Example usage for java.nio.channels DatagramChannel bind

Introduction

In this page you can find the example usage for java.nio.channels DatagramChannel bind.

Prototype

public abstract DatagramChannel bind(SocketAddress local) throws IOException;

Source Link

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    DatagramChannel server = DatagramChannel.open();
    server.bind(null);
    NetworkInterface interf = NetworkInterface.getByName(MULTICAST_INTERFACE_NAME);
    server.setOption(StandardSocketOptions.IP_MULTICAST_IF, interf);

    String msg = "Hello!";
    ByteBuffer buffer = ByteBuffer.wrap(msg.getBytes());
    InetSocketAddress group = new InetSocketAddress(MULTICAST_IP, MULTICAST_PORT);

    server.send(buffer, group);/*from w  w w .j  a  v  a  2 s . co  m*/
    System.out.println("Sent the   multicast  message: " + msg);
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    DatagramChannel client = null;
    client = DatagramChannel.open();

    client.bind(null);

    String msg = "Hello";
    ByteBuffer buffer = ByteBuffer.wrap(msg.getBytes());
    InetSocketAddress serverAddress = new InetSocketAddress("localhost", 8989);

    client.send(buffer, serverAddress);/* ww  w  .j  av  a2s  .  c  om*/
    buffer.clear();
    client.receive(buffer);
    buffer.flip();
    int limits = buffer.limit();
    byte bytes[] = new byte[limits];
    buffer.get(bytes, 0, limits);
    String response = new String(bytes);
    System.out.println("Server  responded: " + response);
    client.close();
}

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From source file:Test.java

public static void main(String[] args) throws Exception {
    NetworkInterface networkInterface = NetworkInterface.getByName("net1");

    DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET);

    dc.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    dc.bind(new InetSocketAddress(8080));
    dc.setOption(StandardSocketOptions.IP_MULTICAST_IF, networkInterface);

    InetAddress group = InetAddress.getByName("180.90.4.12");
    MembershipKey key = dc.join(group, networkInterface);
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    DatagramChannel server = null;
    server = DatagramChannel.open();
    InetSocketAddress sAddr = new InetSocketAddress("localhost", 8989);
    server.bind(sAddr);
    ByteBuffer buffer = ByteBuffer.allocate(1024);

    while (true) {
        System.out.println("Waiting for a  message  from" + "  a  remote  host at " + sAddr);
        SocketAddress remoteAddr = server.receive(buffer);
        buffer.flip();//from  w w  w. j a va  2  s  . c  o m
        int limits = buffer.limit();
        byte bytes[] = new byte[limits];
        buffer.get(bytes, 0, limits);
        String msg = new String(bytes);

        System.out.println("Client at " + remoteAddr + "  says: " + msg);
        buffer.rewind();
        server.send(buffer, remoteAddr);
        buffer.clear();
    }
    //server.close();
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    MembershipKey key = null;//from   w  w w  . j a v  a2  s  .  co m
    DatagramChannel client = DatagramChannel.open(StandardProtocolFamily.INET);

    NetworkInterface interf = NetworkInterface.getByName(MULTICAST_INTERFACE_NAME);
    client.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    client.bind(new InetSocketAddress(MULTICAST_PORT));
    client.setOption(StandardSocketOptions.IP_MULTICAST_IF, interf);

    InetAddress group = InetAddress.getByName(MULTICAST_IP);
    key = client.join(group, interf);

    System.out.println("Joined the   multicast  group:" + key);
    System.out.println("Waiting for a  message  from  the" + "  multicast group....");

    ByteBuffer buffer = ByteBuffer.allocate(1048);
    client.receive(buffer);
    buffer.flip();
    int limits = buffer.limit();
    byte bytes[] = new byte[limits];
    buffer.get(bytes, 0, limits);
    String msg = new String(bytes);

    System.out.format("Multicast Message:%s%n", msg);
    key.drop();
}

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From source file:com.offbynull.portmapper.upnpigd.UpnpIgdDiscovery.java

private static Set<UpnpIgdDevice> scanForDevices(InetSocketAddress multicastSocketAddress,
        Set<InetAddress> localAddresses, String searchQuery) throws IOException, InterruptedException {

    final Set<UpnpIgdDevice> ret = Collections.synchronizedSet(new HashSet<UpnpIgdDevice>());
    final Map<Channel, InetAddress> bindMap = Collections.synchronizedMap(new HashMap<Channel, InetAddress>());

    UdpCommunicatorListener listener = new UdpCommunicatorListener() {

        @Override/*w ww  . ja va 2 s  .  co  m*/
        public void incomingPacket(InetSocketAddress sourceAddress, DatagramChannel channel,
                ByteBuffer packet) {
            byte[] inPacket = ByteBufferUtils.copyContentsToArray(packet);

            String inStr;
            try {
                inStr = new String(inPacket, 0, inPacket.length, "US-ASCII");
            } catch (UnsupportedEncodingException uee) {
                return;
            }

            Matcher matcher;

            URI url;
            if ((matcher = LOCATION_PATTERN.matcher(inStr)).find()) {
                String urlStr = matcher.group(1);
                try {
                    url = new URI(urlStr);
                } catch (URISyntaxException urise) {
                    return;
                }
            } else {
                return;
            }

            String name = null;
            if ((matcher = SERVER_PATTERN.matcher(inStr)).find()) {
                name = matcher.group(1);
            }

            InetAddress localAddress = bindMap.get(channel);

            UpnpIgdDevice device = new UpnpIgdDevice(localAddress, sourceAddress.getAddress(), name, url);
            ret.add(device);
        }
    };

    UdpCommunicator comm = null;
    try {
        List<DatagramChannel> channels = new ArrayList<>();

        for (InetAddress localAddr : localAddresses) {
            DatagramChannel channel = DatagramChannel.open();
            channel.configureBlocking(false);
            channel.bind(new InetSocketAddress(localAddr, 0));
            channels.add(channel);

            bindMap.put(channel, localAddr);
        }

        comm = new UdpCommunicator(channels);
        comm.startAsync().awaitRunning();
        comm.addListener(listener);

        ByteBuffer searchQueryBuffer = ByteBuffer.wrap(searchQuery.getBytes("US-ASCII")).asReadOnlyBuffer();
        for (int i = 0; i < 3; i++) {
            for (DatagramChannel channel : channels) {
                comm.send(channel, multicastSocketAddress, searchQueryBuffer.asReadOnlyBuffer());
            }

            Thread.sleep(TimeUnit.SECONDS.toMillis(MAX_WAIT + 1));
        }

        return new HashSet<>(ret);
    } finally {
        if (comm != null) {
            try {
                comm.stopAsync().awaitTerminated(); // this stop should handle closing all the datagram channels
            } catch (IllegalStateException ise) { // NOPMD
                // do nothing
            }
        }
    }
}

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From source file:org.apache.nifi.io.nio.ChannelListener.java

private DatagramChannel createAndBindDatagramChannel(final InetAddress nicIPAddress, final int port,
        final int receiveBufferSize) throws IOException {
    final DatagramChannel dChannel = DatagramChannel.open();
    dChannel.configureBlocking(false);/*from  w  ww .  ja  v a  2s . c om*/
    if (receiveBufferSize > 0) {
        dChannel.setOption(StandardSocketOptions.SO_RCVBUF, receiveBufferSize);
        final int actualReceiveBufSize = dChannel.getOption(StandardSocketOptions.SO_RCVBUF);
        if (actualReceiveBufSize < receiveBufferSize) {
            LOGGER.warn(this + " attempted to set UDP Receive Buffer Size to " + receiveBufferSize
                    + " bytes but could only set to " + actualReceiveBufSize
                    + "bytes. You may want to consider changing the Operating System's "
                    + "maximum receive buffer");
        }
    }
    dChannel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    dChannel.bind(new InetSocketAddress(nicIPAddress, port));
    return dChannel;
}

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From source file:org.mobicents.media.server.impl.rtcp.RtcpHandlerTest.java

@Test
public void testRtcpSend() throws IOException, InterruptedException {
    /* GIVEN *///w ww.  ja va 2  s  . c o  m
    SnifferChannel recvChannel = new SnifferChannel();
    recvChannel.open();
    recvChannel.bind(new InetSocketAddress("127.0.0.1", 0));

    DatagramChannel sendChannel = DatagramChannel.open();
    sendChannel.bind(new InetSocketAddress("127.0.0.1", 0));

    recvChannel.connect(sendChannel.getLocalAddress());
    sendChannel.connect(recvChannel.getLocalAddress());

    /* WHEN */
    handler.setChannel(sendChannel);
    handler.joinRtpSession();

    recvChannel.start();
    new Thread(recvChannel).start();
    Thread.sleep(15000);

    handler.leaveRtpSession();
    Thread.sleep(5000);
    recvChannel.stop();

    /* THEN */
    Assert.assertTrue(recvChannel.rxPackets > 0);
    Assert.assertTrue(recvChannel.rxOctets > 0);
    Assert.assertEquals(recvChannel.rxPackets, statistics.getRtcpPacketsSent());
    Assert.assertEquals(recvChannel.rxOctets, statistics.getRtcpOctetsSent());
}

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