Weird Apple Push Notification behaviour when the receiving iPhone is turned off?

You may want to check for this behavior across both the cellular and WiFi networks. There's a lot of strange behavior when the phone is on WiFi, especially if there are multiple NAT router involved, i.e. In a large corporation where there's a main router and per-floor WiFi routers, or in a home where you have multiple routers used to extend the range.

But on cell it's been pretty solid Also, the 10-second cancellation delay may be cutting it too close. They don't guarantee timely delivery and I've gotten lags of as much as 3 minutes on the production server after queuing off a push request. You may want to plan for system congestion Either way, it sounds like it might be worthy of a bugreporter report.

You may want to check for this behavior across both the cellular and WiFi networks. There's a lot of strange behavior when the phone is on WiFi, especially if there are multiple NAT router involved, i.e. In a large corporation where there's a main router and per-floor WiFi routers, or in a home where you have multiple routers used to extend the range.

But on cell it's been pretty solid. Also, the 10-second cancellation delay may be cutting it too close. They don't guarantee timely delivery and I've gotten lags of as much as 3 minutes on the production server after queuing off a push request.

You may want to plan for system congestion. Either way, it sounds like it might be worthy of a bugreporter report.

For the record, I raised this as bug ID #7349660 with Apple on 29th Oct (https://bugreport.apple. Com), then gave them the additional diagnostics they wanted on 30th Oct. No response from Apple since then, so I am assuming this is probably just low on their priority list, which is fair enough as it is quite a small timing window where the problem can occur (which I didn't realize when I first opened this question).

In apple's document it is said that it can cache the push notification up to 30 days. So you may get push once you switch on your iphone (provided you are having interconnection).

Yes I know - in my post I explain that I do get one push notification delivered after turning the phone back on. But it is only the first push in a series of four, my question is whether it should be the most recent push, not the oldest. – Dan J Oct 28 '09 at 19:24.

It seems like it may be a bug where there's some kind of timeout server side, and they accidentally keep B if C was sent too soon after... If you have a good test example (and this seems like a good test) I would file a Radar report on this.

My test had about 10 seconds between each push notification. I plan to retest and vary some of the time intervals to see if I can change the behaviour, then I'll raise a bug with Apple (bugreport.apple. Com).

– Dan J Oct 29 '09 at 17:34.

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