I've created a fixed version of my script that makes sure to close the connection. I'm posting it here in case anyone else has grief with using Python's rcon library to communicate with Factorio before or after the new release or otherwise has problems with Python+RCON and has found this thread in ...

Excellent, thanks!

I should have figured that I was over-complicating it in pondering a solution. I even had a watch-tally of relevant netstat stuff, but "just way too many open connections" didn't register on me.

On my end, it sounds like I'll still need to double-check available options for the ...

I think that I have managed to reliably crash my Factorio server by steadily making RCON calls

Platform: Linux (Headless Server)
Version: 1.1.53
Mods: None

Server command:

/home/redacted/.local/factorio-server/bin/x64/factorio --start-server crashtest.zip --rcon-port 5000 --rcon-password foobar ...