Reason using PORT 5556

[anuarrozman]

Hii, I would like to ask about PORT you are using. Is there any specific reason you are using PORT = 5556 ?

This is located inside esp-homekit/src/server.c

#define PORT 5556

[HomeACcessoryKid]

I would say the correct port is 661 since the protocol is HAP and that name is registered as such on https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?&page=13 . But anyhow, any number will work since that is the point of the mdns system.

[anuarrozman]

Thank you for your reply. If there's two devices with same port number, is it gonna be a problem ? Like suddenly undiscoverable.

[maximkulkin]

Two devices will have unique IP addresses, so it should not be a problem.