How to get a list of in-app purchases from the Apple server

I am developing an iPhone app which provides in-app purchases. However, after creating a product ID for an in-app purchase, I must manually update the list in either the client, or on a custom server. This seems a little odd.

Is their any web service that I can use to directly communicate with Apple's server in order to get a list of registered product IDs dynamically?

Or is there an API that my iPhone client can use to communicate with StoreKit to get the list of registered product IDs fro开发者_如何学Cm Apple's server?

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No there isn't :

From the In App purchase Programming Guide

Apple recommends you retrieve product identifiers from your server, rather than including them in a property list. This gives you the flexibility to add new products without updating your application.

You can find a similar answer here :

StoreKit to return all product IDs

Hope this helps, Vincent