/* =================================================================
 *
 *      discover host app
 *
 *
 * ================================================================= 
 * ####ECOSGPLCOPYRIGHTBEGIN####
 * -------------------------------------------
 * This file is part of eCos, the Embedded Configurable Operating
 * System.
 * Copyright (C) 2008 Free Software Foundation
 * 
 * eCos is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 or (at your option)
 * any later version.
 * 
 * eCos 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 for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with eCos; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 * 
 * As a special exception, if other files instantiate templates or
 * use macros or inline functions from this file, or you compile this
 * file and link it with other works to produce a work based on this
 * file, this file does not by itself cause the resulting work to be
 * covered by the GNU General Public License. However the source code
 * for this file must still be made available in accordance with
 * section (3) of the GNU General Public License.
 * 
 * This exception does not invalidate any other reasons why a work
 * based on this file might be covered by the GNU General Public
 * License.
 *
 * -------------------------------------------
 * ####ECOSGPLCOPYRIGHTEND####
 * =================================================================
 * #####DESCRIPTIONBEGIN####
 * 
 *  Author(s):    Oyvind Harboe oyvind.harboe@zylin.com
 *  Contributors: 
 *  Date:         2008-11-06
 *  Purpose:      
 *  Description:  
 *               
 * ####DESCRIPTIONEND####
 * 
 * =================================================================
 */

import java.net.DatagramPacket;
import java.net.DatagramSocket;

/* This is just an example app that listens for UDP packages on port 4950.
 * Modify it to your needs: GUI? Branding? Other port? Signed applet?
 * 
 * Use gcj to compile a native version:
 * 
 * 
 * $ gcj --main=DiscovereCos DiscovereCos.java
 * $ ./a.exe
 
 * 
 */
public class DiscovereCos
{
	public static void main(String args[])
	{
		try
		{
			int port = 4950;

			// Create a socket to listen on the port.
			DatagramSocket dsocket = new DatagramSocket(port);

			// Create a buffer to read datagrams into. If a
			// packet is larger than this buffer, the
			// excess will simply be discarded!
			byte[] buffer = new byte[2048];

			// Create a packet to receive data into the buffer
			DatagramPacket packet = new DatagramPacket(buffer, buffer.length);

			// Now loop forever, waiting to receive packets and printing them.
			while (true)
			{
				// Wait to receive a datagram
				dsocket.receive(packet);

				// Convert the contents to a string, and display them
				String msg = new String(buffer, 0, packet.getLength());
				System.out.println(packet.getAddress().getHostName() + ": "
						+ msg);

				// Reset the length of the packet before reusing it.
				packet.setLength(buffer.length);
			}
		} catch (Exception e)
		{
			System.err.println(e);
		}
	}
}