The request is for data that the user is actively waiting for.
- iOS 12.0+
- macOS 10.14+
- UIKit for Mac 13.0+Beta
- tvOS 12.0+
- watchOS 5.0+
This service type’s priority is higher than
NSURLNetwork. Use this service type for interactive situations where the user is anticipating a quick response, like instant messaging or completing a purchase.