Open Radar

 
Area:
StoreKit

Summary:
When trying to fetch a userToken from SKCloudServiceController an SKErrorDomain error 7 is always returned. As it is fetching from a web service, it is expected that it won't always be available 100% of the time but I haven't been able to retrieve a valid token in several weeks. This doesn't seem to be limited to a change in the iOS 11 beta as I was able to retrieve a token in beta 3 but then it stopped working in beta 3 with no code change - definitely feels like an issue on the server side which the SKErrorDomain 7 alludes to.

There are several people having the same issue:

- https://forums.developer.apple.com/thread/82454
- https://forums.developer.apple.com/message/244924

Steps to Reproduce:
1. Request access to the user's Apple Music account / media library using SKCloudServiceController.requestAuthorization

2. Fetch a developer token from my server at https://clients.dodoapps.io/playlist-precis/generate-token.php

3. Request a user token with:

let controller = SKCloudServiceController()
        controller.requestUserToken(forDeveloperToken: developerToken) { (userToken, error) in {

}

Expected Results:
At this point I should have a userToken to use with the Apple Music API

Observed Results:
The operation couldn't be completed (SKErrorDomain error 7)

Version:
iOS 11 developer beta 4 (15A5327g)

Notes:
sysdiagnose attached. Error occurred at 09:11 BST within the app 'UserTokenTest'. I have also attached an example project to reproduce the issue.

Configuration:
Tested on iPhone 5S and iPad Pro (1st gen 12.9") running both iOS 11 developer beta 3 and developer beta 4.