I have a WCF solution that consists
of the following class libraries:
Exercise.Services: Contains
the implementation classes for
the services.
Exercise.ServiceProxy: Contains
the classes that are instantiated in
the client.
Exercise.HttpHost: Contains
the services (*.svc files).
I'm calling
the service from a console application and
the "first version" works really well so I took
the next step which is to create a custom ServiceHostFactory, ServiceHost, and InstanceProvider so I can use constructor injection in my services as it is explained in this article.
These classes are implemented in yet another class library:
4. Exercise.StructureMapWcfExtension
Now even though I've modified my service this:
<%@ ServiceHost Language="C#" Debug="true" Factory="Exercise.StructureMapWcfExtension.StructureMapServiceHostFactory" Service="Exercise.Services.PurchaseOrderService" %>
I always get
the following exception:
System.ServiceModel.CommunicationException Security negotiation failed
because
the remote party did not send back a reply in a timely manner.
This may be because
the underlying transport connection was aborted.
It fails in this line
of code:
public class PurchaseOrderProxy : ClientBase<IPurchaseOrderService>, IPurchaseOrderService
{
public PurchaseOrderResponse CreatePurchaseOrder(PurchaseOrderRequest purchaseOrderRequest)
{
return base.Channel.CreatePurchaseOrder(purchaseOrderRequest); //Fails here
}
}
But that is not all, I added a trace to
the web.config file and this is
the error that appears in
the log file:
System.InvalidOperationException
The service type provided could not
be loaded as a service because it does not have a default
(parameter-less) constructor. To fix
the problem, add a default
constructor to
the type, or pass an instance
of the type to
the host.
So this means that my ServiceHostFactory is never being hit, I even set a breakpoint in both its constructor and its method and they never get hit.
I've added a reference
of the StructureMapWcfExtension library to all
the other ones (even
the console client), one by one to no avail.
I also tried to use
the option in
the host's web.config file to configure
the factory like so:
<serviceHostingEnvironment>
<serviceActivations>
<add service="Exercise.Services.PurchaseOrderService" relativeAddress="PurchaseOrderService.svc" factory="Exercise.StructureMapWcfExtension.StructureMapServiceHostFactory"/>
</serviceActivations>
</serviceHostingEnvironment>
That didn't work either.
Please I need help in getting this to work so I can incorporate it to our project.
Thank you.
UPDATE: Here's
the service host factory's code:
namespace Exercise.StructureMapWcfExtension
{
public class StructureMapServiceHostFactory : ServiceHostFactory
{
private readonly Container Container;
public StructureMapServiceHostFactory()
{
Container = new Container();
new ContainerConfigurer().Configure(Container);
}
protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
{
return new StructureMapServiceHost(Container, serviceType, baseAddresses);
}
}
public class ContainerConfigurer
{
public void Configure(Container container)
{
container.Configure(r => r.For<IPurchaseOrderFacade>().Use<PurchaseOrderFacade>());
}
}
}
