[zmmmmm]

So, their conclusion in the end that it is technically impossible to build a self-hosted notification solution on iOS due to Apple's restrictions. Shame because I would love to be able to deploy something like this internally at work, but of course, half the business is walking around with iPhones. I'm kind of curious though why it doesn't ruin every single XMPP client out there - there seem to be a few on the App store.

[petronio]

Either the server is sending pushes through APNS or the client is simply not getting messages reliably when the screen is locked or the app backgrounded, as the network restrictions very much apply to those clients as well (and to everything, to save power by sleeping the NICs).