Gets the domain from a CFNetService.
- iOS 2.0+
- macOS 10.2+
- Mac Catalyst 13.0+
- tvOS 9.0+
The CFNetService whose domain is to be obtained; cannot be
A CFString object containing the domain of the CFNetService.
This function gets the domain from a CFNetService.
This function is thread safe. The function gets the data in a thread-safe way, but the data is not safe if the service is altered from another thread.