This is a simple utility that takes 4 arguments:

• a network interface or an IP address
• a port
• a service type
• a hostname

It then advertises:

• the IPv4 address (or the one of the specified interface if one is found)
• the specified port
• the hostname

over mdns as service of the specified type. The hostname is included in the response so that the client can identify this unique instance.

Example usage:

go run . --port 8000 --interfaceName enp121s0 --serviceType _kcrypt._tcp --hostName myserver.local

or

go run . --port 8000 --address 192.168.1.100 --serviceType _kcrypt._tcp --hostName myserver.local

In the context of kcrypt-challenger, this tool can be used to make a regular kcrypt challenger server be discoverable in the local network. See original spike for more: kairos-io/kairos#2069