Broadcast Apple Push Notification

Is it possible to broadcast push notifications without services like Urban开发者_如何学C Airship?

Thanks.

Certainly, but you need to implement the entire infrastructure on your own.

http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Introduction/Introduction.html#//apple_ref/doc/uid/TP40008194-CH1-SW1

Edit: You're emphasizing "broadcast" in your question. Urban Airship doesn't do anything special, other than tracking every single device token that has been registered in the lifetime of the application, as well as tracking those tokens which Apple has told it to turn off. The broadcast feature is just them utilizing all that data to send a batch of pushes.

It's all doable on your own, but it's a lot of work. This is why services like Urban Airship exist.

It's easy to set up the backend using this and Rails.