I figured out I need to call "getnameinfo()" to get host and service by specify its socket address. It is POSIX, but looks like not implementated in ESP-IDF.
(service is unrelevant, but host is actually what I'm hunting for)
What is the possible workaround?
Since I'm still really dummy in this advanced level programming. I've to ask you very possibly super native questions, please don't mind.
Cheers
Su