Can a service have multiple endpoints?

Question

We have a service that has some settings that are supported only over net.tcp. What's the best way to add another endpoint? Do I need to create an entire new host?

Answer 1

You can have multiple endpoints defined either on the server, or the client.

To do it on the client, you just need to edit your app.config file with a new endpoint with a different name, then define when you create your new client.

For example if you have an endpoint in your client app like:

<endpoint address="https://yourdomain.com/WCF/YourService.svc"
      binding="basicHttpBinding"
      bindingConfiguration="BasicHttpBinding_IYourService"
      contract="MessagingService.IYourService"  
      name="BasicHttpBinding_IYourService" />

Which you call by:

YourServiceClient client = new YourServiceClient();

You can add a new endpoint with a new name:

<endpoint address="https://yourotherdomain.com/WCF/YourService.svc"
      binding="basicHttpBinding"
      bindingConfiguration="BasicHttpBinding_IYourService"
      contract="MessagingService.IYourService"  
      name="BasicHttpBinding_IYourService_ENDPOINT2" />

Which you can call with:

YourServiceClient client = new YourServiceClient("BasicHttpBinding_IYourService_ENDPOINT2");

I just changed the domain above, but if you made a new binding configuration section, you could just change the "bindingConfiguration" value.

Answer 2

A service may have multiple endpoints within a single host, but every endpoint must have a unique combination of address, binding and contract. For an IIS-hosted service (that is, an .SVC file), just set the address of the endpoint to a relative URI and make sure that your Visual Studio or wsdl.exe generated client specifies the endpoint's name in its constructor.

See also the MSDN article Multiple Endpoints.