Thread by @ErrataRob

So I've written a small sample web server, as one does.

This one is written in Lua on top of a weird integration of Lua-in-C using coroutines.
github.com/robertdavidgra…
github.com/robertdavidgra…

At some point I'm going to stop playing around and add Lua scripting into masscan. Lua is a language (like JavaScript, Ruby, Python, etc.) that's easy to integrate into things. It's integrated into important cybersec tools like nginx, Wireshark, Snort, nmap, and World of Warcraft

Why it's cool for masscan, nginx, and nmap is that it supports massive numbers (millions?) of user-mode threads called "coroutines" that have only about 1k of overhead per thread.

In the above sample program, when the thread does a socket:receiveline(), it actually exits the script, returning control to C, which then has a dispatch loop waiting for data to arrive, to then resume the script with the results.

So it's not an example "how best to write a web server", but "how to do things a certain way", using the extremely well-known problem of a web server to demonstrate.

Anyway, the linked project has a bunch of minimal programs for demonstrating integrating Lua into a C program, each focused on a different aspect of that. I don't know if it's useful to anybody else:
github.com/robertdavidgra…