TCP数据从Xamarin Android应用程序损坏

我有一个Xamarin Android应用程序，从Android 4.4 (KitKat)设备(x86硬件)捕获h264视频帧，并通过TCP发送到Windows 10客户端(通过WiFi)。我使用protobuf.net打包帧SerializeWithLengthPrefix (Fixed32)。这在大多数情况下工作得很好，但随机地(在20秒到10分钟之间)接收端的数据会被损坏。您可以看到，我还将数据保存到设备中以供调试。使用客户端应用程序读取这些数据不会产生任何错误(它没有损坏)。我不知道问题出在哪里。这似乎是Xamarin的TCP客户端的一个平台错误，但我很难相信我是唯一一个遇到这个问题的人。注意:TCP通信在它自己的线程中工作。

   private static void ProcessFrameQueue(TcpClient client)
        {
            //debug log for comparing TCP socket sent data with client recieved
            _tempDumpFile = StreamControl.GetOutputTempFilePath(DateTime.Now.Ticks.ToString() + "-probuf-dump.bin");
            var sentFrameCount = 0;
            try
            {
                while (client.Client.IsConnected())
                {
                    var data = _packetQueue.Take();
                    try
                    {
                        using (var stream = new MemoryStream())
                        {
                            Serializer.SerializeWithLengthPrefix(stream, data, PrefixStyle.Fixed32);
                            var protoBufData = stream.ToArray();
                            client.Client.Send(protoBufData);
                            //for debugging -- save the TCP data for comparison to what is recieved
                            //todo: delete as this is debuggng
                            using (var filestream = new FileStream(_tempDumpFile, FileMode.Append))
                            {
                                filestream.Write(protoBufData, 0, protoBufData.Length);
                                filestream.Flush(true);
                            }
                        }
                        sentFrameCount++;
                    }
                    catch (Exception ex)
                    {
                        //log error
                    }
                } //end while
            }
            catch (Exception ex)
            {
               //log error
            }
        }

这是我为调试编写的一个简单的客户端(我手动计算数据包大小以确保它不是protobuf.net中的错误——这不是protobuf.net的问题)。最终，大小包将包含坏数据，导致溢出。

  var client = new TcpClient("x.x.x.x", 19901);
        client.ReceiveTimeout = 100000000;
        byte[] bytes = new byte[client.ReceiveBufferSize];
        var netStream = client.GetStream();
        var sizezReadBtyes = 0;

        var sizeBytes = new byte[4];
        var packetCount = 0;
        while (true)
        {
            //reads until it gets 4 bytes to calculate the packet size
            var sizeOffset = 0;
            var sizeLength = 4;
            while ((sizezReadBtyes = netStream.Read(sizeBytes, sizeOffset, sizeLength)) > 0)
            {
                sizeOffset += sizezReadBtyes;
                sizeLength -= sizezReadBtyes;
            }
            //read the remaining data...
            var offset = 0;
            var packetBytes = 0;
            int packetlength = BitConverter.ToInt32(sizeBytes, 0);
            var buffer = new byte[packetlength];

            while (packetlength > 0 && (packetBytes = netStream.Read(buffer, offset, packetlength)) > 0)
            {
                offset += packetBytes;
                packetlength -= packetBytes;
            }
            using (var ms = new MemoryStream(buffer))
            {
                var obj = ProtoBuf.Serializer.Deserialize<NetworkMediaPacket>(ms);
                Console.WriteLine($"packet found {packetCount++} {obj.Data.Length}");
            }
            if (packetlength > 0) throw new EndOfStreamException();
        }