I have a web page that was added to an ios Home Screen. It has a service worker and has successfully subscribed to push notifications. How can I determine when that subscription object no longer becomes valid? In general, does Apple have a policy on when it invalidates push subscription objects?
There is no "expirationTime" included on the subscription object, like other browsers provide, so I have no way of anticipating the expiration. If Apple does not expire push subscriptions ever, that is the best case scenario. If they do though, where can I figure that out?
argmi
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