netshell - "Now you too can join in the fun of TCP/IP."

This is netshell, a source-code example intended to show you how to build
a daemon that serves a TCP protocol of some sort, supporting multiple
concurrent clients. It does not fork() to handle concurrent clients;
rather, it uses select() and handles them each in turn.

The code is showing its age. I originally wrote it 4-Sept-1994, and first
published it in 1995. I updated it on 6-Aug-2004 to compile and run on
modern Linux and BSD systems, but I haven't rewritten it to any great
extent, so it still mostly reflects my youthful lack of programming
skills :-) I don't make any claims as to its security, portability,
or robustness -- it's a learning tool; treat it as such.

The code is licensed under the BSD license.