load WCF service by environment in .net core project

Question

I have a problem while adding WCF in the .NET core project. When I used .net in the past I can add multiple environments in web.config so I can load the correct web service at runtime (Dev, Rec, Prod).

The problem in the .net core project when I added a reference of my WCF service as Connected Service it created one file ConnectedService.json that contains a URL for the WCF service.

{
  "ProviderId": "Microsoft.VisualStudio.ConnectedService.Wcf",
  "Version": "15.0.20406.879",
  "GettingStartedDocument": {
    "Uri": "https://go.microsoft.com/fwlink/?linkid=858517"
  },
  "ExtendedData": {
    "Uri": "*****?singleWsdl",
    "Namespace": "Transverse.TokenService",
    "SelectedAccessLevelForGeneratedClass": "Public",
    "GenerateMessageContract": false,
    "ReuseTypesinReferencedAssemblies": true,
    "ReuseTypesinAllReferencedAssemblies": true,
    "CollectionTypeReference": {
      "Item1": "System.Collections.Generic.List`1",
      "Item2": "System.Collections.dll"
    },
    "DictionaryCollectionTypeReference": {
      "Item1": "System.Collections.Generic.Dictionary`2",
      "Item2": "System.Collections.dll"
    },
    "CheckedReferencedAssemblies": [],
    "InstanceId": null,
    "Name": "Transverse.TokenService",
    "Metadata": {}
  }
}

My question how can I load the correct service based on the used environment.

Note.

In my Project, I did not have an appsettings neither web config. It is a .net core class library and it is called in ASP.NET core Application as Middleware.

Answer 1

As I understand from this article, this is Microsoft's recommendation:

1. Add new class file
2. Add same Namespace of service reference.cs
3. Add Partial Class to expand reference service class (declared in Reference.cs)
4. And Partial Method to implement ConfigureEndpoint() (declared in Reference.cs)
5. Implement ConfigureEndpoint() Method by Setting a new value for Endpoint

Example:

namespace Your_Reference_Service_Namespace
{
    public partial class Your_Reference_Service_Client
    {
        static partial void ConfigureEndpoint(System.ServiceModel.Description.ServiceEndpoint serviceEndpoint, System.ServiceModel.Description.ClientCredentials clientCredentials)
        {
            serviceEndpoint.Address = 
                new System.ServiceModel.EndpointAddress(new System.Uri("http://your_web_service_address"), 
                new System.ServiceModel.DnsEndpointIdentity(""));
        }
    }
}

6. Here, you can take the value from the appsettings.json file

   new System.Uri(configuration.GetValue("yourServiceAddress")