Example usage for java.net InetAddress getByName

List of usage examples for java.net InetAddress getByName

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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:MulticastSender.java

public static void main(String[] args) {

    InetAddress ia = null;//  w  w  w  .  j a va 2  s . co m
    int port = 0;
    String characters = "Here's some multicast data\n";
    byte[] data = new byte[characters.length()];

    // read the address from the command line
    try {
        try {
            ia = InetAddress.getByName(args[0]);
        } catch (UnknownHostException e) {
            //ia = InetAddressFactory.newInetAddress(args[0]);
        }
        port = Integer.parseInt(args[1]);
    } catch (Exception e) {
        System.err.println(e);
        System.err.println("Usage: java MulticastSender MulticastAddress port");
        System.exit(1);
    }

    characters.getBytes(0, characters.length(), data, 0);
    DatagramPacket dp = new DatagramPacket(data, data.length, ia, port);

    try {
        MulticastSocket ms = new MulticastSocket();
        ms.joinGroup(ia);
        for (int i = 1; i < 10; i++) {
            ms.send(dp, (byte) 1);
        }
        ms.leaveGroup(ia);
        ms.close();
    } catch (SocketException se) {
        System.err.println(se);
    } catch (IOException ie) {
        System.err.println(ie);
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    byte[] ary = new byte[128];
    DatagramPacket pack = new DatagramPacket(ary, 128);

    // read//ww  w. ja  v  a2 s.  c  o  m
    DatagramSocket sock = new DatagramSocket(1111);
    sock.receive(pack);
    String word = new String(pack.getData());
    System.out.println("From: " + pack.getAddress() + " Port: " + pack.getPort());
    System.out.println(word);
    sock.close();
    // write
    sock = new DatagramSocket();
    pack.setAddress(InetAddress.getByName(args[1]));
    pack.setData(args[2].getBytes());
    pack.setPort(1111);
    sock.send(pack);
    sock.close();

}

From source file:Test.java

public static void main(String[] args) throws Exception {
    NetworkInterface networkInterface = NetworkInterface.getByName("net1");

    DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET);

    dc.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    dc.bind(new InetSocketAddress(8080));
    dc.setOption(StandardSocketOptions.IP_MULTICAST_IF, networkInterface);

    InetAddress group = InetAddress.getByName("180.90.4.12");
    MembershipKey key = dc.join(group, networkInterface);
}

From source file:MulticastSniffer.java

public static void main(String[] args) {
    InetAddress ia = null;/*from w  ww  .j  a  v  a  2s.c om*/
    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:UDP0.java

public static void main(String[] args) throws Exception {
    byte[] ary = new byte[128];
    DatagramPacket pack = new DatagramPacket(ary, 128);
    if (args[0].charAt(0) == 'r') {
        // read//from w  ww  . j  av  a2 s . c  o  m
        DatagramSocket sock = new DatagramSocket(1111);
        sock.receive(pack);
        String word = new String(pack.getData());
        System.out.println("From: " + pack.getAddress() + " Port: " + pack.getPort());
        System.out.println(word);
        sock.close();
    } else { // write
        DatagramSocket sock = new DatagramSocket();
        pack.setAddress(InetAddress.getByName(args[1]));
        pack.setData(args[2].getBytes());
        pack.setPort(1111);
        sock.send(pack);
        sock.close();
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    MembershipKey key = null;//from   ww  w  .j a  v a  2  s.  c o  m
    DatagramChannel client = DatagramChannel.open(StandardProtocolFamily.INET);

    NetworkInterface interf = NetworkInterface.getByName(MULTICAST_INTERFACE_NAME);
    client.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    client.bind(new InetSocketAddress(MULTICAST_PORT));
    client.setOption(StandardSocketOptions.IP_MULTICAST_IF, interf);

    InetAddress group = InetAddress.getByName(MULTICAST_IP);
    key = client.join(group, interf);

    System.out.println("Joined the   multicast  group:" + key);
    System.out.println("Waiting for a  message  from  the" + "  multicast group....");

    ByteBuffer buffer = ByteBuffer.allocate(1048);
    client.receive(buffer);
    buffer.flip();
    int limits = buffer.limit();
    byte bytes[] = new byte[limits];
    buffer.get(bytes, 0, limits);
    String msg = new String(bytes);

    System.out.format("Multicast Message:%s%n", msg);
    key.drop();
}

From source file:be.error.rpi.test.UdpTest.java

public static void main(String[] args) throws Exception {
    final InetAddress IPAddress = InetAddress.getByName("192.168.0.10");
    final DatagramSocket clientSocket = new DatagramSocket();

    new Thread() {
        @Override//from   w w w. java  2s . c o  m
        public void run() {
            try {
                while (true) {
                    String s = "0:0:0:";
                    DatagramPacket sendPacket = new DatagramPacket(s.getBytes(), s.getBytes().length, IPAddress,
                            8000);
                    clientSocket.send(sendPacket);
                    Thread.sleep(100);
                }
            } catch (Exception e) {

            }
        }
    }.start();

    new Thread() {
        @Override
        public void run() {
            try {
                while (true) {
                    String s = "1:1:1:";
                    DatagramPacket sendPacket = new DatagramPacket(s.getBytes(), s.getBytes().length, IPAddress,
                            8000);
                    clientSocket.send(sendPacket);
                    Thread.sleep(100);
                }
            } catch (Exception e) {

            }
        }
    }.start();

}

From source file:com.googlecode.shutdownlistener.ShutdownUtility.java

public static void main(String[] args) throws Exception {
    final ShutdownConfiguration config = ShutdownConfiguration.getInstance();

    final String command;
    if (args.length > 0) {
        command = args[0];/* w w  w  . jav a  2 s  . c o  m*/
    } else {
        command = config.getStatusCommand();
    }

    System.out.println("Calling " + config.getHost() + ":" + config.getPort() + " with command: " + command);

    final InetAddress hostAddress = InetAddress.getByName(config.getHost());
    final Socket shutdownConnection = new Socket(hostAddress, config.getPort());
    try {
        shutdownConnection.setSoTimeout(5000);
        final BufferedReader reader = new BufferedReader(
                new InputStreamReader(shutdownConnection.getInputStream()));
        final PrintStream writer = new PrintStream(shutdownConnection.getOutputStream());
        try {
            writer.println(command);
            writer.flush();

            while (true) {
                final String line = reader.readLine();
                if (line == null) {
                    break;
                }

                System.out.println(line);
            }
        } finally {
            IOUtils.closeQuietly(reader);
            IOUtils.closeQuietly(writer);
        }
    } finally {
        try {
            shutdownConnection.close();
        } catch (IOException ioe) {
        }
    }

}

From source file:examples.fwhois.java

public static final void main(String[] args) {
    int index;//from w w  w .  j  a v  a2 s .c o m
    String handle, host;
    InetAddress address = null;
    WhoisClient whois;

    if (args.length != 1) {
        System.err.println("usage: fwhois handle[@<server>]");
        System.exit(1);
    }

    index = args[0].lastIndexOf("@");

    whois = new WhoisClient();
    // We want to timeout if a response takes longer than 60 seconds
    whois.setDefaultTimeout(60000);

    if (index == -1) {
        handle = args[0];
        host = WhoisClient.DEFAULT_HOST;
    } else {
        handle = args[0].substring(0, index);
        host = args[0].substring(index + 1);
    }

    try {
        address = InetAddress.getByName(host);
    } catch (UnknownHostException e) {
        System.err.println("Error unknown host: " + e.getMessage());
        System.exit(1);
    }

    System.out.println("[" + address.getHostName() + "]");

    try {
        whois.connect(address);
        System.out.print(whois.query(handle));
        whois.disconnect();
    } catch (IOException e) {
        System.err.println("Error I/O exception: " + e.getMessage());
        System.exit(1);
    }
}

From source file:examples.unix.fwhois.java

public static void main(String[] args) {
    int index;//from  ww w  . j a  v a 2  s  .c  om
    String handle, host;
    InetAddress address = null;
    WhoisClient whois;

    if (args.length != 1) {
        System.err.println("usage: fwhois handle[@<server>]");
        System.exit(1);
    }

    index = args[0].lastIndexOf("@");

    whois = new WhoisClient();
    // We want to timeout if a response takes longer than 60 seconds
    whois.setDefaultTimeout(60000);

    if (index == -1) {
        handle = args[0];
        host = WhoisClient.DEFAULT_HOST;
    } else {
        handle = args[0].substring(0, index);
        host = args[0].substring(index + 1);
    }

    try {
        address = InetAddress.getByName(host);
        System.out.println("[" + address.getHostName() + "]");
    } catch (UnknownHostException e) {
        System.err.println("Error unknown host: " + e.getMessage());
        System.exit(1);
    }

    try {
        whois.connect(address);
        System.out.print(whois.query(handle));
        whois.disconnect();
    } catch (IOException e) {
        System.err.println("Error I/O exception: " + e.getMessage());
        System.exit(1);
    }
}