/*
** Objektorienteeritud programmeerimine - datagrammiklient.
**
** NB! Tegemist on õppeotstarbelise näitega, mis ei ole 
** mõeldud reaalses elus kasutamiseks.
**
** @author	Gunnar Kudrjavets [gk@aprote.ee]
** @version	0.1, 13.04.1999
** @since	JDK 1.0
*/

import java.io.*;
import java.net.*;

public class HeartBeat extends java.applet.Applet {
	String strHost;
	int iPort;

	public void init() {
		strHost = getCodeBase().getHost();
		iPort = Integer.parseInt(getParameter("Port"));
		sendMessage("Init.");
	}

	private void sendMessage(String strMessage) {
		try {
			byte[] data = new byte[strMessage.length()];
			strMessage.getBytes(0, data.length, data, 0);
			InetAddress addr = InetAddress.getByName(strHost);
			DatagramPacket pack = new DatagramPacket(data, data.length, addr, iPort);
			DatagramSocket ds = new DatagramSocket();
			ds.send(pack);
			ds.close();
		}
		catch (IOException e) {
			System.out.println("I/O error: " + e);
		}
	}

	public void start() {
		sendMessage("Arrived.");
	}

	public void stop() {
		sendMessage("Departed.");
	}
}