Example usage for java.net DatagramPacket DatagramPacket

Introduction

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

Prototype

public DatagramPacket(byte buf[], int length, InetAddress address, int port)

Source Link

Document

Constructs a datagram packet for sending packets of length length to the specified port number on the specified host.

Usage

From source file:Main.java

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

        int port = 80;

        DatagramSocket ds = new DatagramSocket(port);

        while (true) {
            byte buffer[] = new byte[BUFSIZE];

            DatagramPacket dp = new DatagramPacket(buffer, buffer.length, InetAddress.getByName("google.com"),
                    8080);

            ds.receive(dp);

            String str = new String(dp.getData());

            System.out.println(str);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:Main.java

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

    int port = 0;
    byte ttl = (byte) 1;

    InetAddress ia = InetAddress.getByName("127.0.0.1");

    byte[] data = "Here's some multicast data\r\n".getBytes();
    DatagramPacket dp = new DatagramPacket(data, data.length, ia, port);

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("java2s.com", 8080));
    ms.joinGroup(ia);/*w  w  w . j  av  a2 s  . c om*/
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);
    }
    ms.leaveGroup(ia);

    System.out.println(ms.getLoopbackMode());

    ms.close();
}

From source file:Main.java

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

    int port = 0;
    byte ttl = (byte) 1;

    InetAddress ia = InetAddress.getByName("127.0.0.1");

    byte[] data = "Here's some multicast data\r\n".getBytes();
    DatagramPacket dp = new DatagramPacket(data, data.length, ia, port);

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("java2s.com", 8080));
    ms.joinGroup(ia);/*from  w w  w.  j a v  a 2s  .c  om*/
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);
    }
    ms.leaveGroup(ia);

    System.out.println(ms.getNetworkInterface().getDisplayName());

    ms.close();
}

From source file:Main.java

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

    int port = 0;
    byte ttl = (byte) 1;

    InetAddress ia = InetAddress.getByName("127.0.0.1");

    byte[] data = "Here's some multicast data\r\n".getBytes();
    DatagramPacket dp = new DatagramPacket(data, data.length, ia, port);

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("java2s.com", 8080));
    ms.joinGroup(ia);//  ww w . java2s .c o  m
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);
    }
    ms.leaveGroup(ia);

    ia = ms.getInterface();
    System.out.println(ia);

    ms.close();
}

From source file:GetDate.java

public static void main(String args[]) throws Exception {
    byte msg[] = new byte[256];
    DatagramSocket dgSocket = new DatagramSocket();
    InetAddress destination = InetAddress.getByName("web.mit.edu");
    DatagramPacket datagram = new DatagramPacket(msg, msg.length, destination, PortDayTime);
    dgSocket.send(datagram);/*from  w w  w.  ja v  a 2s. com*/
    datagram = new DatagramPacket(msg, msg.length);
    dgSocket.receive(datagram);
    String received = new String(datagram.getData());
    System.out.println("The time in Cambridge is now: " + received);
    dgSocket.close();
}

From source file:Main.java

License:asdf

public static void main(String args[]) throws Exception {
    InetAddress ia = InetAddress.getByName(args[0]);
    int port = Integer.parseInt(args[1]);
    DatagramSocket ds = new DatagramSocket();
    while (true) {
        String s = "asdf";
        byte buffer[] = s.getBytes();
        DatagramPacket dp = new DatagramPacket(buffer, buffer.length, ia, port);
        ds.send(dp);/*from w  w  w .  j  a  v  a2s. com*/
    }
}

From source file:Main.java

public static void main(String args[]) throws IOException {
    String host = args[0];//  w  ww . ja  v a2s .  c om
    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:Main.java

public static void main(String args[]) {
    try {/*from w  w w .  ja v a 2s  .  com*/

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

        DatagramSocket ds = new DatagramSocket(InetSocketAddress.createUnresolved("google.com", 8080));

        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[]) {
    try {//w  w  w.  j  ava 2  s . co  m

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

        DatagramSocket ds = new DatagramSocket(8080, ia);

        byte buffer[] = "hello".getBytes();
        DatagramPacket dp = new DatagramPacket(buffer, buffer.length, ia, 80);
        ds.connect(InetSocketAddress.createUnresolved("google.com", 8080));

        DatagramChannel channel = ds.getChannel();

        ds.send(dp);
        ds.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:UDPSend.java

public static void main(String args[]) {
    try {/*from w  w  w .j  a  va  2 s. 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);
    }
}