Example usage for java.net InetAddress getByName

List of usage examples for java.net InetAddress getByName

  1. HOME
  2. Java
  3. java
  4. java.net.*
  5. InetAddress
  6. getByName

Introduction

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

Prototype

public static InetAddress getByName(String host) throws UnknownHostException

Source Link

Document

Determines the IP address of a host, given the host's name.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    int mcPort = 12345;
    String mcIPStr = "230.1.1.1";
    MulticastSocket mcSocket = null;
    InetAddress mcIPAddress = null;
    mcIPAddress = InetAddress.getByName(mcIPStr);
    mcSocket = new MulticastSocket(mcPort);
    System.out.println("Multicast Receiver running at:" + mcSocket.getLocalSocketAddress());
    mcSocket.joinGroup(mcIPAddress);// w  w  w.  j av  a 2 s. c o m

    DatagramPacket packet = new DatagramPacket(new byte[1024], 1024);

    System.out.println("Waiting for a  multicast message...");
    mcSocket.receive(packet);
    String msg = new String(packet.getData(), packet.getOffset(), packet.getLength());
    System.out.println("[Multicast  Receiver] Received:" + msg);

    mcSocket.leaveGroup(mcIPAddress);
    mcSocket.close();
}

From source file:Main.java

public static void main(String args[]) throws IOException {
    String host = args[0];/*from   www  .  j ava 2s . 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:UDPSend.java

public static void main(String args[]) {
    try {/*from www  .  ja v a2s  . 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: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  va2 s  .  co  m
    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

public static void main(String[] args) throws Exception {
    ServerSocket serverSocket = new ServerSocket(12900, 100, InetAddress.getByName("localhost"));
    System.out.println("Server started  at:  " + serverSocket);

    while (true) {
        System.out.println("Waiting for a  connection...");

        final Socket activeSocket = serverSocket.accept();

        System.out.println("Received a  connection from  " + activeSocket);
        Runnable runnable = () -> handleClientRequest(activeSocket);
        new Thread(runnable).start(); // start a new thread
    }/*from w  ww  .j av a2s.c om*/
}

From source file:lookForPorts3.java

public static void main(String[] args) {

    Socket theSocket;/* w  w  w  . j a  v  a  2  s .c  o  m*/
    String host = "localhost";

    if (args.length > 0) {
        host = args[0];
    }

    try {
        InetAddress theAddress = InetAddress.getByName(host);
        for (int i = 1; i <= 65535; i++) {
            try {
                theSocket = new Socket(host, i);
                System.out.println("There is a server on port " + i + " of " + host);
                theSocket.close();
            } catch (IOException e) {
                // must not be a server on this port
            }
        }
    } catch (UnknownHostException e) {
        System.err.println(e);
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int port = 0;
    byte ttl = (byte) 1;

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

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("google.com", 8080));
    ms.joinGroup(InetSocketAddress.createUnresolved("127.0.0.1", 8080), NetworkInterface.getByIndex(0));
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);/*from  ww  w  .ja  v a 2  s.  c o  m*/
    }
    ms.leaveGroup(InetAddress.getByName("google.com"));

    ms.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int port = 0;
    byte ttl = (byte) 1;

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

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("google.com", 8080));
    ms.joinGroup(InetSocketAddress.createUnresolved("127.0.0.1", 8080), NetworkInterface.getByIndex(0));
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);//from ww w  . j  a v a2 s  .  c  o  m
    }
    ms.setLoopbackMode(true);

    ms.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int port = 0;
    byte ttl = (byte) 1;

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

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("google.com", 8080));
    ms.joinGroup(InetSocketAddress.createUnresolved("127.0.0.1", 8080), NetworkInterface.getByIndex(0));
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);// w w w.  j  ava 2s. c  o  m
    }
    ms.setNetworkInterface(NetworkInterface.getByIndex(0));

    ms.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    int port = 0;
    byte ttl = (byte) 1;

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

    MulticastSocket ms = new MulticastSocket(InetSocketAddress.createUnresolved("google.com", 8080));
    ms.joinGroup(InetSocketAddress.createUnresolved("127.0.0.1", 8080), NetworkInterface.getByIndex(0));
    for (int i = 1; i < 10; i++) {
        ms.send(dp, ttl);//from   w ww  . j  ava  2 s. com
    }
    ms.setTimeToLive(1000);

    ms.close();
}