/*
	Program: 	ex10sender
	Date:		Febuary 06
	Version:	1
	Use:		to send a packet to a reciever
*/

import java.net.*;	// for network 
import java.util.*;	// for utilities
import java.io.*;	// for streams
import Command;

public class Sender
{

	public static void main(String[] argv)
	{
		try
		{
			InetAddress addr 	= InetAddress.getLocalHost();
			int sendPortNumber 	= 4000;
			int portNumber		= 3000;
			
			Command data = new Command("BUY","forks",10);

			byte[] buffer = data.toString().getBytes();

			// assume that machine and port to send to are in arg vector
			if (argv.length == 2)
			{
				try
				{
					addr = InetAddress.getByName(argv[0]);
					portNumber = Integer.parseInt(argv[1]);
				}
				catch (UnknownHostException uh)
				{
					addr = InetAddress.getLocalHost();
				}
			}

			// now create and send packet
			DatagramPacket packet =
				new DatagramPacket(buffer,buffer.length,addr,portNumber);	

			DatagramSocket socket = new DatagramSocket(sendPortNumber);

			System.out.println("ready to send on " +
								socket.getLocalAddress().toString() +
								" port: " + socket.getLocalPort());
			socket.send(packet);

			System.out.println("Packet data sent");

		}
		catch (UnknownHostException uh)
		{
			System.out.println("ERROR: " + uh);
			System.exit(0);
		}
		catch (IOException ioe)
		{
			System.out.println("ERROR: " + ioe);
		}
	}
}