How to check on in-app purchase server in ios app?

Question

iOS

Tell me, who came across a check on the server for making a payment inside an iOS application? Is there Russian-language documentation? It's easy with Google. But iOS does not lend itself to me.

Answer 1

Apple described the recipe check with examples
https://developer.apple.com/library/ios/releasenot...
Sends the recipe from the application to its server.
Your server requests the appstore to validate the purchase

Answer 2

Is there a ready-made library for NodeJS?