Castle dynamic proxy not creating an implementation for inherited interface method

Question

I have a base interface that is inherited by several other interfaces. This interface has one method:

[ServiceContract]
public interface IBase
{
    [OperationContract]
    List<short> GetShorts();
}

I then, of course, have an inheriting interface:

[ServiceContract]
public interface IUseful : IBase
{
    [OperationContract]
    List<MyObject> GetMyObjects(MyInput input);
}

I have a class that serves as a generic interceptor for interfaces in order to provide a simple way to call services without extra setup:

public class ServiceInvoker<T> : DynamicObject, IInterceptor
    where T : class
{
    // ...
    public T Client { get { return (dynamic)this; } }
    // ...
}

I want to be able to call any service that implements IBase, so I have a class that looks like this:

public class BaseCaller
{
    private readonly IBase _base;
    public BaseCaller(IBase base) { _base = base; }
    public List<short> GetShorts() { return _base.GetShorts(); }
}

I construct BaseCaller basically like this:

var si = new ServiceInvoker<IUseful>();
var bc = new BaseCaller(si.Client);

The problem comes when I make a call to GetShorts and it calls _base.GetShorts:

MissingMethodException

Method 'MyApp.IUseful.GetSubNumbers' not found.

When I hover over _base, I can see the interceptor, and I can see that token_GetSubNumbers exists. I can cast _base to IUseful and call GetMyObjects successfully; I just can't call GetShorts. It looks like Castle isn't implementing IBase. Am I doing something wrong?

Answer 1

This appears to work, so going with it unless someone provides a better solution:

I removed the inheritence of IBase and just use it directly with a ServiceInvoker<IBase>. The services now have to implement IBase directly and expose an endpoint for it, but it works.