异步与Windows命名管道的双向沟通​​（.NET） [英] Async two-way communication with Windows Named Pipes (.Net)

问题描述

我具有需要彼此通信的窗口服务和GUI。这两者都可以随时发送邮件。

I have a windows service and a GUI that need to communicate with each other. Either can send messages at any time.

我期待在使用了NamedPipes，但似乎你不能阅读和放大器;同时写入流（或至少我不能找到覆盖这种情况下，任何的例子）。

I'm looking at using NamedPipes, but it seems that you cant read & write to the stream at the same time (or at least I cant find any examples that cover this case).

是否有可能通过单NamedPipe做这样的双向通信的？
或者我需要打开两个管道（一个来自GUI的>服务，一个来自服务 - > GUI）？

Is it possible to do this kind of two-way communication via a single NamedPipe? Or do I need to open two pipes (one from GUI->service and one from service->GUI)?

推荐答案

使用WCF可以使用命名管道复式

Using WCF you can use duplex named pipes

// Create a contract that can be used as a callback
public interface IMyCallbackService
{
    [OperationContract(IsOneWay = true)]
    void NotifyClient();
}

// Define your service contract and specify the callback contract
[ServiceContract(CallbackContract = typeof(IMyCallbackService))]
public interface ISimpleService
{
    [OperationContract]
    string ProcessData();
}

实现服务

[ServiceBehavior(InstanceContextMode=InstanceContextMode.PerCall)]
public class SimpleService : ISimpleService
{
    public string ProcessData()
    {
        // Get a handle to the call back channel
        var callback = OperationContext.Current.GetCallbackChannel<IMyCallbackService>();

        callback.NotifyClient();
        return DateTime.Now.ToString();
    }
}

主机服务

class Server
{
    static void Main(string[] args)
    {
        // Create a service host with an named pipe endpoint
        using (var host = new ServiceHost(typeof(SimpleService), new Uri("net.pipe://localhost")))
        {
            host.AddServiceEndpoint(typeof(ISimpleService), new NetNamedPipeBinding(), "SimpleService");
            host.Open();

            Console.WriteLine("Simple Service Running...");
            Console.ReadLine();

            host.Close();
        }
    }
}

创建客户端应用程序，在本实施例的客户端类实现回叫合同

Create the client application, in this example the Client class implements the call back contract.

class Client : IMyCallbackService
{
    static void Main(string[] args)
    {
        new Client().Run();
    }

    public void Run()
    {
        // Consume the service
        var factory = new DuplexChannelFactory<ISimpleService>(new InstanceContext(this), new NetNamedPipeBinding(), new EndpointAddress("net.pipe://localhost/SimpleService"));
        var proxy = factory.CreateChannel();

        Console.WriteLine(proxy.ProcessData());
    }

    public void NotifyClient()
    {
        Console.WriteLine("Notification from Server");
    }
}

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