我正在尝试使用 System.Io.Pipes 提供的匿名管道组合一个类来处理进程之间的 Ipc。
我遇到的问题是，当我使用单个进程测试类时，管道设置正确，我可以毫无问题地在客户端和服务器之间发送数据。但是，当我将客户端和服务器拆分为单独的进程（在同一台机器上）时，客户端无法连接到服务器管道的末端。
调用时引发错误System.Io.Exception Invalid pipe handle
_outboundPipeServerStream = new AnonymousPipeClientStream(PipeDirection.Out, serverHandle);
该类的完整代码粘贴在下面。
基本上它的工作是这样的；
- 服务器进程。为入站数据创建匿名管道集 - 调用此管道 A
- 服务器进程。启动客户端进程并通过命令参数传递 PipeHandle
- 客户流程。连接到管道 A 的末端
- 客户流程。为入站数据创建匿名管道集（管道 B） 5 客户端进程。使用管道 A 将管道句柄传回服务器
- 服务器进程。连接到管道 B 的末端
所以现在我们有两个匿名管道，指向服务器和客户端之间的相反方向。
这是我的 IPC 类的完整代码
public class MessageReceivedEventArgs : EventArgs
{
public string Message { get; set; }
}
public class IpcChannel : IDisposable
{
private AnonymousPipeServerStream _inboundPipeServerStream;
private StreamReader _inboundMessageReader;
private string _inboundPipeHandle;
private AnonymousPipeClientStream _outboundPipeServerStream;
private StreamWriter _outboundMessageWriter;
public delegate void MessageReceivedHandler(object sender, MessageReceivedEventArgs e);
public event MessageReceivedHandler MessageReceived;
private Thread _clientListenerThread;
private bool _disposing = false;
public IpcChannel()
{
SetupServerChannel();
}
public IpcChannel(string serverHandle)
{
SetupServerChannel();
// this is the client end of the connection
// create an outbound connection to the server
System.Diagnostics.Trace.TraceInformation("Connecting client stream to server : {0}", serverHandle);
SetupClientChannel(serverHandle);
IntroduceToServer();
}
private void SetupClientChannel(string serverHandle)
{
_outboundPipeServerStream = new AnonymousPipeClientStream(PipeDirection.Out, serverHandle);
_outboundMessageWriter = new StreamWriter(_outboundPipeServerStream)
{
AutoFlush = true
};
}
private void SetupServerChannel()
{
_inboundPipeServerStream = new AnonymousPipeServerStream(PipeDirection.In);
_inboundMessageReader = new StreamReader(_inboundPipeServerStream);
_inboundPipeHandle = _inboundPipeServerStream.GetClientHandleAsString();
_inboundPipeServerStream.DisposeLocalCopyOfClientHandle();
System.Diagnostics.Trace.TraceInformation("Created server stream " + _inboundPipeServerStream.GetClientHandleAsString());
_clientListenerThread = new Thread(ClientListener)
{
IsBackground = true
};
_clientListenerThread.Start();
}
public void SendMessage(string message)
{
System.Diagnostics.Trace.TraceInformation("Sending message {0} chars", message.Length);
_outboundMessageWriter.WriteLine("M" + message);
}
private void IntroduceToServer()
{
System.Diagnostics.Trace.TraceInformation("Telling server callback channel is : " + _inboundPipeServerStream.GetClientHandleAsString());
_outboundMessageWriter.WriteLine("CI" + _inboundPipeServerStream.GetClientHandleAsString());
}
public string ServerHandle
{
get
{
return _inboundPipeHandle;
}
}
private void ProcessControlMessage(string message)
{
if (message.StartsWith("CI"))
{
ConnectResponseChannel(message.Substring(2));
}
}
private void ConnectResponseChannel(string channelHandle)
{
System.Diagnostics.Trace.TraceInformation("Connecting response (OUT) channel to : {0}", channelHandle);
_outboundPipeServerStream = new AnonymousPipeClientStream(PipeDirection.Out, channelHandle);
_outboundMessageWriter = new StreamWriter(_outboundPipeServerStream);
_outboundMessageWriter.AutoFlush = true;
}
private void ClientListener()
{
System.Diagnostics.Trace.TraceInformation("ClientListener started on thread {0}", Thread.CurrentThread.ManagedThreadId);
try
{
while (!_disposing)
{
var message = _inboundMessageReader.ReadLine();
if (message != null)
{
if (message.StartsWith("C"))
{
ProcessControlMessage(message);
}
else if (MessageReceived != null)
MessageReceived(this, new MessageReceivedEventArgs()
{
Message = message.Substring(1)
});
}
}
}
catch (ThreadAbortException)
{
}
finally
{
}
}
public void Dispose()
{
_disposing = true;
_clientListenerThread.Abort();
_outboundMessageWriter.Flush();
_outboundMessageWriter.Close();
_outboundPipeServerStream.Close();
_outboundPipeServerStream.Dispose();
_inboundMessageReader.Close();
_inboundMessageReader.Dispose();
_inboundPipeServerStream.DisposeLocalCopyOfClientHandle();
_inboundPipeServerStream.Close();
_inboundPipeServerStream.Dispose();
}
}
在单个进程中，可以这样使用；
class Program
{
private static IpcChannel _server;
private static IpcChannel _client;
static void Main(string[] args)
{
_server = new IpcChannel();
_server.MessageReceived += (s, e) => Console.WriteLine("Server Received : " + e.Message);
_client = new IpcChannel(_server.ServerHandle);
_client.MessageReceived += (s, e) => Console.WriteLine("Client Received : " + e.Message);
Console.ReadLine();
_server.SendMessage("This is the server sending to the client");
Console.ReadLine();
_client.SendMessage("This is the client sending to the server");
Console.ReadLine();
_client.Dispose();
_server.Dispose();
}
在此先感谢您的任何建议。