HOWTO remove device tokens received by Apple APNS feedback

Question

I am successfully fetching Apple APNS feedback data via PHP. The structure that I am getting (after some processing) looks something like this:

timestamp

device

Answer 1

@fyasar,

So your recommendation is to store the device token against device id(or some key). When a feedback is received for a device token, remove that device token row from DB, right? If have understood right, that wouldn't work in scenario were a user installs app, uninstalls it and then installs it again all with in a short duration and the feedback service was queried only after all this happened. In this case, if timestamp in feedback is not considered, device token will be removed which is incorrect as user has again installed the app and reregistered for push notification.

My question is this, as suggested in apple doc and many blogs, on registration, when device token is persisted, timestamp has to be persisted along with it. What time zone's ISO time should be persisted or what is the time zone on which feedback service returns the timestamp.