Async client-server pattern

I want to make a local service. User will upload some files, that would be parsed by server. At the end of the process the user should get the result. The process is completely asynchronous, so the user may not get the result immediately.

Sound familiar?

I don't want to reinvent the bicycle, so I need advice on what pattern exists for this kind of client/server interaction? Maybe there is a good book on this topic, it's even better!