Example usage for java.net DatagramSocket DatagramSocket

Introduction

In this page you can find the example usage for java.net DatagramSocket DatagramSocket.

Prototype

public DatagramSocket() throws SocketException 

Source Link

Document

Constructs a datagram socket and binds it to any available port on the local host machine.

Usage

From source file:easy.api.service.ComponentSocket.java

public String send() throws UnknownHostException, SocketException, IOException {
    String result = "";
    // create socket to IP
    final InetAddress inetAddress = InetAddress.getByName(this.ipAddress);
    byte[] base64String = Base64.decodeBase64(this.magicPacketBase64.getBytes());
    //byte[] base64String = Base64.decodeBase64(this.magicPacketBase64);
    DatagramPacket datagramPacket = new DatagramPacket(base64String, base64String.length, inetAddress,
            this.udpPort);
    try (DatagramSocket datagramSocket = new DatagramSocket()) {
        datagramSocket.send(datagramPacket);
        result += this.magicPacketBase64 + " send successfull!!\n";
    } catch (Exception e) {
        result += e.getMessage();/*from w  ww  .j a  va2  s. c  om*/
    }
    return result;
}

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From source file:org.apache.camel.component.netty.NettyUdpWithInOutUsingPlainSocketTest.java

private String sendAndReceiveUdpMessages(String input) throws Exception {
    DatagramSocket socket = new DatagramSocket();
    InetAddress address = InetAddress.getByName("127.0.0.1");

    // must append delimiter
    byte[] data = (input + "\n").getBytes();

    DatagramPacket packet = new DatagramPacket(data, data.length, address, PORT);
    LOG.debug("+++ Sending data +++");
    socket.send(packet);//ww  w.  ja v a2s.  c om

    Thread.sleep(1000);

    byte[] buf = new byte[128];
    DatagramPacket receive = new DatagramPacket(buf, buf.length, address, PORT);
    LOG.debug("+++ Receiving data +++");
    socket.receive(receive);

    socket.close();

    return new String(receive.getData(), 0, receive.getLength());
}

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From source file:com.t_oster.visicut.misc.Helper.java

public static List<String> findVisiCamInstances() {
    List<String> result = new LinkedList<String>();
    // Find the server using UDP broadcast
    try {//from   w  ww.ja  v a  2  s. co  m
        //Open a random port to send the package
        DatagramSocket c = new DatagramSocket();
        c.setBroadcast(true);

        byte[] sendData = "VisiCamDiscover".getBytes();

        //Try the 255.255.255.255 first
        try {
            DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length,
                    InetAddress.getByName("255.255.255.255"), 8888);
            c.send(sendPacket);
        } catch (Exception e) {
        }

        // Broadcast the message over all the network interfaces
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            NetworkInterface networkInterface = interfaces.nextElement();
            if (networkInterface.isLoopback() || !networkInterface.isUp()) {
                continue; // Don't want to broadcast to the loopback interface
            }
            for (InterfaceAddress interfaceAddress : networkInterface.getInterfaceAddresses()) {
                InetAddress broadcast = interfaceAddress.getBroadcast();
                if (broadcast == null) {
                    continue;
                }
                // Send the broadcast package!
                try {
                    DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, broadcast, 8888);
                    c.send(sendPacket);
                } catch (Exception e) {
                }
            }
        }
        //Wait for a response
        byte[] recvBuf = new byte[15000];
        c.setSoTimeout(3000);
        while (true) {
            DatagramPacket receivePacket = new DatagramPacket(recvBuf, recvBuf.length);
            try {
                c.receive(receivePacket);
                //Check if the message is correct
                String message = new String(receivePacket.getData()).trim();
                //Close the port!
                c.close();
                if (message.startsWith("http")) {
                    result.add(message);
                }
            } catch (SocketTimeoutException e) {
                break;
            }
        }
    } catch (IOException ex) {
    }
    return result;
}

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From source file:com.blueshift.mvpremote.MVPremoteActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);//from   w w w  . j  a  va2 s.c  o  m

    MyPagerAdapter adapter = new MyPagerAdapter();
    ViewPager myPager = (ViewPager) findViewById(R.id.mypanelpager);
    myPager.setAdapter(adapter);
    myPager.setCurrentItem(0);

    mPrefs = getPreferences(MODE_PRIVATE);

    hostname = mPrefs.getString("hostname", "192.168.1.255");

    try {
        s = new DatagramSocket();
        addr = InetAddress.getByName(hostname);
    } catch (SocketException e) {
        // TODO Auto-generated catch blck
        e.printStackTrace();
    } catch (UnknownHostException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

---

From source file:uk.co.ghosty.phonegap.plugins.WakeOnLan.java

@Override
public PluginResult execute(String action, JSONArray data, String callbackId) {
    // TODO Auto-generated method stub
    Log.d("WakeOnLan", "Calling plugin execute message");
    PluginResult result = null;//from   w w  w.j  ava2  s.  c o  m
    if (ACTION.equals(action)) {
        try {
            String macStr = data.getString(0);
            String ipStr = data.getString(1);

            byte[] macBytes = getMacBytes(macStr);
            byte[] bytes = new byte[6 + 16 * macBytes.length];

            for (int i = 0; i < 6; i++) {
                bytes[i] = (byte) 0xff;
            }
            for (int i = 6; i < bytes.length; i += macBytes.length) {
                System.arraycopy(macBytes, 0, bytes, i, macBytes.length);
            }

            InetAddress address = InetAddress.getByName(ipStr);
            DatagramPacket packet = new DatagramPacket(bytes, bytes.length, address, PORT);
            DatagramSocket socket = new DatagramSocket();
            socket.send(packet);
            socket.close();

            System.out.println("Wake-on-LAN packet sent.");
            result = new PluginResult(Status.OK, "Packet sent");
        } catch (Exception e) {
            result = new PluginResult(Status.IO_EXCEPTION);
            Log.e("WakeOnLan", "Exception thrown", e);
        }
    } else {
        result = new PluginResult(Status.INVALID_ACTION);
        Log.d("DirectoryListPlugin", "Invalid action : " + action + " passed");
    }
    return result;
}

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From source file:org.libreoffice.impressremote.communication.TcpServersFinder.java

private void setUpSearchSocket() {
    try {//www. jav a 2  s.c o  m
        mSearchSocket = new DatagramSocket();
        mSearchSocket.setSoTimeout((int) TimeUnit.SECONDS.toMillis(BLOCKING_TIMEOUT_IN_SECONDS));
    } catch (SocketException e) {
        throw new RuntimeException("Unable to open search socket.");
    }
}

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From source file:org.hyperic.util.ntp.NtpClient.java

public NtpResponse getResponse() throws SocketException, UnknownHostException, IOException {
    DatagramSocket socket = new DatagramSocket();
    socket.setSoTimeout(this.timeout);

    InetAddress address = InetAddress.getByName(this.hostname);
    byte[] data = NtpResponse.getRequestBytes();
    DatagramPacket packet = new DatagramPacket(data, data.length, address, this.port);
    socket.send(packet);//from  w  w  w.ja  va2 s.  c o  m

    packet = new DatagramPacket(data, data.length);
    socket.receive(packet);

    NtpResponse response = NtpResponse.decodeResponse(now(), packet.getData());
    return response;
}

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From source file:org.vesalainen.nmea.processor.SNTPBroadcaster.java

public SNTPBroadcaster(SntpBroadcasterType sntpBroadcasterType) throws SocketException, UnknownHostException {
    log.setLogger(this.getClass());
    int pollInterval = 6;
    Integer interval = sntpBroadcasterType.getPollInterval();
    if (interval != null) {
        pollInterval = interval;/*  w  w w . j a v  a2  s  .c  om*/
    }
    period = (long) Math.pow(2, pollInterval) * 1000;
    socket = new DatagramSocket();
    socket.setBroadcast(true);
    ntpMessage = new NtpV4Impl();
    ntpMessage.setMode(MODE_BROADCAST);
    ntpMessage.setPoll(pollInterval);
    ntpMessage.setPrecision(-6);
    ntpMessage.setStratum(1);
    ntpMessage.setReferenceId(ReferenceIdentifier.GPS);

}

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From source file:QuoteServerThread.java

QuoteServerThread() {
    super("QuoteServer");
    try {/* w w w. ja  v  a2s . co  m*/
        socket = new DatagramSocket();
        System.out.println("QuoteServer listening on port: " + socket.getLocalPort());
    } catch (java.io.IOException e) {
        System.err.println("Could not create datagram socket.");
    }
    this.openInputFile();
}

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From source file:com.neophob.sematrix.core.output.E1_31Device.java

/**
 * /*from  w w w  .  j a  va 2s.c  o  m*/
 * @param controller
 */
public E1_31Device(ApplicationConfigurationHelper ph, int nrOfScreens) {
    super(OutputDeviceEnum.E1_31, ph, 8, nrOfScreens);
    this.displayOptions = ph.getE131Device();

    //Get dmx specific config
    this.pixelsPerUniverse = ph.getE131PixelsPerUniverse();

    try {
        String ip = ph.getE131Ip();
        String sendMode = "Unicast";
        if (StringUtils.startsWith(ip, MULTICAST_START)) {
            this.sendMulticast = true;
            sendMode = "Multicast";
        }
        this.targetAdress = InetAddress.getByName(ip);
        this.firstUniverseId = ph.getE131StartUniverseId();
        calculateNrOfUniverse();
        packet = new DatagramPacket(new byte[0], 0, targetAdress, E1_31DataPacket.E131_PORT);
        dsocket = new DatagramSocket();

        this.initialized = true;

        LOG.log(Level.INFO, "E1.31 device initialized, send mode: " + sendMode + ", use "
                + this.displayOptions.size() + " panels");
    } catch (Exception e) {
        LOG.log(Level.WARNING, "failed to initialize E1.31 device", e);
    }
}

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