Open Radar

 
Summary:
I wrote a bug (19032099), marked resolved, where it appeared to me Silent Push was broken in iOS 8.x In the end I saw this in my console log: "Dec 13 10:15:31 David-Hoerls-iPad apsd[83] <Warning>: Silent Push: Deny app no resources reason: cell quality 0 wifi quality 0 ." Moving my device closer to a wifi hotspot resulted in every push making it, where before everyone failed.

Now, but not make it - I mean that iOS refused to pass it to me - I could see the app badge change, so knew iOS got the notiification, it just didn't pass it to me - so all the metadata contained in the push was lost (unless you provide the push later, I have a test in progress).

But really - the issue is - if iOS gets the notification, it should pass it to the app. Most background apps are going to schedule a background NSURLSession. iOS could also return no wifi no cell in Reachability and/or refuse to turn on the transmitters - that I wouldn't mind. But completely tossing the notification seems really drastic. Who knows when the user is going to be in a strong WIFI zone next?

Steps to Reproduce:
- Run your app that accepts background silent push notifications
- Get near a strong WIFI signal
- background the app and send a push containing a new badge value
- See the badge change and the app respond (in my case with a local notification)
- now move the app where you only see 1 bar of WIFI
- send a new push, with a new badge number

Expected Results:
If the badge changes, iOS got the notification, it should supply it to my app.

Actual Results:
When the WIFI signal is weak, the notification is never provided to my app.

Version:
iOS 8.2 beta 2 (but probably the same in 8.1)

Notes:
I left the iPad out for 10 minutes waiting to see if the notification would get delivered. If I ever get it, I'll update this bug report.

Configuration:
iPad 3 WIFI+Verizon (cellular disabled)

UPDATE:
So after about 20 minutes of sitting in a strong WIFI zone, iOS finally delivered the notification to my app. Still, it should have been delivered, and let me schedule what I needed to do right away. The device was still usable in the weak WIFI zone - I could web surf for instance.