Architecture For Android Devices And Desktop Server Application

Question

I'm designing an application where one or more devices can control an other one device. In the middle there is a Desktop Server.

In few word:

• One of the "Controller Devices" through an Activity take a command from the user and communicate it to the Server;
• The "Controlled Device" has a Service that listen for commands from Server;
• When the Controlled Device answers the Server has to inform all the "Controller Devices".

Which is the best Pattern, or Architecture, that can i use?

Answer 1

It's mainly Observer pattern,but you don't need to build the architecture, google has already built it for you, using Google Cloud Messsaging (GCM).

Your client register/unregister to gcm and then sends data to your backend/server which in turn manipultes and sends data to gcm which in turn sends push notification to registered devices, then you device must has a receiver to send the data back to your application.

Here have a look GCM

And here is a sample diagram that represents the gsm architecture, note that you can use any server instead of app engine