read from socket

   public async Task Read()
        {
            DataReader reader = new DataReader(socket.InputStream);

            while (true)
            {
                if (ActionManager.GetCurrentState() == ActionManager.AppState.DISCONNECTING)
                {
                    ActionManager.SetCurrentState(ActionManager.AppState.DISCONNECTED_CONTROL);
                    break;
                }

                // Read first 4 bytes (length of the subsequent string).
                await reader.LoadAsync(4);
                var res = new byte[4];

                reader.ReadBytes(res); //reader.ReadUInt32() not work

                var msgLength = BitConverter.ToUInt32(res, 0);
                //Debug.Log(msgLength);

                uint actualStringLength = await reader.LoadAsync(msgLength);
                if (msgLength != actualStringLength)
                {
                    //The underlying socket was closed before we were able to read the whole dat
                    throw new SocketException(-9999);
                }
                res = new byte[msgLength];
                //read next string
                reader.ReadBytes(res);
                await OnDataReceived(EventArgs.Empty, res);
                await Task.Delay(50);
            }
        }