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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?

Tyler A.
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Maxim Korobov
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    http://stackoverflow.com/questions/34630585/does-apns-feedback-service-no-more-exist-as-per-new-apis – chedabob Jan 07 '16 at 15:41
  • Thank you for fast response. – Maxim Korobov Jan 07 '16 at 17:44
  • @chedabob: That is only talking about how the new APNS API doesn't have a feedback service. Nothing about the old APNS API. – user102008 Jan 09 '16 at 02:32
  • So I guess the service is deprecated. Does anybody know if it still works with PushSharp? Are we just supposed to go off of the Http status code 410 then? – Ethan Fischer Jan 21 '16 at 12:49
  • Current stable version 2.x supports only deprecated feedback service, the main developer is working on new api support in 3.x develop branch. – Maxim Korobov Jan 21 '16 at 13:32
  • Guys, the feedback service is on the last page of the APNS docs in the Local and Remote Notifications PDF. It's the last thing after discussing how to use APNS. Look here: https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Appendixes/BinaryProviderAPI.html#//apple_ref/doc/uid/TP40008194-CH106-SW4 – Alex Zavatone May 24 '16 at 21:42
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    I'm voting to close this question as off-topic because [we are not customer support for your favourite company](http://meta.stackoverflow.com/questions/255745/). – Richard Slater Apr 28 '17 at 21:45
  • Fry, is it you? – Maxim Korobov Apr 28 '17 at 21:48

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