System.IO.Exception：管坏了 [英] System.IO.Exception: Pipe is broken

问题描述

我有2个.NET应用程序互相交谈过命名管道。一切都是伟大的第一次通过，但第一个消息之后被发送，服务器将要再听一遍，在waitForConnection方法抛出System.IO.Exception与文本管子坏了。我为什么在这里得到这个例外？这是我第一次用管工作，但类似的模式在过去与插座为我工作。

I have 2 .NET applications that talk to each other over a named pipe. Everything is great the first time through, but after the first message is sent, and the server is going to listen again, the WaitForConnection method throws a System.IO.Exception with text of "Pipe is Broken." Why am I getting this exception here? This is my first time working with pipes, but a similar pattern has worked for me in the past with sockets.

code嗨！
服务器：

Code ahoy!
Server:

using System.IO.Pipes;

static void main()
{
    var pipe = new NamedPipeServerStream("pipename", PipeDirection.In);
    while (true)
    {
        pipe.Listen();
        string str = new StreamReader(pipe).ReadToEnd();
        Console.Write("{0}", str);
    }
}

客户端：

public void sendDownPipe(string str)
{
    using (var pipe = new NamedPipeClientStream(".", "pipename", PipeDirection.Out))
    {
        using (var stream = new StreamWriter(pipe))
        {
            stream.Write(str);
        }
    }
}

要sendDownPipe第一个呼叫获取服务器打印我送就好了消息，但是当它循环备份再听一遍，它poops。

the first call to sendDownPipe gets the server to print the message I send just fine, but when it loops back up to listen again, it poops.

推荐答案

我会后我的code，似乎工作 - 我很好奇，因为我从来没有与任何管道。我没有找到类命名为服务器端有关的命名空间，所以这里的基础上， NamedPipeServerStream 的code。回调的东西只是因为我不能打扰有两个项目。

I'll post my code that seems to work - I was curious since I never did anything with pipes. I didn't find the class you name for the server-side in the relevant namespace, so here's the code based on the NamedPipeServerStream. The callback stuff is just because I couldn't be bothered with two projects.

NamedPipeServerStream s = new NamedPipeServerStream("p", PipeDirection.In);
Action<NamedPipeServerStream> a = callBack;
a.BeginInvoke(s, ar => { }, null);
...
private void callBack(NamedPipeServerStream pipe)
{
  while (true)
  {
    pipe.WaitForConnection();
    StreamReader sr = new StreamReader(pipe);
    Console.WriteLine(sr.ReadToEnd());
    pipe.Disconnect();
  }
}

和客户做这样的：

using (var pipe = new NamedPipeClientStream(".", "p", PipeDirection.Out))
using (var stream = new StreamWriter(pipe))
{
  pipe.Connect();
  stream.Write("Hello");
}

我可以重复上面的块多次与服务器上运行，没有概率。

I can repeat above block multiple times with the server running, no prob.

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