need simple client/server connect to learn

hi im trying to learn to make multiplayer game in javascript.

i need the very simple sample like that:

starting a server connection to server and send message "a".

where i'd look , samples is very complex.

start a server connect to server with a client and client send message to server "a"


Take one day and read the documentation. Start with the page named "Networked Multiplayer" in the Unity Manual. It has several links to more detailed pages. From there, you'll start with the Network class.