Returning in between messages to the client using WCF services

Question

I am developing an application based on simple WCF services, the client sends data to the server, the business logic in the client is staged, it either calls other process which are unique during the initializing of different processes I need to send messages back to client without returning the actual control i.e. messages like

1. parameters initialized,
2. calculating the tax ,
3. creating report

etc

How am I able to do this?

Answer 1

You need to use a duplex binding.