dual - comunication between two applications

Hi all,
I have two applications (A , B) exposing both one web service.
Application A needs to call th webservice exposed by application B and application B needs to expose the web service exposed by application A.
Do you know any good patter (i.e. dispatcher) to implement this?

Many thanks

If you're using the standard SOAP web services through .NET then this is easy.

Application A needs to add web service B as a "web reference" in the project.
Application B needs to add web service A as a "web reference" in the project.

If either of the web services return a user defined class then you must also add that class to the application that is consuming the web service. This should be done by adding the required classes to a DLL that can be shared by both of the web applications.