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() 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:Main.java

public static void main(String args[]) {
    try {//from   ww  w .  j a va  2 s . c  o m

        InetAddress ia = InetAddress.getByName("www.java2s.com");

        DatagramSocket ds = new DatagramSocket();

        byte buffer[] = "hello".getBytes();
        DatagramPacket dp = new DatagramPacket(buffer, buffer.length, ia, 80);
        ds.connect(InetSocketAddress.createUnresolved("google.com", 80));
        ds.send(dp);
        ds.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String args[]) {
    try {// w  w  w  . j  a v a  2  s .  c  om

        InetAddress ia = InetAddress.getByName("www.java2s.com");

        DatagramSocket ds = new DatagramSocket();

        byte buffer[] = "hello".getBytes();
        DatagramPacket dp = new DatagramPacket(buffer, buffer.length, ia, 80);
        ds.connect(InetSocketAddress.createUnresolved("google.com", 8080));
        ds.send(dp);
        ds.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    DatagramSocket udpSocket = new DatagramSocket();
    String msg = null;// ww  w .j  a  va2 s. c om
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    System.out.print("Please enter a  message  (Bye  to quit):");
    while ((msg = br.readLine()) != null) {
        if (msg.equalsIgnoreCase("bye")) {
            break;
        }
        DatagramPacket packet = Main.getPacket(msg);
        udpSocket.send(packet);
        udpSocket.receive(packet);
        displayPacketDetails(packet);
        System.out.print("Please enter a  message  (Bye  to quit):");
    }
    udpSocket.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) {/*from   ww w .  ja va 2 s .  c o  m*/
    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:DatagramSender.java

public static void main(String args[]) throws Exception {
    InetAddress ia = InetAddress.getByName(args[0]);
    // Obtain destination port
    int port = Integer.parseInt(args[1]);
    // Create a datagram socket
    DatagramSocket ds = new DatagramSocket();
    // Create a datagram packet
    byte buffer[] = args[2].getBytes();
    DatagramPacket dp = new DatagramPacket(buffer, buffer.length, ia, port);
    ds.send(dp);//from   w  w w . j a  v a2s.  c o m
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    InetAddress dst = InetAddress.getLocalHost();
    int port = 8080;
    byte[] outbuf = new byte[1024];
    int len = 1024;

    DatagramPacket request = new DatagramPacket(outbuf, len, dst, port);
    DatagramSocket socket = new DatagramSocket();
    socket.send(request);/*  www. j a  va  2 s  .co  m*/
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    InetAddress server = InetAddress.getByName("localhost");
    BufferedReader userInput = new BufferedReader(new InputStreamReader(System.in));
    DatagramSocket theSocket = new DatagramSocket();
    while (true) {
        String theLine = userInput.readLine();
        if (theLine.equals("."))
            break;
        byte[] data = theLine.getBytes();
        DatagramPacket theOutput = new DatagramPacket(data, data.length, server, 99999);
        theSocket.send(theOutput);/*from  w w  w  .  j  ava2  s  .c o  m*/
    }

}

From source file:Main.java

public static void main(String args[]) throws IOException {
    String host = args[0];/*from   ww w . ja  va  2 s. c o m*/
    byte message[] = new byte[256];
    InetAddress address = InetAddress.getByName(host);
    System.out.println("Checking at: " + address);
    DatagramPacket packet = new DatagramPacket(message, message.length, address, DAYTIME_PORT);
    DatagramSocket socket = new DatagramSocket();
    socket.send(packet);
    packet = new DatagramPacket(message, message.length);
    socket.receive(packet);
    String time = new String(packet.getData());
    System.out.println(time);
    socket.close();
}

From source file:UDPSend.java

public static void main(String args[]) {
    try {/*from   www  .  j av  a  2s.  c  o  m*/
        String host = "www.java2s.com";
        int port = 90;

        byte[] message = "Java Source and Support".getBytes();

        // Get the internet address of the specified host
        InetAddress address = InetAddress.getByName(host);

        // Initialize a datagram packet with data and address
        DatagramPacket packet = new DatagramPacket(message, message.length, address, port);

        // Create a datagram socket, send the packet through it, close it.
        DatagramSocket dsocket = new DatagramSocket();
        dsocket.send(packet);
        dsocket.close();
    } catch (Exception e) {
        System.err.println(e);
    }
}

From source file:UdpEchoClient.java

public static void main(String[] args) {
    InetAddress address;// w ww.j  av a 2 s .c  om
    try {
        address = InetAddress.getByName(args[0]);
    } catch (UnknownHostException host) {
        System.out.println(host);
        return;
    }
    DatagramPacket pack = new DatagramPacket(testString.getBytes(), testString.length(), address, 7);
    DatagramPacket incoming = new DatagramPacket(new byte[256], 256);
    DatagramSocket sock = null;
    try {
        Calendar start, end;
        sock = new DatagramSocket();
        start = Calendar.getInstance();
        sock.send(pack);
        sock.setSoTimeout(5000);
        sock.receive(incoming);
        end = Calendar.getInstance();
        String reply = new String(incoming.getData());
        reply = reply.substring(0, testString.length());
        if (reply.equals(testString)) {
            System.out.println("Success");
            System.out.println("Time = " + (end.getTime().getTime() - start.getTime().getTime()) + "mS");
        } else
            System.out.println("Reply data did not match");
    } catch (SocketException socke) {
        System.out.println(socke);
    } catch (IOException ioe) {
        System.out.println(ioe);
    } finally {
        sock.close();
    }
}