Push notification (push notification) for iOs?

Question

iOS

Please tell me how to organize a push notification for iOS (iOs). Read more about using the library, which one, which one is better, how to connect it, how to connect the certificate, application key, the code itself.

Answer 1

habrahabr.ru/company/ruswizards/blog/156811
https://developer.apple.com/notifications/

Answer 2

Actually, under iOS itself, no third-party libraries are needed, just register a device to receive notifications, receive a token and send it to your server or other service. And from the server side - depending on what you write?
There are gems for ruby, for php there should also be ready-made solutions. Problems begin when you need to clean "rotten" tokens from devices, otherwise APN simply closes the connection. Probably the easiest way is to use some aggregators like http://www.pushapps.mobi, pushwoosh, etc.