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(int port) throws SocketException 

Source Link

Document

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

Usage

From source file:org.apache.nifi.processors.standard.TestListenUDP.java

@Test
public void testWithSendingHostAndPortSameAsSender() throws IOException, InterruptedException {
    final String sendingHost = "localhost";
    final Integer sendingPort = 21001;
    runner.setProperty(ListenUDP.SENDING_HOST, sendingHost);
    runner.setProperty(ListenUDP.SENDING_HOST_PORT, String.valueOf(sendingPort));

    // bind to the same sending port that processor has for Sending Host Port
    final DatagramSocket socket = new DatagramSocket(sendingPort);

    final List<String> messages = getMessages(6);
    final int expectedQueued = messages.size();
    final int expectedTransferred = messages.size();

    run(socket, messages, expectedQueued, expectedTransferred);
    runner.assertAllFlowFilesTransferred(ListenUDP.REL_SUCCESS, messages.size());

    List<MockFlowFile> mockFlowFiles = runner.getFlowFilesForRelationship(ListenUDP.REL_SUCCESS);
    verifyFlowFiles(mockFlowFiles);//from w  w w  .  ja va2 s.  c  o  m
    verifyProvenance(expectedTransferred);
}

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From source file:net.spfbl.dnsbl.QueryDNSBL.java

/**
 * Configurao e intanciamento do servidor.
 * @throws java.net.SocketException se houver falha durante o bind.
 */// www. j av  a2s  . co  m
public QueryDNSBL(int port) throws SocketException {
    super("SERVERDNS");
    setPriority(Thread.NORM_PRIORITY);
    // Criando conexes.
    Server.logDebug("binding DNSBL socket on port " + port + "...");
    PORT = port;
    SERVER_SOCKET = new DatagramSocket(port);
}

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From source file:org.apache.nifi.processors.standard.TestListenUDP.java

@Test
public void testWithSendingHostAndPortDifferentThanSender() throws IOException, InterruptedException {
    final String sendingHost = "localhost";
    final Integer sendingPort = 21001;
    runner.setProperty(ListenUDP.SENDING_HOST, sendingHost);
    runner.setProperty(ListenUDP.SENDING_HOST_PORT, String.valueOf(sendingPort));

    // bind to a different sending port than the processor has for Sending Host Port
    final DatagramSocket socket = new DatagramSocket(21002);

    // no messages should come through since we are listening for 21001 and sending from 21002

    final List<String> messages = getMessages(6);
    final int expectedQueued = 0;
    final int expectedTransferred = 0;

    run(socket, messages, expectedQueued, expectedTransferred);
    runner.assertAllFlowFilesTransferred(ListenUDP.REL_SUCCESS, 0);
}

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From source file:org.psit.transwatcher.TransWatcher.java

private String connectAndGetCardIP() {
    DatagramSocket clientSocket = null, serverSocket = null;

    try {// w ww.j  a v  a 2  s .co m
        String broadcastIP = getBroadcastIP();
        setState(broadcastIP == null ? State.NO_WIFI : State.SEARCHING_CARD);
        notifyMessage("BroadcastIP: " + broadcastIP);

        // send out broadcast
        clientSocket = new DatagramSocket(58255);
        InetAddress IPAddress = InetAddress.getByName(broadcastIP);
        byte[] sendData = "".getBytes();
        DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 55777);
        clientSocket.send(sendPacket);
        clientSocket.close();

        serverSocket = new DatagramSocket(58255);
        byte[] receiveData = new byte[256];
        DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
        serverSocket.setSoTimeout(3000);
        serverSocket.receive(receivePacket);
        serverSocket.close();

        notifyMessage("Packet received: " + new String(receiveData));
        if (new String(receivePacket.getData()).indexOf("Transcend WiFiSD") >= 0)
            return receivePacket.getAddress().getHostAddress();
    } catch (Exception ex) {
        notifyMessage("Card handshake unsuccessful. ");
        notifyException(ex);
    } finally {
        if (clientSocket != null)
            clientSocket.close();
        if (serverSocket != null)
            serverSocket.close();
    }
    return null;
}

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From source file:net.mybox.mybox.Common.java

/**
 * Checks to see if a specific port is available.
 *
 * @param port the port to check for availability
 *///www  .j av  a 2s . c  o  m
public static boolean portAvailable(int port) {
    if (port < 0 || port > 65535) {
        throw new IllegalArgumentException("Invalid start port: " + port);
    }

    ServerSocket ss = null;
    DatagramSocket ds = null;
    try {
        ss = new ServerSocket(port);
        ss.setReuseAddress(true);
        ds = new DatagramSocket(port);
        ds.setReuseAddress(true);
        return true;
    } catch (IOException e) {
    } finally {
        if (ds != null) {
            ds.close();
        }

        if (ss != null) {
            try {
                ss.close();
            } catch (IOException e) {
                /* should not be thrown */
            }
        }
    }

    return false;
}

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From source file:com.clustercontrol.agent.Agent.java

/**
 * ??awakeAgent?//from   www.  j a  v  a2 s  . co m
 * Agent.properties???UDP?24005??????????(releaseLatch)
 * ????ReceiveTopic????Topic????
 */
public void waitAwakeAgent() {
    final int BUFSIZE = 1;

    byte[] buf = new byte[BUFSIZE];
    InetAddress cAddr; // ??IP
    int cPort; // ???
    DatagramSocket sock = null;
    boolean flag = true;
    int port = 24005;

    int awakeDelay = 1000;

    try {
        String awakeDelayStr = AgentProperties.getProperty("awake.delay", Integer.toString(1000));
        awakeDelay = Integer.parseInt(awakeDelayStr);
        m_log.info("awake.delay = " + awakeDelay + " msec");
    } catch (NumberFormatException e) {
        m_log.error("awake.delay", e);
    }

    while (true) {
        /*
         * UDP???flag?true??
         * ?????flag?false?????getTopic(releaseLatch)?
         * 
         * UDP???????getTopic????????
         * ??????
         */
        try {
            if (sock != null && port != awakePort) {
                sock.close();
                sock = null;
            }
            if (sock == null || !sock.isBound()) {
                port = awakePort;
                sock = new DatagramSocket(port);
                sock.setSoTimeout(awakeDelay);
            }
            DatagramPacket recvPacket = new DatagramPacket(buf, BUFSIZE);
            sock.receive(recvPacket);
            cAddr = recvPacket.getAddress();
            cPort = recvPacket.getPort();
            flag = true;
            m_log.info("waitAwakeAgent (" + cAddr.getHostAddress() + " onPort=" + cPort + ") buf.length="
                    + buf.length);
        } catch (SocketTimeoutException e) {
            if (flag) {
                m_log.info("waitAwakeAgent packet end");
                m_receiveTopic.releaseLatch();
                flag = false;
            }
        } catch (Exception e) {
            String msg = "waitAwakeAgent port=" + awakePort + ", " + e.getClass().getSimpleName() + ", "
                    + e.getMessage();
            if (e instanceof BindException) {
                m_log.warn(msg);
            } else {
                m_log.warn(msg, e);
            }
            try {
                Thread.sleep(60 * 1000);
            } catch (InterruptedException e1) {
                m_log.warn(e1, e1);
            }
        }
    }
}

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From source file:org.springframework.integration.ip.udp.UdpChannelAdapterTests.java

@Test
public void testUnicastReceiverException() throws Exception {
    SubscribableChannel channel = new DirectChannel();
    int port = SocketUtils.findAvailableUdpSocket();
    UnicastReceivingChannelAdapter adapter = new UnicastReceivingChannelAdapter(port);
    adapter.setOutputChannel(channel);/* www.j  a  v a 2s . co m*/
    //      SocketUtils.setLocalNicIfPossible(adapter);
    adapter.setOutputChannel(channel);
    ServiceActivatingHandler handler = new ServiceActivatingHandler(new FailingService());
    channel.subscribe(handler);
    QueueChannel errorChannel = new QueueChannel();
    adapter.setErrorChannel(errorChannel);
    adapter.start();
    SocketTestUtils.waitListening(adapter);

    Message<byte[]> message = MessageBuilder.withPayload("ABCD".getBytes()).build();
    DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper();
    DatagramPacket packet = mapper.fromMessage(message);
    packet.setSocketAddress(new InetSocketAddress("localhost", port));
    new DatagramSocket(SocketUtils.findAvailableUdpSocket()).send(packet);
    Message<?> receivedMessage = errorChannel.receive(2000);
    assertNotNull(receivedMessage);
    assertEquals("Failed", ((Exception) receivedMessage.getPayload()).getCause().getMessage());
}

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From source file:edu.hawaii.soest.kilonalu.adam.AdamDispatcher.java

/**
 * A method used to connect to the UDP port of the host that will have the 
 * UDP stream of data packets, and that will also connect each of the AdamSource
 * drivers to the DataTurbine./*w  ww . j a v a  2 s . c  o m*/
 */
protected boolean connect() {
    if (isConnected()) {
        return true;
    }

    try {
        // bind to the UDP socket
        this.datagramSocket = new DatagramSocket(getHostPort());

        // Create a list of sensors from the properties file, and iterate through
        // the list, creating an RBNB Source object for each sensor listed. Store
        // these objects in a HashMap for later referral.

        this.sourceMap = new HashMap<String, AdamSource>();

        List sensorList = this.xmlConfiguration.getList("sensor.address");

        // declare the properties that will be pulled from the 
        // sensor.properties.xml file
        String address = "";
        String sourceName = "";
        String cacheSize = "";
        String archiveSize = "";
        String archiveChannel = "";

        // evaluate each sensor listed in the sensor.properties.xml file
        for (Iterator sIterator = sensorList.iterator(); sIterator.hasNext();) {

            // get each property value of the sensor
            int index = sensorList.indexOf(sIterator.next());
            address = (String) this.xmlConfiguration.getProperty("sensor(" + index + ").address");
            sourceName = (String) this.xmlConfiguration.getProperty("sensor(" + index + ").name");
            cacheSize = (String) this.xmlConfiguration.getProperty("sensor(" + index + ").cacheSize");
            archiveSize = (String) this.xmlConfiguration.getProperty("sensor(" + index + ").archiveSize");

            // given the properties, create an RBNB Source object
            AdamSource adamSource = new AdamSource(this.serverName, (new Integer(this.serverPort)).toString(),
                    this.archiveMode, (new Integer(archiveSize).intValue()),
                    (new Integer(cacheSize).intValue()), sourceName);
            adamSource.startConnection();
            sourceMap.put(address, adamSource);

        }
        connected = true;

    } catch (SocketException se) {
        System.err.println(
                "Failed to connect to the UDP data stream. " + "The error message was: " + se.getMessage());

    }

    return connected;
}

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From source file:org.messic.service.MessicMain.java

/**
 * From apache camel Checks to see if a specific port is available.
 * //from  w w w  .  java  2s.c om
 * @param port the port to check for availability
 */
public static boolean isPortAvailable(int port) {
    ServerSocket ss = null;
    DatagramSocket ds = null;
    try {
        ss = new ServerSocket(port);
        ss.setReuseAddress(true);
        ds = new DatagramSocket(port);
        ds.setReuseAddress(true);
        return true;
    } catch (IOException e) {
    }

    finally {
        if (ds != null) {
            ds.close();
        }

        if (ss != null) {
            try {
                ss.close();
            } catch (IOException e) {
                /* should not be thrown */
            }
        }
    }

    return false;
}

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From source file:org.springframework.integration.ip.util.SocketUtils.java

public static int findAvailableUdpSocket(int seed) {
    for (int i = seed; i < seed + 200; i++) {
        try {/*from  w  ww  .j ava  2s . c  o m*/
            DatagramSocket sock = new DatagramSocket(i);
            sock.close();
            Thread.sleep(100);
            return i;
        } catch (Exception e) {
        }
    }
    throw new RuntimeException("Cannot find a free server socket");
}

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