WCF客户端无法连接到WCF服务器并出现错误

Question

I am unable to connect my WCF client to my WCF server on a Localhost network. The error that I am getting is the following:

Error while connecting to the Localhost server: Could not find default endpoint element that references contract 'MyServiceReference.IMyService' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this contract could be found in the client element.

The server connection is the following. Here is the code:

 _host = new ServiceHost(typeof(MyService));

 //Create Metadata exchange for the service
 ServiceMetadataBehavior mexBehavior = new ServiceMetadataBehavior();
 _host.Description.Behaviors.Add(mexBehavior);

 //Add service endpoints for the service and mex
 _host.AddServiceEndpoint(typeof(IMyService), new NetNamedPipeBinding(), "net.pipe://localhost/WFC_Server/MyService.svc");
 _host.AddServiceEndpoint(typeof(IMetadataExchange), MetadataExchangeBindings.CreateMexNamedPipeBinding(), "net.pipe://localhost/WFC_Server/MyService.svc/mex");
 _host.Open();

I am not setting up my client to connect to the server properly. Does anybody know why? Here is the code:

 var callback = new MyServiceCallback();
 var instanceContext = new InstanceContext(callback);
 var client = new MyServiceReference.MyServiceClient(instanceContext);
 client.Endpoint.Address = new EndpointAddress("net.pipe://localhost/WFC_Server/MyService.svc");
            client.OpenSession();

Does anybody know why my client does not connect to the server?

Answer 1

I have replicated the problem and fixed the issue. 1. Specify the endpoint address while creating the client.

 var callback = new MyServiceCallback();
                var instanceContext = new InstanceContext(callback);
                EndpointAddress remoteAddress = new EndpointAddress("net.pipe://localhost/WFC_Server/MyService.svc");
                var client = new MyServiceClient(instanceContext,new NetNamedPipeBinding(),remoteAddress);
                client.Hello(); // call the function

2. In the server, you can register like this:

Code:

            Uri address1 = new Uri("http://localhost/WFC_Server/");
            Uri address2 = new Uri("net.pipe://localhost/WFC_Server/");
            ServiceHost _host = new ServiceHost(typeof(MyService), address1,address2);

            //Create Metadata exchange for the service
            ServiceMetadataBehavior mexBehavior = new ServiceMetadataBehavior();
            mexBehavior.HttpGetEnabled = true;
            _host.Description.Behaviors.Add(mexBehavior);


            //Add service endpoints for the service and mex
           _host.AddServiceEndpoint(typeof(IMyService), new NetNamedPipeBinding(), "MyService.svc");

            _host.AddServiceEndpoint(
              ServiceMetadataBehavior.MexContractName,
              MetadataExchangeBindings.CreateMexHttpBinding(),
              "mex"
            );
            _host.Open();

I have used the following interfaces as an example:

  class MyService : IMyService
    {
        public void Hello()
        {
         Console.WriteLine("Hello From Server..");
        }
    }

    [ServiceContract(CallbackContract = typeof(ICallbackService))]
    internal interface IMyService
   {
        [OperationContract]
        void Hello();
    }


    [ServiceContract]
    public interface ICallbackService
    {
        [OperationContract]
        void CallClient();
    }