Call WCF service from ASP.NET core 3.1 API

Question

I am getting below error when I am trying to call WCF service from ASP.Net Core, this is happening only when both wcf service and API deployed on IIS 10.

Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) System.ServiceModel.CommunicationException: No connection could be made because the target machine actively refused it. ---> System.Net.Http.HttpRequestException: No connection could be made because the target machine actively refused it. ---> System.Net.Sockets.SocketException (10061): No connection could be made because the target machine actively refused it. at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)

I am able to connect same WCF service from ASP.NET MVC controller. It fails only when we access from .net core.

Any thoughts here, will be greatly appreciated.

Thanks, Pani

Answer 1

It was my bad, when we add an WCF service reference, to .net stranded library it will end up with adding " ConnectedService.json ", this JSON will have reference to WCF endpoint, i was going by that. But actually reference.cs was not reading a URL from ConnectedService.json, it was hard coded in reference.cs .

Solution is I had overwrite the URL while creating an instance of service client.

SomeServiceClient = new MyWebService.SomeServiceClient(); IConfigurationRoot configuration = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json").Build(); SomeServiceClient.Endpoint.Address = new EndpointAddress(configuration?.GetSection("WSSettings")?.GetSection("WSEndPoint")?.Value);

Where WSSettings is section in appsettings.json and WSEndPoint is key in that contain WCF endpoint