We are providing web service interfaces to our system using WCF. Our clients typically use some kind of middleware platform, e.g. WebLogic, to interact with us and others.
For scalability and robustness reasons, we want to queue incoming requests, process them, then send a response to the middleware platform. Hence, we are not using the HTTP request/response model. The response to the incoming message is basically empty.
One way to send the response is to ask the client to implement a response service that conforms to a WSDL given by us. But that is a bit more heavy-weight than I would like. Is there a better option?