public void Send()
        {
            var pos   = new TrackerPositions(trackers);
            var bytes = MessagePackSerializer.Serialize(pos);

            _client.SendAsync(bytes, bytes.Length);
        }
        private void Start()
        {
            ReceiveEvent += b =>
            {
                try
                {
                    current = MessagePackSerializer.Deserialize <TrackerPositions>(b);
                    Apply();
                }
                catch (Exception e)
                {
                    Debug.LogError(e);
                }
            };

            Connect();

            Receive();
        }