The identifier for the shared container into which files in background URL sessions should be downloaded.
- iOS 8.0+
- macOS 10.10+
- tvOS 9.0+
- watchOS 2.0+
To create a URL session for use by an app extension, set this property to a valid identifier for a container shared between the app extension and its containing app.
For information about app extensions, see App Extension Programming Guide.
Setting General Properties
The background session identifier of the configuration object.
The type of network service for all tasks within sessions based on this configuration.
A Boolean value that determines whether connections should be made over a cellular network.
A Boolean value that indicates whether the session should wait for connectivity to become available, or fail immediately.