canBeFulfilledWithAdvisoryKey

Declaration

var canBeFulfilledWithAdvisoryKey: Bool { get }

Discussion

This property is set to true when: 1. Advisory key loading is enabled on the parent AVContentKeySession 2. The key was previously loaded as an advisory key and cached by FairPlay 3. A subsequent request for the same key is made

When canBeFulfilledWithAdvisoryKey is true and makeStreamingContentKeyRequestData returns nil for the key request data, this indicates FairPlay has already cached the key. No request to the key server for a key response is necessary, and the application should simply return from the completion handler.

This property should be checked in the completion handler of makeStreamingContentKeyRequestData(forApp:contentIdentifier:options:completionHandler:) whenever the key request data is nil to distinguish advisory keys from actual errors.