Unlike caret_enum!, these types are for use with things like cell
commands or certificate types, where the entire space of integer
values is possible, and only some are recognized.
Arti is a rust tor implementation. It's project I've been working
on for a few months now, in weekends and in spare time. It doesn't
speak the tor protocol yet, and it doesn't connect to the network at
all.
It needs much more documentation and testing, but I'm just about
ready to show it to others. See the README.md for a description of
what is there and what isn't.