Examples with MulticastSocket java.net.MulticastSocket used on opensource projects

Example 31 with MulticastSocket

use of java.net.MulticastSocket in project JAirPort by froks.

the class JmDNSImpl method send.

/**
     * Send an outgoing multicast DNS message.
     *
     * @param out
     * @exception IOException
     */
public void send(DNSOutgoing out) throws IOException {
    if (!out.isEmpty()) {
        byte[] message = out.data();
        final DatagramPacket packet = new DatagramPacket(message, message.length, _group, DNSConstants.MDNS_PORT);
        if (logger.isLoggable(Level.FINEST)) {
            try {
                final DNSIncoming msg = new DNSIncoming(packet);
                if (logger.isLoggable(Level.FINEST)) {
                    logger.finest("send(" + this.getName() + ") JmDNS out:" + msg.print(true));
                }
            } catch (final IOException e) {
                logger.throwing(getClass().toString(), "send(" + this.getName() + ") - JmDNS can not parse what it sends!!!", e);
            }
        }
        final MulticastSocket ms = _socket;
        if (ms != null && !ms.isClosed()) {
            ms.send(packet);
        }
    }
}

Example 32 with MulticastSocket

use of java.net.MulticastSocket in project hazelcast by hazelcast.

the class MulticastDiscoveryStrategy method initializeMulticastSocket.

private void initializeMulticastSocket() {
    try {
        int port = getOrDefault(MulticastProperties.PORT, DEFAULT_MULTICAST_PORT);
        PortValueValidator validator = new PortValueValidator();
        validator.validate(port);
        String group = getOrDefault(MulticastProperties.GROUP, DEFAULT_MULTICAST_GROUP);
        multicastSocket = new MulticastSocket(null);
        multicastSocket.bind(new InetSocketAddress(port));
        multicastSocket.setReuseAddress(true);
        multicastSocket.setTimeToLive(SOCKET_TIME_TO_LIVE);
        multicastSocket.setReceiveBufferSize(DATA_OUTPUT_BUFFER_SIZE);
        multicastSocket.setSendBufferSize(DATA_OUTPUT_BUFFER_SIZE);
        multicastSocket.setSoTimeout(SOCKET_TIMEOUT);
        multicastSocket.joinGroup(InetAddress.getByName(group));
        multicastDiscoverySender = new MulticastDiscoverySender(discoveryNode, multicastSocket, logger, group, port);
        multicastDiscoveryReceiver = new MulticastDiscoveryReceiver(multicastSocket, logger);
        if (discoveryNode != null) {
            isClient = false;
        }
    } catch (Exception e) {
        logger.finest(e.getMessage());
        rethrow(e);
    }
}

Example 33 with MulticastSocket

use of java.net.MulticastSocket in project tomcat by apache.

the class McastServiceImpl method setupSocket.

protected void setupSocket() throws IOException {
    if (mcastBindAddress != null) {
        try {
            log.info(sm.getString("mcastServiceImpl.bind", address, Integer.toString(port)));
            socket = new MulticastSocket(new InetSocketAddress(address, port));
        } catch (BindException e) {
            /*
                 * On some platforms (e.g. Linux) it is not possible to bind
                 * to the multicast address. In this case only bind to the
                 * port.
                 */
            log.info(sm.getString("mcastServiceImpl.bind.failed"));
            socket = new MulticastSocket(port);
        }
    } else {
        socket = new MulticastSocket(port);
    }
    //hint if we want disable loop back(local machine) messages
    socket.setLoopbackMode(localLoopbackDisabled);
    if (mcastBindAddress != null) {
        if (log.isInfoEnabled())
            log.info(sm.getString("mcastServiceImpl.setInterface", mcastBindAddress));
        socket.setInterface(mcastBindAddress);
    }
    //force a so timeout so that we don't block forever
    if (mcastSoTimeout <= 0)
        mcastSoTimeout = (int) sendFrequency;
    if (log.isInfoEnabled()) {
        log.info(sm.getString("mcastServiceImpl.setSoTimeout", Integer.toString(mcastSoTimeout)));
    }
    socket.setSoTimeout(mcastSoTimeout);
    if (mcastTTL >= 0) {
        if (log.isInfoEnabled())
            log.info(sm.getString("mcastServiceImpl.setTTL", Integer.toString(mcastTTL)));
        socket.setTimeToLive(mcastTTL);
    }
}

Example 34 with MulticastSocket

use of java.net.MulticastSocket in project jcollectd by collectd.

the class MBeanReceiver method setup.

private void setup() throws Exception {
    DatagramSocket socket = getSocket();
    if (socket instanceof MulticastSocket) {
        MulticastSocket mcast = (MulticastSocket) socket;
        System.err.println("Multicast interface=" + mcast.getInterface());
    }
    System.err.println(getListenAddress() + ":" + getPort() + " listening...");
    listen();
}

Example 35 with MulticastSocket

use of java.net.MulticastSocket in project jcollectd by collectd.

the class UdpSender method getMulticastSocket.

private MulticastSocket getMulticastSocket() throws IOException {
    if (_mcast == null) {
        _mcast = new MulticastSocket();
        _mcast.setTimeToLive(1);
    }
    return _mcast;
}