Example usage for java.net DatagramPacket getData

Introduction

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

Prototype

public synchronized byte[] getData()

Source Link

Document

Returns the data buffer.

Usage

From source file:MulticastClient.java

 public static void main(String[] args) throws IOException {

   MulticastSocket socket = new MulticastSocket(4446);
   InetAddress address = InetAddress.getByName("230.0.0.1");
   socket.joinGroup(address);//from  www .ja  v a  2 s . co  m

   DatagramPacket packet;

   // get a few quotes
   for (int i = 0; i < 5; i++) {

      byte[] buf = new byte[256];
      packet = new DatagramPacket(buf, buf.length);
      socket.receive(packet);

      String received = new String(packet.getData());
      System.out.println("Quote of the Moment: " + received);
   }

   socket.leaveGroup(address);
   socket.close();
}

From source file:ChatClient.java

  public static void main(String[] args) throws Exception {
  DatagramSocket s = new DatagramSocket();
  byte[] buf = new byte[1000];
  DatagramPacket dp = new DatagramPacket(buf, buf.length);

  InetAddress hostAddress = InetAddress.getByName("localhost");
  while (true) {/* w ww . ja v a 2 s . c  om*/
    BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
    String outMessage = stdin.readLine();

    if (outMessage.equals("bye"))
      break;
    String outString = "Client say: " + outMessage;
    buf = outString.getBytes();

    DatagramPacket out = new DatagramPacket(buf, buf.length, hostAddress, 9999);
    s.send(out);

    s.receive(dp);
    String rcvd = "rcvd from " + dp.getAddress() + ", " + dp.getPort() + ": "
        + new String(dp.getData(), 0, dp.getLength());
    System.out.println(rcvd);
  }
}

From source file:MulticastSniffer.java

public static void main(String[] args) {

    InetAddress ia = null;/*from  ww  w . j a v a  2 s .c  o  m*/
    byte[] buffer = new byte[65509];
    DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
    int port = 0;

    try {
        try {
            ia = InetAddress.getByName(args[0]);
        } catch (UnknownHostException e) {
            //
        }
        port = Integer.parseInt(args[1]);
    } // end try
    catch (Exception e) {
        System.err.println(e);
        System.err.println("Usage: java MulticastSniffer MulticastAddress port");
        System.exit(1);
    }

    try {
        MulticastSocket ms = new MulticastSocket(port);
        ms.joinGroup(ia);
        while (true) {
            ms.receive(dp);
            String s = new String(dp.getData(), 0, 0, dp.getLength());
            System.out.println(s);
        }
    } catch (SocketException se) {
        System.err.println(se);
    } catch (IOException ie) {
        System.err.println(ie);
    }

}

From source file:MulticastSniffer.java

public static void main(String[] args) {
    InetAddress ia = null;//w  w  w . j  a va2  s.c o m
    byte[] buffer = new byte[65535];
    DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
    int port = 0;

    // read the address from the command line
    try {
        try {
            ia = InetAddress.getByName(args[0]);
        } catch (UnknownHostException e) {
            System.err.println(e);
        }
        port = Integer.parseInt(args[1]);
    } catch (Exception e) {
        System.err.println(e);
        System.err.println("Usage: java MulticastSniffer mcast-addr port");
        System.exit(1);
    }
    System.out.println("About to join " + ia);

    try {
        MulticastSocket ms = new MulticastSocket(port);
        ms.joinGroup(ia);
        while (true) {
            System.out.println("About to receive...");
            ms.receive(dp);
            String s = new String(dp.getData(), 0, 0, dp.getLength());
            System.out.println(s);
        }
    } catch (SocketException se) {
        System.err.println(se);
    } catch (IOException ie) {
        System.err.println(ie);
    }
}

From source file:Main.java

public static void displayPacketDetails(DatagramPacket packet) {
    byte[] msgBuffer = packet.getData();
    int length = packet.getLength();
    int offset = packet.getOffset();

    int remotePort = packet.getPort();
    InetAddress remoteAddr = packet.getAddress();
    String msg = new String(msgBuffer, offset, length);

    System.out.println(//from   www  .  jav  a  2 s .  c  o m
            "Received a  packet:[IP Address=" + remoteAddr + ", port=" + remotePort + ", message=" + msg + "]");
}

From source file:Main.java

public static void displayPacketDetails(DatagramPacket packet) {
    byte[] msgBuffer = packet.getData();
    int length = packet.getLength();
    int offset = packet.getOffset();
    int remotePort = packet.getPort();
    InetAddress remoteAddr = packet.getAddress();
    String msg = new String(msgBuffer, offset, length);
    System.out.println("[Server at IP  Address=" + remoteAddr + ", port=" + remotePort + "]: " + msg);
}

From source file:org.openehealth.ipf.commons.ihe.core.atna.UdpServer.java

private static String packetToString(DatagramPacket packet) {
    return new String(packet.getData(), packet.getOffset(), packet.getLength());
}

From source file:SDRecord.java

private static byte[] basicFilter(DatagramPacket packet) {
    for (byte b : packet.getData())
        if (b != 0)
            return packet.getData();
    return null;//from w ww.java  2s .co  m
}

From source file:SDRecord.java

private static long recordToStdout(DatagramPacket packet) {
    System.out.write(packet.getData(), 0, packet.getLength());
    System.out.flush();//from   w  ww  .  j  a va  2s  .co  m
    return packet.getLength();
}

From source file:SDRecord.java

private static long recordToFile(DatagramPacket packet, OutputStream writer) {
    try {/*  w ww .j  a  v  a 2 s. c o m*/
        writer.write(packet.getData(), 0, packet.getLength());
        writer.flush();
    } catch (IOException e) {
        e.printStackTrace();
        System.exit(5);
    }
    return packet.getLength();
}