The simplest chat system in the world using netcat (the openbsd version because of -k). Yet, it supports 4 byte UTF-8 and client dis/re-connects:
Server:
$ nc -k -vnlp <port>
Client:
$ nc <host> <port>
#unix #linux #openbsd
skybert's Blog
Coder of systems, lover of languages, follower of Christ. 台灣女婿