When Googleing for ios device token expiration
topic you'll find many notices about Apple Feedback Service
. It's for polling of device token expiration
so when Feedback Service
told that particular device token
is expired it means that there is no chance to deliver push-notification
to that device token
. We should mark them as expired
.
Now I couldn't find any Feedback Service
mention in actual Apple
docs.
Is this service deprecated? If so, why PushSharp, pushd libraries still use it? And if so, what to do next? Read send status as on Google
and Microsoft
platforms?