从解决方案中的多个项目中使用相同的WCF服务

Question

Situation:

I have a solution of multiple projects:

• Executable App #1
• Executable App #2
• WCF Project
• Shared Project
• "Other" Project
• ...

Now I need to consume the WCF service in my executable app #1. Eg to retrieve information about a user from a UserService in the WCF project. Due to both executables require a login, handled by the UserService , I added a ´Authenticate´ method in my Shared Project . This authentication is also handled by the UserService .

Problem:

Now I have to add a service reference inside each project, which is actually not a problem. But now I get generated the proxy classe and the endpoint in all three projects.

I see this as an issue, due to I have to update all 3 service references:

• Executable App #1 requires only the endpoint (proxy class of shared project could be used)
• Executable App #2 requires only the endpoint (same as above)
• Shared Project requires only the proxy class

Question:

Is there any nice solution to add a service reference without creating the endpoint configuration in the shared project and without creating the proxy classes in the executable apps?

Answer 1

Okay I implemented something similar to this recently, and this is what I did. I think it provides nice separation of concerns and keeps you from having to generate a proxy class in all your executables.

• Create a ServiceContract project. This will contain the interface that defines the contract for your WCF service.
• Create a ClientProxy project, and include a ClientProxy class. This project will reference your ServiceContact, and will set up the bindings for your WCF service. I recommend that you pass the URI of your WCF service into this class in the constructor.

The proxy class should look something like this:

public class ClientProxy 
{
    public IMyWCFService service;

    public ClientProxy(string uri)
    {
        // Any channel setup code goes here
        EndpointAddress address = new EndpointAddress(uri);
        NetTcpBinding binding = new NetTcpBinding(SecurityMode.Transport);
        binding.TransferMode = TransferMode.Streamed;
        binding.MaxBufferSize = //whatever
        binding.MaxReceivedMessageSize = //whatever
        ...

        ChannelFactory<IMyWCFService> factory = new ChannelFactory<IMyWCFService>(binding, address);
        service = factory.CreateChannel();
    }
}

Now, your WCF service project will contain a reference to the ServiceContract, and you will implement the interface here.

Your executables will contain references to the ServiceContract and ClientProxy projects.

I hope this helps you. Let me know if you need clarification on anything.