Connecting players to another BungeeCord server with PluginMessage

Bungee.java

package pl.themolka.bungee;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import org.bukkit.Bukkit
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.java.JavaPlugin;

import pl.themolka.bungee.PlayerChangeServerEvent;

/**
 * author TheMolkaPL
 */
public class BungeeConnector extends JavaPlugin {
	
	private static Plugin instance;
	
	public void onEnable() {
		instance = this;
		getServer().getMessenger().registerOutgoingPluginChannel(this, "BungeeCord");
	}
	
	/**
	 * Connects a player to a server
	 * 
	 * @author TheMolkaPL
	 * 
	 * @param player Player which you want to connect
	 * @param serverName Server's name to display in the message
	 * @param serverAddress Server's BungeeCord address to connect
	 */
	public static void connect(Player player, String serverName, String serverAddress) {
		PlayerChangeServerEvent event = new PlayerChangeServerEvent(player, serverName, serverAddress);
		Bukkit.getPluginManager().callEvent(event);
		
		if(!event.isCancelled()) {
			ByteArrayOutputStream b = new ByteArrayOutputStream();
			DataOutputStream out = new DataOutputStream(b);
			
			if(event.getMessage() != null) {
				player.sendMessage(event.getMessage());
			}
			
			try {
				out.writeUTF("Connect");
				out.writeUTF(event.getServerAddress());
			} catch(IOException ex) {}
			Bukkit.getLogger().info("Connecting " + player.getName() + " to " + serverName + "...");
			player.sendPluginMessage(instance, "BungeeCord", b.toByteArray());
		}
	}
	
}

PlayerChangeServerEvent.java

package pl.themolka.bungee;

import org.bukkit.ChatColor;
import org.bukkit.entity.Player;
import org.bukkit.event.Cancellable;
import org.bukkit.event.Event;
import org.bukkit.event.HandlerList;

/**
 * author TheMolkaPL
 */
public class PlayerChangeServerEvent extends Event implements Cancellable {
	
	private static final HandlerList handlers = new HandlerList();
	private boolean cancelled;
	private Player playerPla;
	private String serverStr;
	private String serverAddressStr;
	private String messageStr = ChatColor.GRAY + "Connecting to server " + ChatColor.GOLD + null + ChatColor.GRAY + "...";
	
	public PlayerChangeServerEvent(Player player, String server, String serverAddress) {
		playerPla = player;
		serverStr = server;
		serverAddressStr = serverAddress;
		messageStr = ChatColor.GRAY + "Connecting to server " + ChatColor.GOLD + server + ChatColor.GRAY + "...";
	}
	
	@Override
	public HandlerList getHandlers() {
		return handlers;
	}
	
	public static HandlerList getHandlerList() {
		return handlers;
	}

	@Override
	public boolean isCancelled() {
		return cancelled;
	}

	@Override
	public void setCancelled(boolean cancel) {
		cancelled = cancel;
	}
	
	public String getMessage() {
		return messageStr;
	}
	
	public Player getPlayer() {
		return playerPla;
	}
	
	public String getServer() {
		return serverStr;
	}
	
	public String getServerAddress() {
		return serverAddressStr;
	}
	
	public void setMessage(String message) {
		messageStr = message;
	}
	
	public void setServer(String server) {
		serverStr = server;
	}
	
	public void setServerAddress(String serverAddress) {
		serverAddressStr = serverAddress;
	}
	
}