket(int port) throws IOException {
        return new MulticastSocket(port);
    }

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        MulticastSocket msocket = (MulticastSocket) socket;
        
        //log.info("Creating multicast socket on port: " + port + " on
        msocket.setLoopbackMode(loopbackMode);
        msocket.setTimeToLive(getTimeToLive());
        msocket.joinGroup(inetAddress);
    }


    protected DatagramSocket createSocket(int port) throws IOException {
        return new MulticastSocket(port);
    }

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                ms.setSoTimeout(0);
                ms.setTimeToLive(TTL);
                if (!ms.getBroadcast()) {
                    ms.setBroadcast(true);
                }
                ms.joinGroup(ia);


                list.add(ms);


            } catch (Throwable e) {

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                ms.setSoTimeout(0);
                ms.setTimeToLive(TTL);
                if (!ms.getBroadcast()) {
                    ms.setBroadcast(true);
                }
                ms.joinGroup(ia);


                list.add(ms);


                log.debug(String.format("Created MulticastSocket for '%1$s:%2$s' on network adapter: %3$s", ia.getHostName(), port, ni));

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    InetAddress multicastAddress = InetAddress.getByName("239.255.255.250");
    final int port = 1900;
    MulticastSocket socket = new MulticastSocket(port);
    socket.setReuseAddress(true);
    socket.setSoTimeout(130000);
    socket.joinGroup(multicastAddress);
    byte[] requestMessage = DISCOVER_MESSAGE.getBytes("UTF-8");
    DatagramPacket datagramPacket = new DatagramPacket(requestMessage,
        requestMessage.length, multicastAddress, port);
    socket.send(datagramPacket);
    return socket;

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        /** Use a different port from Jini discovery */
        final short port = net.jini.discovery.Constants.discoveryPort + 1;
        final long endMillis = System.currentTimeMillis() + timeout;
        final MulticastSocket msocket = new MulticastSocket(port);
        msocket.setTimeToLive(1); // XXX - could it be 0 ?
        msocket.joinGroup(group);
        msocket.setSoTimeout(timeout);
        StringBuilder builder = new StringBuilder();
        builder.append(MulticastStatus.class.getName()).append(".ping(").append(System.currentTimeMillis()).append(")");
        final byte[] messageBytes = builder.toString().getBytes();
        DatagramPacket packet = new DatagramPacket(messageBytes, messageBytes.length, group, port);

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