DNSServiceRegister
DNSServiceRegister is a function in Apple's DNS Service Discovery (DNS-SD) API, commonly known as Bonjour. It is used to publish a network service instance on the local network via multicast DNS (mDNS) and DNS-SD. The function registers a service with a specific name, type, domain, and port, and can include TXT records to convey additional metadata.
The API signature (in C) includes parameters for a DNSServiceRef, flags, network interface index, the instance
The registration is asynchronous. A completion callback informs success or failure and may supply the finalized
Usage typically involves integrating the DNSServiceRef with a run loop or dispatch mechanism to handle callbacks.