I have an app with in-app auto-renewable subscriptions all configured and working OK. I face a tricky problem where I would need my server to be aware of a renewal even though the user has not re-open his app since the renewal.
The way I implemented the in-app purchase support is that the app registers a SKPaymentTransactionObserver and gets called when new payments are made. Then the app calls my server which verifies the receipt with Apple and extends the subscription period for the user.
Meaning that if at the end of a period the user does not open my app, I am not aware that the subscription is extended because the server will never be updated with the new receipt...
... BUT when a user purchase a subscription, it enables features for him and for others. And since he has paid, the features he enables for others should work.
Is there a way for my server to ping apple and get new payment transactions so that I can register the information, should the user has or has not open the app?
