fun with websockets.
Startup
rackup, or ruby app.rb, or run the Procfile or whatever
What does it
any realistic URL will open up a chatroom on that port via the magic of websockets. Limited to whatever the hard-limit of available ports is (something like 65k..?).
e.g. localhost:3000/4040 for chatting with others on port 4040
Misc
totally not production ready or secure or scaleable or any of that jazz.