I am a little bit confused about this question.
Somewhere I read, it is not allowed by Apple to make network requests, when an app not in the foreground. Is also the case, when app is woken up by locationManager events?
What I'd like to: define a Beacon region, handle locationManager:didEnterRegion: and locationManager:didExitRegion: to call my simple web service methods. It should be done even if the app is not active and woken up by location manager.
Technically it is easy to implement - basically, I have already made it - but I don't know if it is allowed by Apple, and would take app review successfully.
Thanks!
Yes, it is allowed. It is a common technique, and I have several apps in the AppStore that do this. The Beacon Scavenger Hunt, for example, sends stats back to our server when participants use the iOS app to find beacon targets in the hunt.
When you detect a beacon in the background, however, you only have about 5 seconds of running time from iOS. Take care that your server responds quickly enough. This small time window is the way Apple enforces that people don't abuse this.