If you've already got your server backend up and running, I don't think you should have too much trouble implementing this functionality. If I understand correctly you just need your server to give you the latest version string (eg "1.0.0") when you send a request to some url, say
Code:
bobflip.com/api/latest_version
. In that case you just need to get that (or some other, easier) library working.
Some (untested!!!) example code might look like
Code:
version_request = JNL_HTTPGet();
version_request.connect("bobflip.com/api/latest_version");
while(version_request.run()==0){
sleep(100);
}
char* version_str = version_request.getreply();
// ...check if app version matches latest version str...
You will of course want to handle errors (e.g. if version_request.run()==-1), and you'll probably want to do something more elegant than sleeping in a while loop to wait for the response.