My applications have been pretty successful at using mDNS to advertise and discover services. However, I was looking up documentation and found that Apple has flagged their Bonjour classes as deprecated: https://developer.apple.com/documentation/foundation/bonjour I've been searching, but I haven't found any indication of what I should use instead. What framework am I supposed to use to do mDNS if Apple drops NetService and NetServiceBrowser some time in the future?