You shouldn’t need a hardcoded port number for a newly designed protocol. Register a service name instead, and use SRV or SVCB records in the DNS (and/or ZeroC

You shouldn’t need a hardcoded port number for a newly designed protocol. Register a service name instead, and use SRV or SVCB records in the DNS (and/or ZeroConf). You’ll notice that on the official IANA list of port numbers and service names, there is a separate section, after the numbered ports, listing only service names¹. Just apply for one of those. 1. At the time of writing, starting on page 135 of the HTML version: <https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?&page=135 https://www.iana.org/assignments/service-names-port-numbers/...>