/**
  * Sends a login failure.
  *
  * @param message The message to send to the client.
  */
 public void sendLoginFailure(String message) {
   PacketBuilder bldr =
       new PacketBuilder(PersistingPacketManager.getPacketManager().getOutgoingPacket(14));
   bldr.putString("reason", message);
   session.send(bldr.toPacket());
   session.close();
 }