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最近，我们的整个 QA 环境从 VMWare 转移到了 Hyper-V 虚拟机。

我们的一个应用程序以每秒 20K 个数据包的速率将 UDP 数据包发送到多播云。

虽然这在 VMWare 环境中运行良好，但 Hyper-V 使应用程序在工作几分钟后抛出以下异常：

System.Net.Sockets.SocketException (0x80004005): An invalid argument was supplied
   at System.Net.Sockets.Socket.Send(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)

在将套接字的发送缓冲区大小定义为 1,000,000 字节时，我还设法立即模拟了这个问题。

我该如何解决这个问题？

更新 1：一旦发生异常，这是来自事件查看器的日志条目：

Faulting application name: Agent.exe, version: 1.0.12.7366, time stamp: 0x51389f69
Faulting module name: KERNELBASE.dll, version: 6.1.7601.18015, time stamp: 0x50b83c8a
Exception code: 0xe0434352
Fault offset: 0x0000c41f
Faulting process id: 0xaf0
Faulting application start time: 0x01ce1b4ce509dc7a
Faulting application path: C:\Users\DevUser\Desktop\QA\Agent.exe
Faulting module path: C:\Windows\syswow64\KERNELBASE.dll
Report Id: d2b45dce-8740-11e2-86f9-00155d022804

更新 2：UDP 数据包的大小为 100-200 字节。

更新3：这是有问题的代码：

    m_socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
    m_socket.Ttl = 1;

    if (GetRawParameter("send") != null)
    {
      Log("Starting sender...");

      StartSender();
    }

    ...snip...

private static void StartSender()
{
  m_lastPacketNumber = 0;

  m_socket.Connect(new IPEndPoint(m_ipAddress, m_port));

  if (m_bufferSize > 0)
    m_socket.SetSocketOption(
      SocketOptionLevel.Socket, SocketOptionName.SendBuffer, m_bufferSize);

  byte[] dataPad = null;

  if (m_packetSize > 8)
  {
    dataPad = new byte[m_packetSize - sizeof(long)];

    for (int i = 0; i < dataPad.Length; i++)
    {
      dataPad[i] = 0xFF;
    }
  }

  while (true)
  {
    Log("Sending data...");

    for (int i = 0; i < m_packetsPerSec; i++)
    {
      var data = BitConverter.GetBytes(m_lastPacketNumber.Value);

      if (dataPad != null)
        data = data.Concat(dataPad).ToArray();

      if (m_packetDump != null)
        m_packetDump.Add(m_lastPacketNumber.Value);

      m_socket.Send(data);

      if (m_usePerformanceCounters)
        IncreaseSendCounters(1);

      m_lastPacketNumber++;
    }

    Log(m_lastPacketNumber + " packets sent.");

    Thread.Sleep(1000);
  }
}

更新 4：当我尝试每秒发送 100K 个数据包时，失败的 Send() 似乎发生在 #14156 或 #32485 或 #25412 数据包（不是第一个！）上。

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1 回答 1

-1

Could you "roll up" the packets so that you are sending far less packets of larger size...and then un-roll them on the other side? 20k packets/second is a lot of sendto's.

于 2013-03-26T21:49:34.857 回答