Example usage for org.apache.commons.net.ntp NTPUDPClient NTPUDPClient

Introduction

In this page you can find the example usage for org.apache.commons.net.ntp NTPUDPClient NTPUDPClient.

Prototype

NTPUDPClient

Source Link

Usage

From source file:NTP_Example.java

public static void main(String[] args) {
    if (args.length == 0) {
        System.err.println("Usage: NTPClient <hostname-or-address-list>");
        System.exit(1);//  w  w  w . j av  a 2  s  .  co  m
    }

    NTPUDPClient client = new NTPUDPClient();
    // We want to timeout if a response takes longer than 10 seconds
    client.setDefaultTimeout(10000);
    try {
        client.open();
        for (String arg : args) {
            System.out.println();
            try {
                InetAddress hostAddr = InetAddress.getByName(arg);
                System.out.println("> " + hostAddr.getHostName() + "/" + hostAddr.getHostAddress());
                TimeInfo info = client.getTime(hostAddr);
                processResponse(info);
            } catch (IOException ioe) {
                ioe.printStackTrace();
            }
        }
    } catch (SocketException e) {
        e.printStackTrace();
    }

    client.close();
}

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From source file:de.pawlidi.openaletheia.utils.DateTimeUtils.java

public static long getCurrentTime() {
    try {/*from   w ww. j  a v a2  s . c  om*/
        NTPUDPClient timeClient = new NTPUDPClient();
        InetAddress inetAddress = InetAddress.getByName("time-c.nist.gov");
        TimeInfo timeInfo = timeClient.getTime(inetAddress);
        return timeInfo.getReturnTime();
    } catch (IOException e) {
        // TODO: handle exception
    }
    return -1;
}

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From source file:ch.lamacrypt.internal.network.NTP.java

/**
 * Returns the current Unix epoch (in milliseconds), obtained by polling the
 * following NTP server://from   www.ja  v  a  2s  .com
 * <ul>
 * <li>0.ch.pool.ntp.org</li>
 * <li>0.is.pool.ntp.org</li>
 *
 * </ul>
 * <p>
 * Waits up to 10 seconds to get a response
 *
 * @return current Unix epoch, in milliseconds
 */
public static long getTime() {
    NTPUDPClient client = new NTPUDPClient();
    client.setDefaultTimeout(10000);
    hosts[0] = "0.ch.pool.ntp.org";
    hosts[1] = "0.is.pool.ntp.org";
    boolean done = false;
    long epoch = 0;
    int i = 0;

    while (!done) {
        try {
            InetAddress hostAddr = InetAddress.getByName(hosts[i]);
            epoch = client.getTime(hostAddr).getReturnTime();
            done = true;
        } catch (IOException ex) {
            ErrorHandler.showError(ex);
        }
        i++;
    }

    client.close();
    return epoch;
}

---

From source file:com.fuensalida.utils.FechaExternaNTP.java

public static Date getNTPDateROA() {
    String servidor = "minuto.roa.es";
    //Se le da un valor nulo por defecto a la variable

    Date fechaRecibida = null;/*from   w ww.  ja  va2s. c o  m*/
    //Se crea un objeto de tipo NTPUDPClient Clase de la libreria Commons

    NTPUDPClient cliente = new NTPUDPClient();
    //Tiempo de Espera Antes De Mandar Error.

    cliente.setDefaultTimeout(5000);
    try {
        //Obtenemos la direccion IP por medio de el host previamente Asignado

        InetAddress hostAddr = InetAddress.getByName(servidor);
        //Solicitamos la fecha al servidor

        TimeInfo fecha = cliente.getTime(hostAddr);
        //Recibimos y convertimos la fecha a formato DATE

        fechaRecibida = new Date(fecha.getMessage().getTransmitTimeStamp().getTime());
    } catch (Exception e) {
        System.err.println("Error: " + e.getMessage());
    }
    //Cerramos la comunicacin con el cliente

    cliente.close();
    //Retornamos la fecha ya convertida si no es nula , de ser nula regresa la fecha Local

    return fechaRecibida == null ? new Date() : fechaRecibida;

}

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From source file:com.savoycraft.util.TimeUtil.java

/**
 * Queries a NIST time server to get a difference between its time and the
 * local system time.//  w w  w.  j  av  a2s  .  com
 */
public static void calibrate() {
    if (System.currentTimeMillis() < lastTimeRequest + 5000 || calibrated) {
        return;
    }

    NTPUDPClient timeClient = new NTPUDPClient();
    InetAddress inetAddress = null;
    try {
        inetAddress = InetAddress.getByName(TIME_SERVER);
    } catch (UnknownHostException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        return;
    }
    TimeInfo timeInfo = null;
    try {
        timeInfo = timeClient.getTime(inetAddress);
    } catch (IOException e) {
        System.err.println("SavoyCraft could not contact time.nist.gov.");
        e.printStackTrace();
        return;
    }
    long returnTime = timeInfo.getReturnTime();
    calibration = System.currentTimeMillis() - returnTime;
    System.out.println(calibration);
    // Date time = new Date(returnTime);
    // System.out.println("Time from " + TIME_SERVER + ": " + time);

    lastTimeRequest = System.currentTimeMillis();

    calibrated = true;
}

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From source file:be.fedict.trust.service.util.ClockDriftUtil.java

public static TimeInfo executeNTP(ClockDriftConfigEntity clockDriftConfig, final NetworkConfig networkConfig)
        throws IOException {

    LOG.debug("clock drift detection: " + clockDriftConfig.toString());

    final InetAddress ntpServerAddress = InetAddress.getByName(clockDriftConfig.getServer());

    TimeInfo timeInfo;//from w  w w.j av a2 s .  c o m
    NTPUDPClient client = new NTPUDPClient();
    client.setDefaultTimeout(clockDriftConfig.getTimeout());
    client.open();
    LOG.debug("NTP server: " + ntpServerAddress);
    timeInfo = client.getTime(ntpServerAddress);
    client.close();
    timeInfo.computeDetails();
    return timeInfo;
}

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From source file:de.tud.kitchen.android.NTPTimeReceiver.java

@Override
protected Void doInBackground(InetAddress... params) {
    NTPUDPClient client = new NTPUDPClient();
    client.setDefaultTimeout(10000);/* w w w  .  j  a v a  2s.c  o  m*/
    try {
        client.open();
    } catch (final SocketException se) {
        se.printStackTrace();
        return null;
    }
    while (!this.isCancelled()) {
        try {
            TimeInfo info = client.getTime(params[0]);
            info.computeDetails();
            Long offsetValue = info.getOffset();
            int receiverTimeDelta = (offsetValue == null) ? 0 : offsetValue.intValue();
            publishProgress(receiverTimeDelta);
        } catch (final IOException ioe) {
            ioe.printStackTrace();
            continue;
        }

        try {
            Thread.sleep(1000 * 60);
        } catch (InterruptedException e) {
            continue;
        }
    }
    client.close();
    return null;
}

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From source file:com.jforex.dzplugin.task.NTPTimeSynchTask.java

public NTPTimeSynchTask() {
    timeClient = new NTPUDPClient();
    init();
}

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From source file:edu.tcu.gaduo.ihe.iti.ct_transaction.service.NTPClient.java

public Date processResponse(String host) {

    TimeInfo info = null;//  w w  w  .  j a v a2  s.c  o m
    try {
        NTPUDPClient client = new NTPUDPClient();
        client.setDefaultTimeout(10000);
        client.open();
        InetAddress hostAddr = InetAddress.getByName(host);
        info = client.getTime(hostAddr);
        client.close();
    } catch (NullPointerException e) {
        logger.info(e.toString());
        return null;
    } catch (IOException e) {
        logger.info(e.toString());
        e.printStackTrace();
        return null;
    }

    message = info.getMessage();
    stratum = message.getStratum(); // 
    if (stratum <= 0)
        refType = "(??)";
    else if (stratum == 1)
        refType = "(??; e.g., GPS)"; // GPS, radio clock,
    else
        refType = "(??; e.g. via NTP or SNTP)";
    // stratum should be 0..15...
    logger.info(" Stratum: " + stratum + " " + refType);

    this.setRefNtpTime(message.getReferenceTimeStamp());

    // Originate Time is time request sent by client (t1)
    this.setOrigNtpTime(message.getOriginateTimeStamp());
    // Receive Time is time request received by server (t2)
    this.setRcvNtpTime(message.getReceiveTimeStamp());
    // Transmit time is time reply sent by server (t3)
    this.setXmitNtpTime(message.getTransmitTimeStamp());
    // Destination time is time reply received by client (t4)
    long destTime = info.getReturnTime();
    this.setDestNtpTime(TimeStamp.getNtpTime(destTime));

    info.computeDetails(); // compute offset/delay if not already done
    Long offsetValue = info.getOffset();
    Long delayValue = info.getDelay();
    this.setDelay(delay = (delayValue == null) ? "N/A" : delayValue.toString());
    this.setOffset((offsetValue == null) ? "N/A" : offsetValue.toString());

    Date Date = message.getReferenceTimeStamp().getDate();
    return Date;
}

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From source file:com.DSC.client.SecureChannel.java

/**
 * Gets the date time offset for the client using a NTP server
 * @throws IOException /*from  w ww .j  a  va 2 s  .  c o  m*/
 */
private static long getTimeOffset() throws IOException {
    NTPUDPClient timeClient = new NTPUDPClient();
    InetAddress inetAddress = InetAddress.getByName(NTP_SERVER);
    TimeInfo timeInfo = timeClient.getTime(inetAddress);
    return DateTimeUtils.currentTimeMillis() - timeInfo.getReturnTime();
}

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