in the main folder, simple_wifi.cpp is the file for server part.
in the client part,, in a new terminal use "netcat ip socket" like netcat 10.42.0.181 3000 this if connected successfully, shows
Hello, congrats, server conn is on, send data < -- type value like 9 or any from 0 to 9, response of ringlight controller will appear. --to end connection, type second inputx, like 5x. this will show goodbye and end socket connection.