[IP, Port] via: Command line args (server.h) || (User:/socket$ IP Port)  - or
                Keyboard input (scanf) || (fgets)
                Config file (IP-Port.config)

Send 'R' or 'r' to client every three seconds

Calculates round trip time (RTT)
Displays RTT on its monitor
Time resolution must be micro or submicro seconds

Without interruption...
Recieve 'E' or 'e' from keyboard input
Send 'E' or 'e' to client
Recieve 'O' or 'o' from client
Send 'O' or 'o' to client
Exit 

"ACK at hh:mm:ss:dd" - hours, minutes, seconds, milliseconds
Random number(0,100)
Display some useful information on its monitor.

Without interruption...
Recieve 'E' or 'e' from server
Send 'O' or 'o' to server
Recieve 'O' or 'o' from server
Exit