WPF应用程序中的net.pipe服务主机

Question

合同：

[ServiceContract]
public interface IDaemonService {
    [OperationContract]
    void SendNotification(DaemonNotification notification);
}

服务：

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
public class DaemonService : IDaemonService {
    public DaemonService() {
    }

    public void SendNotification(DaemonNotification notification) {
        App.NotificationWindow.Notify(notification);
    }
}

在WPF应用程序中，我执行以下操作：

using (host = new ServiceHost(typeof (DaemonService), new[] {new Uri("net.pipe://localhost")})) {
            host.AddServiceEndpoint(typeof (IDaemonService), new NetNamedPipeBinding(), "AkmDaemon");                
            host.Open();
        } 

这个WPF应用程序启动另一个应用程序，如下所示：

Task.Factory.StartNew(() => {
                var tpm = new Process { StartInfo = { FileName = "TPM" } };
                tpm.Start();
                }
            });

名为TPM的应用程序启动正常。然后，我在Visual的调试菜单中附加到进程，我看到客户端说没有人在监听端点。

这是客户端：

 [Export(typeof(DaemonClient))]
public class DaemonClient : IHandle<DaemonNotification> {
    private readonly ChannelFactory<IDaemonService> channelFactory;
    private readonly IDaemonService daemonServiceChannel;

    public DaemonClient(IEventAggregator eventAggregator) {           
        EventAggregator = eventAggregator;
        EventAggregator.Subscribe(this);

        channelFactory = new ChannelFactory<IDaemonService>(new NetNamedPipeBinding(),
            new EndpointAddress("net.pipe://localhost/AkmDaemon"));            
        daemonServiceChannel = channelFactory.CreateChannel();
    }

    public IEventAggregator EventAggregator { get; private set; }

    public void Handle(DaemonNotification message) {
        daemonServiceChannel.SendNotification(message); //Here I see that the endpoint //is not found
    }

    public void Close() {
        channelFactory.Close();
    }
}

EndpointNotFoundException没有端点侦听“net.管道://localhost/AkmDaemon”.短唇

Answer 1

您是在一个ServiceHost语句中创建您的using语句，因此在Open调用之后立即对它进行处理。Dispose调用关闭ServiceHost。

using (host = new ServiceHost(...))
{
    host.AddServiceEndpoint(...);
    host.Open();
}
// ServiceHost.Dispose() called here

把使用的块放下来。