Example usage for java.net DatagramSocket DatagramSocket

List of usage examples for java.net DatagramSocket DatagramSocket

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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:com.vuze.plugin.azVPN_PIA.Checker.java

private int handleUnboundOrLoopback(InetAddress bindIP, StringBuilder sReply) {

    int newStatusID = STATUS_ID_OK;

    InetAddress newBindIP = null;
    NetworkInterface newBindNetworkInterface = null;

    String s;/*w ww. j  a  va  2s.c  om*/

    if (bindIP.isAnyLocalAddress()) {
        addReply(sReply, CHAR_WARN, "pia.vuze.unbound");
    } else {
        addReply(sReply, CHAR_BAD, "pia.vuze.loopback");
    }

    try {
        NetworkAdmin networkAdmin = NetworkAdmin.getSingleton();

        // Find a bindable address that starts with 10.
        InetAddress[] bindableAddresses = networkAdmin.getBindableAddresses();

        for (InetAddress bindableAddress : bindableAddresses) {
            if (matchesVPNIP(bindableAddress)) {
                newBindIP = bindableAddress;
                newBindNetworkInterface = NetworkInterface.getByInetAddress(newBindIP);

                addReply(sReply, CHAR_GOOD, "pia.found.bindable.vpn", new String[] { "" + newBindIP });

                break;
            }
        }

        // Find a Network Interface that has an address that starts with 10.
        NetworkAdminNetworkInterface[] interfaces = networkAdmin.getInterfaces();

        boolean foundNIF = false;
        for (NetworkAdminNetworkInterface networkAdminInterface : interfaces) {
            NetworkAdminNetworkInterfaceAddress[] addresses = networkAdminInterface.getAddresses();
            for (NetworkAdminNetworkInterfaceAddress a : addresses) {
                InetAddress address = a.getAddress();
                if (address instanceof Inet4Address) {
                    if (matchesVPNIP(address)) {
                        s = texts.getLocalisedMessageText("pia.possible.vpn",
                                new String[] { "" + address, networkAdminInterface.getName() + " ("
                                        + networkAdminInterface.getDisplayName() + ")" });

                        if (newBindIP == null) {
                            foundNIF = true;
                            newBindIP = address;

                            // Either one should work
                            //newBindNetworkInterface = NetworkInterface.getByInetAddress(newBindIP);
                            newBindNetworkInterface = NetworkInterface
                                    .getByName(networkAdminInterface.getName());

                            s = CHAR_GOOD + " " + s + ". " + texts.getLocalisedMessageText("pia.assuming.vpn");
                        } else if (address.equals(newBindIP)) {
                            s = CHAR_GOOD + " " + s + ". " + texts.getLocalisedMessageText("pia.same.address");
                            foundNIF = true;
                        } else {
                            if (newStatusID != STATUS_ID_BAD) {
                                newStatusID = STATUS_ID_WARN;
                            }
                            s = CHAR_WARN + " " + s + ". "
                                    + texts.getLocalisedMessageText("pia.not.same.address");
                        }

                        addLiteralReply(sReply, s);

                        if (rebindNetworkInterface) {
                            // stops message below from being added, we'll rebind later
                            foundNIF = true;
                        }

                    }
                }
            }
        }

        if (!foundNIF) {
            addReply(sReply, CHAR_BAD, "pia.interface.not.found");
        }

        // Check if default routing goes through 10.*, by connecting to address
        // via socket.  Address doesn't need to be reachable, just routable.
        // This works on Windows, but on Mac returns a wildcard address
        DatagramSocket socket = new DatagramSocket();
        socket.connect(testSocketAddress, 0);
        InetAddress localAddress = socket.getLocalAddress();
        socket.close();

        if (!localAddress.isAnyLocalAddress()) {
            NetworkInterface networkInterface = NetworkInterface.getByInetAddress(localAddress);

            s = texts.getLocalisedMessageText("pia.nonvuze.probable.route",
                    new String[] { "" + localAddress, networkInterface == null ? "null"
                            : networkInterface.getName() + " (" + networkInterface.getDisplayName() + ")" });

            if ((localAddress instanceof Inet4Address) && matchesVPNIP(localAddress)) {

                if (newBindIP == null) {
                    newBindIP = localAddress;
                    newBindNetworkInterface = networkInterface;

                    s = CHAR_GOOD + " " + s + " " + texts.getLocalisedMessageText("pia.assuming.vpn");
                } else if (localAddress.equals(newBindIP)) {
                    s = CHAR_GOOD + " " + s + " " + texts.getLocalisedMessageText("pia.same.address");
                } else {
                    // Vuze not bound. We already found a boundable address, but it's not this one
                    /* Possibly good case:
                     * - Vuze: unbound
                     * - Found Bindable: 10.100.1.6
                     * - Default Routing: 10.255.1.1
                     * -> Split network
                     */
                    if (newStatusID != STATUS_ID_BAD) {
                        newStatusID = STATUS_ID_WARN;
                    }
                    s = CHAR_WARN + " " + s + " " + texts.getLocalisedMessageText("pia.not.same.future.address")
                            + " " + texts.getLocalisedMessageText("default.routing.not.vpn.network.splitting")
                            + " " + texts.getLocalisedMessageText(
                                    "default.routing.not.vpn.network.splitting.unbound");
                }

                addLiteralReply(sReply, s);

            } else {
                s = CHAR_WARN + " " + s;
                if (!bindIP.isLoopbackAddress()) {
                    s += " " + texts.getLocalisedMessageText("default.routing.not.vpn.network.splitting");
                }

                if (newBindIP == null && foundNIF) {
                    if (newStatusID != STATUS_ID_BAD) {
                        newStatusID = STATUS_ID_WARN;
                    }
                    s += " " + texts
                            .getLocalisedMessageText("default.routing.not.vpn.network.splitting.unbound");
                }

                addLiteralReply(sReply, s);
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
        addReply(sReply, CHAR_BAD, "pia.nat.error", new String[] { e.toString() });
    }

    if (newBindIP == null) {
        addReply(sReply, CHAR_BAD, "pia.vpn.ip.detect.fail");
        return STATUS_ID_BAD;
    }

    rebindNetworkInterface(newBindNetworkInterface, newBindIP, sReply);
    return newStatusID;
}

From source file:com.vuze.plugin.azVPN_Air.Checker.java

private int handleBound(InetAddress bindIP, StringBuilder sReply) {
    int newStatusID = STATUS_ID_OK;

    String s;//from  w  w  w.  ja  va 2  s.  c o  m
    boolean isGoodExistingBind = matchesVPNIP(bindIP);
    if (isGoodExistingBind) {
        String niName = "Unknown Interface";
        try {
            NetworkInterface networkInterface = NetworkInterface.getByInetAddress(bindIP);
            niName = networkInterface.getName() + " (" + networkInterface.getDisplayName() + ")";
        } catch (Throwable e) {
        }
        addReply(sReply, CHAR_GOOD, "airvpn.bound.good", new String[] { "" + bindIP, niName });
        vpnIP = bindIP;
    } else {
        addReply(sReply, CHAR_BAD, "airvpn.bound.bad", new String[] { "" + bindIP });
        newStatusID = STATUS_ID_BAD;
    }

    try {
        // Check if default routing goes through 10.*, by connecting to address
        // via socket.  Address doesn't need to be reachable, just routable.
        // This works on Windows (in some cases), but on Mac returns a wildcard 
        // address
        DatagramSocket socket = new DatagramSocket();
        socket.connect(testSocketAddress, 0);
        InetAddress localAddress = socket.getLocalAddress();
        socket.close();

        if (!localAddress.isAnyLocalAddress()) {
            NetworkInterface networkInterface = NetworkInterface.getByInetAddress(localAddress);

            s = texts.getLocalisedMessageText("airvpn.nonvuze.probable.route", new String[] { "" + localAddress,
                    networkInterface.getName() + " (" + networkInterface.getDisplayName() + ")" });
            char replyChar = ' ';

            if ((localAddress instanceof Inet4Address) && matchesVPNIP(localAddress)) {

                if (localAddress.equals(bindIP)) {
                    replyChar = isGoodExistingBind ? CHAR_GOOD : CHAR_WARN;
                    s += " " + texts.getLocalisedMessageText("airvpn.same.as.vuze");
                } else {
                    // Vuze is bound, default routing goes somewhere else
                    // This is ok, since Vuze will not accept incoming from "somewhere else"
                    // We'll warn, but not update the status id

                    replyChar = CHAR_WARN;
                    s += " " + texts.getLocalisedMessageText("airvpn.not.same");

                    if (isGoodExistingBind) {
                        s += " " + texts.getLocalisedMessageText("default.routing.not.vpn.network.splitting");
                    }
                }

                addLiteralReply(sReply, replyChar + " " + s);

                if (!isGoodExistingBind && rebindNetworkInterface) {
                    rebindNetworkInterface(networkInterface, localAddress, sReply);
                    // Should we redo test?
                }

            } else {
                // Vuze is bound, default routing goes to somewhere else.
                // Probably network splitting
                replyChar = isGoodExistingBind ? CHAR_WARN : CHAR_BAD;
                if (isGoodExistingBind) {
                    s += " " + texts.getLocalisedMessageText("default.routing.not.vpn.network.splitting");
                }
                addLiteralReply(sReply, replyChar + " " + s);
            }
        }
    } catch (Throwable t) {
        t.printStackTrace();
    }
    return newStatusID;
}

From source file:com.vuze.plugin.azVPN_Air.Checker.java

private int handleUnboundOrLoopback(InetAddress bindIP, StringBuilder sReply) {

    int newStatusID = STATUS_ID_OK;

    InetAddress newBindIP = null;
    NetworkInterface newBindNetworkInterface = null;

    String s;/*  w ww.j  av  a  2s  .com*/

    if (bindIP.isAnyLocalAddress()) {
        addReply(sReply, CHAR_WARN, "airvpn.vuze.unbound");
    } else {
        addReply(sReply, CHAR_BAD, "airvpn.vuze.loopback");
    }

    try {
        NetworkAdmin networkAdmin = NetworkAdmin.getSingleton();

        // Find a bindable address that starts with 10.
        InetAddress[] bindableAddresses = networkAdmin.getBindableAddresses();

        for (InetAddress bindableAddress : bindableAddresses) {
            if (matchesVPNIP(bindableAddress)) {
                newBindIP = bindableAddress;
                newBindNetworkInterface = NetworkInterface.getByInetAddress(newBindIP);

                addReply(sReply, CHAR_GOOD, "airvpn.found.bindable.vpn", new String[] { "" + newBindIP });

                break;
            }
        }

        // Find a Network Interface that has an address that starts with 10.
        NetworkAdminNetworkInterface[] interfaces = networkAdmin.getInterfaces();

        boolean foundNIF = false;
        for (NetworkAdminNetworkInterface networkAdminInterface : interfaces) {
            NetworkAdminNetworkInterfaceAddress[] addresses = networkAdminInterface.getAddresses();
            for (NetworkAdminNetworkInterfaceAddress a : addresses) {
                InetAddress address = a.getAddress();
                if (address instanceof Inet4Address) {
                    if (matchesVPNIP(address)) {
                        s = texts.getLocalisedMessageText("airvpn.possible.vpn",
                                new String[] { "" + address, networkAdminInterface.getName() + " ("
                                        + networkAdminInterface.getDisplayName() + ")" });

                        if (newBindIP == null) {
                            foundNIF = true;
                            newBindIP = address;

                            // Either one should work
                            //newBindNetworkInterface = NetworkInterface.getByInetAddress(newBindIP);
                            newBindNetworkInterface = NetworkInterface
                                    .getByName(networkAdminInterface.getName());

                            s = CHAR_GOOD + " " + s + ". "
                                    + texts.getLocalisedMessageText("airvpn.assuming.vpn");
                        } else if (address.equals(newBindIP)) {
                            s = CHAR_GOOD + " " + s + ". "
                                    + texts.getLocalisedMessageText("airvpn.same.address");
                            foundNIF = true;
                        } else {
                            if (newStatusID != STATUS_ID_BAD) {
                                newStatusID = STATUS_ID_WARN;
                            }
                            s = CHAR_WARN + " " + s + ". "
                                    + texts.getLocalisedMessageText("airvpn.not.same.address");
                        }

                        addLiteralReply(sReply, s);

                        if (rebindNetworkInterface) {
                            // stops message below from being added, we'll rebind later
                            foundNIF = true;
                        }

                    }
                }
            }
        }

        if (!foundNIF) {
            addReply(sReply, CHAR_BAD, "airvpn.interface.not.found");
        }

        // Check if default routing goes through 10.*, by connecting to address
        // via socket.  Address doesn't need to be reachable, just routable.
        // This works on Windows, but on Mac returns a wildcard address
        DatagramSocket socket = new DatagramSocket();
        socket.connect(testSocketAddress, 0);
        InetAddress localAddress = socket.getLocalAddress();
        socket.close();

        if (!localAddress.isAnyLocalAddress()) {
            NetworkInterface networkInterface = NetworkInterface.getByInetAddress(localAddress);

            s = texts.getLocalisedMessageText("airvpn.nonvuze.probable.route",
                    new String[] { "" + localAddress, networkInterface == null ? "null"
                            : networkInterface.getName() + " (" + networkInterface.getDisplayName() + ")" });

            if ((localAddress instanceof Inet4Address) && matchesVPNIP(localAddress)) {

                if (newBindIP == null) {
                    newBindIP = localAddress;
                    newBindNetworkInterface = networkInterface;

                    s = CHAR_GOOD + " " + s + " " + texts.getLocalisedMessageText("airvpn.assuming.vpn");
                } else if (localAddress.equals(newBindIP)) {
                    s = CHAR_GOOD + " " + s + " " + texts.getLocalisedMessageText("airvpn.same.address");
                } else {
                    // Vuze not bound. We already found a boundable address, but it's not this one
                    /* Possibly good case:
                     * - Vuze: unbound
                     * - Found Bindable: 10.100.1.6
                     * - Default Routing: 10.255.1.1
                     * -> Split network
                     */
                    if (newStatusID != STATUS_ID_BAD) {
                        newStatusID = STATUS_ID_WARN;
                    }
                    s = CHAR_WARN + " " + s + " "
                            + texts.getLocalisedMessageText("airvpn.not.same.future.address") + " "
                            + texts.getLocalisedMessageText("default.routing.not.vpn.network.splitting") + " "
                            + texts.getLocalisedMessageText(
                                    "default.routing.not.vpn.network.splitting.unbound");
                }

                addLiteralReply(sReply, s);

            } else {
                s = CHAR_WARN + " " + s;
                if (!bindIP.isLoopbackAddress()) {
                    s += " " + texts.getLocalisedMessageText("default.routing.not.vpn.network.splitting");
                }

                if (newBindIP == null && foundNIF) {
                    if (newStatusID != STATUS_ID_BAD) {
                        newStatusID = STATUS_ID_WARN;
                    }
                    s += " " + texts
                            .getLocalisedMessageText("default.routing.not.vpn.network.splitting.unbound");
                }

                addLiteralReply(sReply, s);
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
        addReply(sReply, CHAR_BAD, "airvpn.nat.error", new String[] { e.toString() });
    }

    if (newBindIP == null) {
        addReply(sReply, CHAR_BAD, "airvpn.vpn.ip.detect.fail");
        return STATUS_ID_BAD;
    }

    rebindNetworkInterface(newBindNetworkInterface, newBindIP, sReply);
    return newStatusID;
}

From source file:org.tinymediamanager.core.Utils.java

/**
 * Sends a wake-on-lan packet for specified MAC address across subnet
 * /*  w  w  w  . j  a v a 2s.  com*/
 * @param macAddr
 *          the mac address to 'wake up'
 */
public static final void sendWakeOnLanPacket(String macAddr) {
    // Broadcast IP address
    final String IP = "255.255.255.255";
    final int port = 7;

    try {
        final byte[] MACBYTE = new byte[6];
        final String[] hex = macAddr.split("(\\:|\\-)");

        for (int i = 0; i < 6; i++) {
            MACBYTE[i] = (byte) Integer.parseInt(hex[i], 16);
        }
        final byte[] bytes = new byte[6 + 16 * MACBYTE.length];
        for (int i = 0; i < 6; i++) {
            bytes[i] = (byte) 0xff;
        }
        for (int i = 6; i < bytes.length; i += MACBYTE.length) {
            System.arraycopy(MACBYTE, 0, bytes, i, MACBYTE.length);
        }

        // Send UDP packet here
        final InetAddress address = InetAddress.getByName(IP);
        final DatagramPacket packet = new DatagramPacket(bytes, bytes.length, address, port);
        final DatagramSocket socket = new DatagramSocket();
        socket.send(packet);
        socket.close();

        LOGGER.info("Sent WOL packet to " + macAddr);
    } catch (final Exception e) {
        LOGGER.error("Error sending WOL packet to " + macAddr, e);
    }
}

From source file:serverTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;/*from   www. jav a 2s  .com*/
    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;
}

From source file:vmTools.java

private String callOvnmanager(String node, String action) {
    String result = "";
    DatagramSocket socket = null;
    int serverPort = 9999;
    DatagramPacket packet2Send;//from  w w w.j a va 2  s. com
    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:com.mobiperf.measurements.RRCTask.java

/**
 * Sends a bunch of UDP packets of the size indicated and wait for the response.
 * //  w ww.  j a  va2  s.c o  m
 * Counts how long it takes for all the packets to return. PAckets are currently not labelled: the
 * total time is the time for the first packet to leave until the last packet arrives. AFter 7000
 * ms it is assumed packets are lost and the socket times out. In that case, the number of packets
 * lost is recorded.
 * 
 * @param serverAddr server to which to send the packets
 * @param size size of the packets
 * @param num number of packets to send
 * @param packetSize size of the packets sent
 * @param port port to send the packets to
 * @return first value: the amount of time to send all packets and get a response. second value:
 *         number of packets lost, on a timeout.
 * @throws IOException
 */
public static long[] sendMultiPackets(InetAddress serverAddr, int size, int num, int packetSize, int port)
        throws IOException {

    long startTime = 0;
    long endTime = 0;
    byte[] buf = new byte[size];
    byte[] rcvBuf = new byte[packetSize];
    long[] retval = { -1, -1 };
    long numLost = 0;
    int i = 0;
    long dataConsumedThisTask = 0;

    DatagramSocket socket = new DatagramSocket();
    DatagramPacket packetRcv = new DatagramPacket(rcvBuf, rcvBuf.length);
    DatagramPacket packet = new DatagramPacket(buf, buf.length, serverAddr, port);

    // number * (packet sent + packet received)
    dataConsumedThisTask += num * (size + packetSize);

    try {
        socket.setSoTimeout(7000);
        startTime = System.currentTimeMillis();
        Logger.d("Sending packet, waiting for response ");
        for (i = 0; i < num; i++) {
            socket.send(packet);
        }
        for (i = 0; i < num; i++) {
            socket.receive(packetRcv);
            if (i == 0) {

                endTime = System.currentTimeMillis();
            }
        }
    } catch (SocketTimeoutException e) {
        Logger.d("Timed out");
        numLost += (num - i);
        socket.close();
    }
    Logger.d("Sending complete: " + endTime);

    retval[0] = endTime - startTime;
    retval[1] = numLost;

    incrementData(dataConsumedThisTask);
    return retval;
}

From source file:com.mobiperf.measurements.RRCTask.java

/** 
 * Send a single packet of the size indicated and wait for a response.
 * /*  w w w.  j  av a2s. co m*/
 * After 7000 ms, time out and return a value of -1 (meaning no response). Otherwise, return the
 * time from when the packet was sent to when a response was returned by the echo server.
 * 
 * @param serverAddr Echo server to calculate round trip
 * @param size size of packet to send in bytes
 * @param rcvSize size of packets sent from the echo server
 * @param port where the echo server is listening
 * @return The round trip time for the packet
 * @throws IOException
 */
public static long sendPacket(InetAddress serverAddr, int size, int rcvSize, int port) throws IOException {
    long startTime = 0;
    byte[] buf = new byte[size];
    byte[] rcvBuf = new byte[rcvSize];
    long dataConsumedThisTask = 0;

    DatagramSocket socket = new DatagramSocket();
    DatagramPacket packetRcv = new DatagramPacket(rcvBuf, rcvBuf.length);

    dataConsumedThisTask += (size + rcvSize);

    DatagramPacket packet = new DatagramPacket(buf, buf.length, serverAddr, port);

    try {
        socket.setSoTimeout(7000);
        startTime = System.currentTimeMillis();
        Logger.d("Sending packet, waiting for response ");

        socket.send(packet);
        socket.receive(packetRcv);
    } catch (SocketTimeoutException e) {
        Logger.d("Timed out, trying again");
        socket.close();
        return -1;
    }
    long endTime = System.currentTimeMillis();
    Logger.d("Sending complete: " + endTime);
    incrementData(dataConsumedThisTask);
    return endTime - startTime;
}

From source file:com.mobilyzer.measurements.RRCTask.java

/**
 * Sends a bunch of UDP packets of the size indicated and wait for the response.
 * /* ww  w . j  a  v  a 2  s .  c o m*/
 * Counts how long it takes for all the packets to return. PAckets are currently not labelled: the
 * total time is the time for the first packet to leave until the last packet arrives. AFter 7000
 * ms it is assumed packets are lost and the socket times out. In that case, the number of packets
 * lost is recorded.
 * 
 * @param serverAddr server to which to send the packets
 * @param size size of the packets
 * @param num number of packets to send
 * @param packetSize size of the packets sent
 * @param port port to send the packets to
 * @return first value: the amount of time to send all packets and get a response. second value:
 *         number of packets lost, on a timeout.
 * @throws IOException
 */
public static long[] sendMultiPackets(InetAddress serverAddr, int size, int num, int packetSize, int port)
        throws IOException {

    long startTime = 0;
    long endTime = 0;
    byte[] buf = new byte[size];
    byte[] rcvBuf = new byte[packetSize];
    long[] retval = { -1, -1 };
    long numLost = 0;
    int i = 0;

    DatagramSocket socket = new DatagramSocket();
    DatagramPacket packetRcv = new DatagramPacket(rcvBuf, rcvBuf.length);
    DatagramPacket packet = new DatagramPacket(buf, buf.length, serverAddr, port);

    try {
        socket.setSoTimeout(7000);
        startTime = System.currentTimeMillis();
        Logger.d("Sending packet, waiting for response ");
        for (i = 0; i < num; i++) {
            socket.send(packet);
        }
        for (i = 0; i < num; i++) {
            socket.receive(packetRcv);
            if (i == 0) {

                endTime = System.currentTimeMillis();
            }
        }
    } catch (SocketTimeoutException e) {
        Logger.d("Timed out");
        numLost += (num - i);
        socket.close();
    }
    Logger.d("Sending complete: " + endTime);

    retval[0] = endTime - startTime;
    retval[1] = numLost;

    return retval;
}

From source file:com.mobilyzer.measurements.RRCTask.java

/**
 * Send a single packet of the size indicated and wait for a response.
 * /*  w  ww . j  a va2 s.co  m*/
 * After 7000 ms, time out and return a value of -1 (meaning no response). Otherwise, return the
 * time from when the packet was sent to when a response was returned by the echo server.
 * 
 * @param serverAddr Echo server to calculate round trip
 * @param size size of packet to send in bytes
 * @param rcvSize size of packets sent from the echo server
 * @param port where the echo server is listening
 * @return The round trip time for the packet
 * @throws IOException
 */
public static long sendPacket(InetAddress serverAddr, int size, int rcvSize, int port) throws IOException {
    long startTime = 0;
    byte[] buf = new byte[size];
    byte[] rcvBuf = new byte[rcvSize];

    DatagramSocket socket = new DatagramSocket();
    DatagramPacket packetRcv = new DatagramPacket(rcvBuf, rcvBuf.length);

    DatagramPacket packet = new DatagramPacket(buf, buf.length, serverAddr, port);

    try {
        socket.setSoTimeout(7000);
        startTime = System.currentTimeMillis();
        Logger.d("Sending packet, waiting for response ");

        socket.send(packet);
        socket.receive(packetRcv);
    } catch (SocketTimeoutException e) {
        Logger.d("Timed out, trying again");
        socket.close();
        return -1;
    }
    long endTime = System.currentTimeMillis();
    Logger.d("Sending complete: " + endTime);

    return endTime - startTime;
}