package org.emulinker.net;

import java.net.*;
import java.nio.ByteBuffer;

import org.emulinker.util.*;

import org.apache.commons.logging.*;

public abstract class PrivateUDPServer extends UDPServer
{
	private static Log			log	= LogFactory.getLog(PrivateUDPServer.class);

	private InetAddress			remoteAddress;
	private InetSocketAddress	remoteSocketAddress;

	public PrivateUDPServer(boolean shutdownOnExit, InetAddress remoteAddress)
	{
		super(shutdownOnExit);
		this.remoteAddress = remoteAddress;
	}

	public InetAddress getRemoteInetAddress()
	{
		return remoteAddress;
	}

	public InetSocketAddress getRemoteSocketAddress()
	{
		return remoteSocketAddress;
	}

	protected void handleReceived(ByteBuffer buffer, InetSocketAddress inboundSocketAddress)
	{
		if (remoteSocketAddress == null)
			remoteSocketAddress = inboundSocketAddress;
		else if (!inboundSocketAddress.equals(remoteSocketAddress))
		{
			log.warn("Rejecting packet received from wrong address: " + EmuUtil.formatSocketAddress(inboundSocketAddress) + " != " + EmuUtil.formatSocketAddress(remoteSocketAddress));
			return;
		}

		handleReceived(buffer);
	}

	protected abstract void handleReceived(ByteBuffer buffer);

	protected void send(ByteBuffer buffer)
	{
		super.send(buffer, remoteSocketAddress);
	}
}