private async Task TcpServer_ReceiveOriginalDataFromTcpClient(byte[] data, int size, int clientId) { var tmp = new byte[size]; Array.Copy(data, 0, tmp, 0, size); await tcpServer.SendDataAsync(clientId, tmp); if (data[0] == 0x89) { await tcpServer.DisconnectClientAsync(clientId); } }