/*

 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.IOException;

import java.net.InetAddress;

import java.net.MulticastSocket;

import java.net.UnknownHostException;

public class ClientConnection {

    public final String IANA_JDP_ADDRESS = "224.0.23.178";

    public final String IANA_JDP_PORT = "7095";

    public final String UNDEFINED_NAME = "TheVMwithNoName";

    public final int port;

    public final InetAddress address;

    public final int pauseInSeconds;

    public final String instanceName;

    public ClientConnection()

            throws UnknownHostException {

        String discoveryAddress = System.getProperty("com.sun.management.jdp.address", IANA_JDP_ADDRESS);

        address = InetAddress.getByName(discoveryAddress);

        String discoveryPort = System.getProperty("com.sun.management.jdp.port", IANA_JDP_PORT);

        port = Integer.parseInt(discoveryPort);

        String pause = System.getProperty("com.sun.management.jdp.pause", "1");

        pauseInSeconds = Integer.parseUnsignedInt(pause);

        instanceName = System.getProperty("com.sun.management.jdp.name", UNDEFINED_NAME);

    }

    public MulticastSocket connectWithTimeout(int msTimeOut) throws IOException {

        MulticastSocket socket = new MulticastSocket(port);

        socket.joinGroup(address);

        socket.setSoTimeout(msTimeOut);

        return socket;

    }

}