C# 命名管道，如何检测客户端断开连接

Question

我当前的命名管道实现是这样的：

while (true)
{
  byte[] data = new byte[256];                        
  int amount = pipe.Read(data, 0, data.Length);
  if (amount <= 0)
  {
      // i was expecting it to go here when a client disconnects but it doesnt
     break;
  }
  // do relevant stuff with the data
}

如何正确检测客户端何时断开连接？

Answer 1

设置读取超时并NamedPipeClientStream.IsConnected在超时发生时轮询标志。

读取超时将导致在超时持续时间内空闲的读取抛出异常InvalidOperationException

如果您不阅读，并且想要检测断开连接，请在管道连接的生命周期内在工作线程上调用此方法。

while(pipe.IsConnected && !isPipeStopped) //use a flag so that you can manually stop this thread
{
    System.Threading.Thread.Current.Sleep(500);
}

if(!pipe.IsConnected)
{
    //pipe disconnected
    NotifyOfDisconnect();
}