Creating a Custom Service Host

Creating custom service host enables you to change a service's run-time behavior.

1.  Download and open the WCF application here.

2. In the service host project add a class called NewProdSrvHost.

3. This public class inherits from ServiceHost class.

4. Add a default constructor calls the base(typeof(ProductService))

5. Override OnOpening() method to add a new endpoint as shown below:

  base.OnOpening();

  this.AddServiceEndpoint(typeof(IProductService), new BasicHttpBinding(), "newservice");

6. To always enable metadata even if the user turns it off:

protected override void OnOpening()

{

  base.OnOpening();

  this.AddServiceEndpoint(typeof(IProductService), new BasicHttpBinding(), "newservice");

  ServiceMetadataBehavior mdb = this.Description.Behaviors.Find<ServiceMetadataBehavior>();

   if (mdb != null)

   {

      mdb.HttpGetEnabled = true;

   }

   else

   {

      mdb = new ServiceMetadataBehavior();

      mdb.HttpGetEnabled = true;

      this.Description.Behaviors.Add(mdb);

   }

}        

Always metadata enable with one endpoint.

7. In the main method of the host instance, do the following changes to the host.

NewProdSrvHost host = new NewProdSrvHost();

8. Go to App.config file of the ConsoleHost project, locate and remove the following line of code:

<serviceMetadata httpGetEnabled="true"/>

9. Set the ConsoleHost as the startup project and Run it. Notice that a new endpoint with the relative address "newservice" is active.

10. Open a browser and navigate to the metadata address of the service. Note new endpoint and the metadata is enabled in the overridden OnOpening() method.



Links

Custom Service Host - https://msdn.microsoft.com/en-us/library/aa395224(v=vs.110).aspx