I want to implement a client server application. here is the scenario. Server listens for client 24/7. Server accept request for client and save it in DB for further process. Once processing is done (it may take few hours), Server will response back to client.
in short , client and server listens for each other 24/7.
I want to implement it in C# but i also want that it should be accessibly from all platforms. Also is it possible in WCF?