this post was submitted on 06 Jul 2023
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Has anyone implemented it in a physical device?
e.g. RFC3514 (an 'evil' flag you can set in malicious packets so a firewall knows to drop them) was actually used by a few people to see what would happen, with interesting results.
As it turns out, I could find no physical implementations of HTCPCP or the tea-brewing extension. The original protocol is somewhat incomplete, which is probably the main issue; also, any modern appliance would probably talk its own protocol encoded in JSON or similar.
While researching for the talk, I did find Hacked-Together Coffeepot Control Protocol which was a UMaryland hackathon project in 2016. They won the prize for "most technologies used in their tech stack", which is ...something.
Oh, how I miss the days when hackathons would result in such things! In my country they are VC-pitch-a-thons. No actual things are built.
“most technologies used in their tech stack” sounds like a lot of fun to implement!
It's true though, if I designed an IoT coffeepot it would probably use something like JSON over MQTT or UDP. Although I would likely also connect it to a hardware RNG so its caffeination can exist as a quantum superposition of states until I drink the coffee. I hear that makes it taste better.