public void SendTo(NetworkPackage package, EndPoint to)
 {
     byte[] datagram = NetworkPackage.Serialize(package);
     try {
         client.Send(datagram, datagram.Length, (IPEndPoint)to);
     }
     catch (Exception e) {
         Debug.Log(e);
         Debug.Log(e.StackTrace);
         Debug.Log(e.Message);
     }
 }