For the happy path, you don't. And many apps can stick very comfortably on the happy path. I wrote a controller for a video mixer[0] that ran out-of-the-box on

For the happy path, you don't. And many apps can stick very comfortably on the happy path. I wrote a controller for a video mixer[0] that ran out-of-the-box on Android and iOS using websockets and everything Just Worked. (I still haven't released the iOS version due to lack of test equipment, but it runs just fine.) [0] - http://bit.ly/buymyapp http://bit.ly/buymyapp