//   7/1/10   M. Brenner

import	java.io.*;


// To add a new type of Packet:
//
//  1) areate a new subclass of APacket
//  2) add another case in APacket.makepacket()
//

public class APacket extends Packet
{
	static public final int		PACKETMARK = 100;



	/**
	* Factory for creating packets given a data Channel
	*/
	public Packet
	makepacket (Channel channel)
	{
		int		type;

		Packet		packet;


		packet = null;
			try {
		type = channel.read();
//Log.print ("APacket.makepacket()  type: " + type);
		switch (type) {
		 case  PACKETMARK:
			packet = new Packetmark (channel);
			break;

		default:
//Log.print ("Apacket.makepacket()  not an app packet");
			packet = makepacket (type, channel);
			break;
		}
			}
			catch (IOException e) {
				Services.oops ("Packet.makepacket()", e);
			}

		return  packet;
	}


	public APacket() {}


	public
	APacket (int channelto)
	{
		super (channelto);
	}


	public
	APacket (Channel channel)
		throws IOException
	{
		super (channel);
	}


	public void
	docommand()
	{
	}


	public byte[]
	tobuffer()
	{
		return  new byte[0];
	}
}