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Nadron is a high speed socket based java game server written using Netty and Mike Rettig's Jetlang. It is specifically tuned for network based multiplayer games and supports TCP and UDP network protocols.

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package io.nadron.event.impl;

import io.nadron.app.Session;
import io.nadron.communication.MessageSender;
import io.nadron.communication.MessageSender.Fast;
import io.nadron.communication.MessageSender.Reliable;
import io.nadron.event.ConnectEvent;
import io.nadron.event.Event;
import io.nadron.event.Events;
import io.nadron.handlers.netty.LoginHandler;
import io.nadron.handlers.netty.UDPUpstreamHandler;

/**
 * This is a specific Event class with type {@link Events#CONNECT}. This class
 * is used by {@link LoginHandler} and {@link UDPUpstreamHandler} to create the
 * respective {@link MessageSender} (upd, or tcp), set it as the source of this
 * event and then forward it to the {@link Session}. Note Trying to reset
 * the event type of this class using {@link Event#setType(int)} will result in
 * an {@link UnsupportedOperationException}.
 * 
 * @author Abraham Menacherry
 * 
 */
public class DefaultConnectEvent extends DefaultEvent implements ConnectEvent
{
	private static final long serialVersionUID = 1L;

	protected Reliable tcpSender;
	protected Fast udpSender;

	public DefaultConnectEvent(Reliable tcpSender)
	{
		this(tcpSender, null);
	}

	public DefaultConnectEvent(Fast udpSender)
	{
		this(null, udpSender);
	}

	public DefaultConnectEvent(Reliable tcpSender, Fast udpSender)
	{
		this.tcpSender = tcpSender;
		this.udpSender = udpSender;
	}

	@Override
	public int getType()
	{
		return Events.CONNECT;
	}

	@Override
	public void setType(int type)
	{
		throw new UnsupportedOperationException(
				"Type field is final, it cannot be reset");
	}

	@Override
	public MessageSender getSource()
	{
		return tcpSender;
	}

	@Override
	public void setSource(Object source)
	{
		this.tcpSender = (Reliable) source;
	}

	public Reliable getTcpSender()
	{
		return tcpSender;
	}

	public void setTcpSender(Reliable tcpSender)
	{
		this.tcpSender = tcpSender;
	}

	public Fast getUdpSender()
	{
		return udpSender;
	}

	public void setUdpSender(Fast udpSender)
	{
		this.udpSender = udpSender;
	}
}