Example usage for java.net DatagramPacket getLength

Introduction

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

Prototype

public synchronized int getLength() 

Source Link

Document

Returns the length of the data to be sent or the length of the data received.

Usage

From source file:org.openhab.io.hueemulation.internal.HueEmulationUpnpServer.java

@Override
public void run() {
    MulticastSocket recvSocket = null;
    // since jupnp shares port 1900, lets use a different port to send UDP packets on just to be safe.
    DatagramSocket sendSocket = null;
    byte[] buf = new byte[1000];
    DatagramPacket recv = new DatagramPacket(buf, buf.length);
    while (running) {
        try {/*from   ww  w.j  av a  2 s . c om*/
            if (discoveryIp != null && discoveryIp.trim().length() > 0) {
                address = InetAddress.getByName(discoveryIp);
            } else {
                Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
                while (interfaces.hasMoreElements()) {
                    NetworkInterface ni = interfaces.nextElement();
                    Enumeration<InetAddress> addresses = ni.getInetAddresses();
                    while (addresses.hasMoreElements()) {
                        InetAddress addr = addresses.nextElement();
                        if (addr instanceof Inet4Address && !addr.isLoopbackAddress()) {
                            address = addr;
                            break;
                        }
                    }
                }
            }
            InetSocketAddress socketAddr = new InetSocketAddress(MULTI_ADDR, UPNP_PORT_RECV);
            recvSocket = new MulticastSocket(UPNP_PORT_RECV);
            recvSocket.joinGroup(socketAddr, NetworkInterface.getByInetAddress(address));
            sendSocket = new DatagramSocket();
            while (running) {
                recvSocket.receive(recv);
                if (recv.getLength() > 0) {
                    String data = new String(recv.getData());
                    logger.trace("Got SSDP Discovery packet from {}:{}", recv.getAddress().getHostAddress(),
                            recv.getPort());
                    if (data.startsWith("M-SEARCH")) {
                        String msg = String.format(discoString, "http://" + address.getHostAddress().toString()
                                + ":" + System.getProperty("org.osgi.service.http.port") + discoPath, usn);
                        DatagramPacket response = new DatagramPacket(msg.getBytes(), msg.length(),
                                recv.getAddress(), recv.getPort());
                        try {
                            logger.trace("Sending to {} : {}", recv.getAddress().getHostAddress(), msg);
                            sendSocket.send(response);
                        } catch (IOException e) {
                            logger.error("Could not send UPNP response", e);
                        }
                    }
                }
            }
        } catch (SocketException e) {
            logger.error("Socket error with UPNP server", e);
        } catch (IOException e) {
            logger.error("IO Error with UPNP server", e);
        } finally {
            IOUtils.closeQuietly(recvSocket);
            IOUtils.closeQuietly(sendSocket);
            if (running) {
                try {
                    Thread.sleep(3000);
                } catch (InterruptedException e) {
                }
            }
        }
    }
}

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From source file:snapshotTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;/*from www.  j a va  2s. c o m*/
    DatagramPacket receivedPacket;
    InetAddress theServerAddress;
    byte[] outBuffer;
    byte[] inBuffer;
    inBuffer = new byte[8192];
    outBuffer = new byte[8192];
    try {
        HttpSession session = RuntimeAccess.getInstance().getSession();
        String sessionUser = (String) session.getAttribute("User");
        if (sessionUser == null) {
            sessionUser = "administrator";
        }
        JSONObject joCmd = new JSONObject();
        JSONObject joAction = new JSONObject(action);
        joCmd.put("sender", sessionUser);
        joCmd.put("target", "SNAPSHOT");
        joCmd.put("node", node);
        joCmd.put("action", joAction);
        String output = joCmd.toString();

        socket = new DatagramSocket();
        String actionName = joAction.get("name").toString();
        if (actionName.equals("create")) {
            socket.setSoTimeout(180000);
        } else {
            socket.setSoTimeout(60000);
        }

        InetAddress serverInet = InetAddress.getByName("localhost");
        socket.connect(serverInet, serverPort);
        outBuffer = output.getBytes();
        packet2Send = new DatagramPacket(outBuffer, outBuffer.length, serverInet, serverPort);

        try {
            // send the data
            socket.send(packet2Send);
            receivedPacket = new DatagramPacket(inBuffer, inBuffer.length);
            socket.receive(receivedPacket);
            // the server response is...
            result = new String(receivedPacket.getData(), 0, receivedPacket.getLength());
            session.setAttribute("LastActive", System.currentTimeMillis());
        } catch (Exception excep) {
            String msg = excep.getMessage();
            //String msg = excep.toString();
            joCmd.remove("action");
            joAction.put("result", "Error:" + msg);
            joCmd.put("action", joAction);
            result = joCmd.toString();
        }
        socket.close();

    } catch (Exception e) {
        log(ERROR, "callOvnmanager", e);
        return e.toString();
    }
    return result;
}

---

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

@Test
public void verifySendWithAck() throws Exception {

    final List<Integer> openPorts = SocketUtils.findAvailableUdpSockets(SocketUtils.getRandomSeedPort(), 2);

    final int testPort = openPorts.get(0);
    final int ackPort = openPorts.get(1);

    byte[] buffer = new byte[1000];
    final DatagramPacket receivedPacket = new DatagramPacket(buffer, buffer.length);
    final CountDownLatch latch1 = new CountDownLatch(1);
    final CountDownLatch latch2 = new CountDownLatch(1);
    UnicastSendingMessageHandler handler = new UnicastSendingMessageHandler("localhost", testPort, true, true,
            "localhost", ackPort, 5000);
    handler.afterPropertiesSet();//from  w w  w .j a v a 2s .c o m
    Executors.newSingleThreadExecutor().execute(new Runnable() {
        public void run() {
            try {
                DatagramSocket socket = new DatagramSocket(testPort);
                latch1.countDown();
                socket.receive(receivedPacket);
                socket.close();
                DatagramPacketMessageMapper mapper = new DatagramPacketMessageMapper();
                mapper.setAcknowledge(true);
                mapper.setLengthCheck(true);
                Message<byte[]> message = mapper.toMessage(receivedPacket);
                Object id = message.getHeaders().get(IpHeaders.ACK_ID);
                byte[] ack = id.toString().getBytes();
                DatagramPacket ackPack = new DatagramPacket(ack, ack.length,
                        new InetSocketAddress("localHost", ackPort));
                DatagramSocket out = new DatagramSocket();
                out.send(ackPack);
                out.close();
                latch2.countDown();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
    latch1.await(3000, TimeUnit.MILLISECONDS);
    String payload = "foobar";
    handler.handleMessage(MessageBuilder.withPayload(payload).build());
    assertTrue(latch2.await(10000, TimeUnit.MILLISECONDS));
    byte[] src = receivedPacket.getData();
    int length = receivedPacket.getLength();
    int offset = receivedPacket.getOffset();
    byte[] dest = new byte[6];
    System.arraycopy(src, offset + length - 6, dest, 0, 6);
    assertEquals(payload, new String(dest));
    handler.shutDown();
}

---

From source file:vmXmlFile.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;//from   www . j  a  va2 s .c o  m
    DatagramPacket receivedPacket;
    InetAddress theServerAddress;
    byte[] outBuffer;
    byte[] inBuffer;
    inBuffer = new byte[65536];
    outBuffer = new byte[8192];

    try {
        HttpSession session = RuntimeAccess.getInstance().getSession();
        String sessionUser = (String) session.getAttribute("User");
        if (sessionUser == null) {
            sessionUser = "administrator";
        }
        JSONObject joCmd = new JSONObject();
        JSONObject joAction = new JSONObject(action);
        joCmd.put("sender", sessionUser);
        joCmd.put("target", "VM");
        joCmd.put("node", node);
        joCmd.put("action", joAction);
        String output = joCmd.toString();

        socket = new DatagramSocket();
        InetAddress serverInet = InetAddress.getByName("localhost");
        socket.connect(serverInet, serverPort);
        outBuffer = output.getBytes();
        packet2Send = new DatagramPacket(outBuffer, outBuffer.length, serverInet, serverPort);
        // send the data
        socket.send(packet2Send);

        receivedPacket = new DatagramPacket(inBuffer, inBuffer.length);
        socket.receive(receivedPacket);

        // the server response is...
        result = new String(receivedPacket.getData(), 0, receivedPacket.getLength());
        session.setAttribute("LastActive", System.currentTimeMillis());
        socket.close();

    } catch (Exception e) {
        log(ERROR, "callOvnmanager", e);
        return e.toString();
    }
    return result;
}

---

From source file:vmTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;/*from  www .  ja v a  2s .c  o  m*/
    DatagramPacket receivedPacket;
    InetAddress theServerAddress;
    byte[] outBuffer;
    byte[] inBuffer;
    inBuffer = new byte[65536];
    outBuffer = new byte[8192];
    /*
    if (this.user == null) {
    this.user = "admin";
    }*/

    try {
        HttpSession session = RuntimeAccess.getInstance().getSession();

        String sessionUser = (String) session.getAttribute("User");
        if (sessionUser == null) {
            sessionUser = "administrator";
        }

        JSONObject joCmd = new JSONObject();
        JSONObject joAction = new JSONObject(action);
        joCmd.put("sender", sessionUser);
        joCmd.put("target", "VM");
        joCmd.put("node", node);
        joCmd.put("action", joAction);
        String output = joCmd.toString();

        socket = new DatagramSocket();
        String actionName = joAction.get("name").toString();
        /*if (actionName.equals("migrate")) {
        socket.setSoTimeout(600000);
        } else {
        socket.setSoTimeout(60000);
        }*/
        socket.setSoTimeout(60000);

        InetAddress serverInet = InetAddress.getByName("localhost");
        socket.connect(serverInet, serverPort);
        outBuffer = output.getBytes();
        packet2Send = new DatagramPacket(outBuffer, outBuffer.length, serverInet, serverPort);

        try {
            // send the data
            socket.send(packet2Send);
            receivedPacket = new DatagramPacket(inBuffer, inBuffer.length);
            socket.receive(receivedPacket);
            // the server response is...
            result = new String(receivedPacket.getData(), 0, receivedPacket.getLength());
            session.setAttribute("LastActive", System.currentTimeMillis());
        } catch (Exception excep) {
            String msg = excep.getMessage();
            //String msg = excep.toString();
            joCmd.remove("action");
            joAction.put("result", "Error:" + msg);
            joCmd.put("action", joAction);
            result = joCmd.toString();
        }
        socket.close();

    } catch (Exception e) {
        log(ERROR, "callOvnmanager", e);
        return e.toString();
    }
    return result;
}

---

From source file:serverTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;//from   ww  w.ja  v a  2  s .  c  o m
    DatagramPacket receivedPacket;
    InetAddress theServerAddress;
    byte[] outBuffer;
    byte[] inBuffer;
    //inBuffer = new byte[8192];
    //outBuffer = new byte[8192];
    inBuffer = new byte[65536];
    outBuffer = new byte[8192];

    try {
        HttpSession session = RuntimeAccess.getInstance().getSession();
        String sessionUser = (String) session.getAttribute("User");
        if (sessionUser == null) {
            sessionUser = "administrator";
        }

        JSONObject joAction = new JSONObject(action);
        JSONObject joCmd = new JSONObject();
        joCmd.put("sender", sessionUser);
        joCmd.put("target", "NODE");
        joCmd.put("node", node);
        joCmd.put("action", joAction);
        String output = joCmd.toString();

        socket = new DatagramSocket();
        // set timeout
        String actionName = joAction.get("name").toString();
        if (actionName.equals("add")) {
            socket.setSoTimeout(90000);
        } else if (actionName.equals("connect")) {
            socket.setSoTimeout(60000);
        } else {
            socket.setSoTimeout(60000);
        }
        InetAddress serverInet = InetAddress.getByName("localhost");
        socket.connect(serverInet, serverPort);
        outBuffer = output.getBytes();
        packet2Send = new DatagramPacket(outBuffer, outBuffer.length, serverInet, serverPort);
        receivedPacket = new DatagramPacket(inBuffer, inBuffer.length);

        try {
            // send the data
            socket.send(packet2Send);
            // receive reply            
            socket.receive(receivedPacket);
            // the server reply is...
            result = new String(receivedPacket.getData(), 0, receivedPacket.getLength());
            session.setAttribute("LastActive", System.currentTimeMillis());
        } catch (Exception excep) {
            String msg = excep.getMessage();
            //String msg = excep.toString();
            joCmd.remove("action");
            joAction.put("result", "Error:" + msg);
            joCmd.put("action", joAction);
            result = joCmd.toString();
        }
        socket.close();

    } catch (Exception e) {
        log(ERROR, "callOvnmanager", e);
        return e.toString();
    }
    return result;
}

---

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