ACMEasync

AsyncIO ACME client for Python 3.

Why?

Moar async moar better. Seriously though, I wanted to utilize Python's asyncio to create an automatically certifying proxy server that "just works".

How?

You can use the library as is, see acmeasync/__main__.py and acmeasync/certbot2.py as guides for spinning your own implementations, or use the built in tls reverse proxy (currently raw TCP only).

To run the proxy:

export DOMAINS="example.com,example.net"
export PORT=80 # or whatever port you wish to run the ACME challenge http server on, you need root to serve on 80, or you can forward 8080 if you're running in a docker container for example.
export EMAIL="youremail@example.com"
export PROXIES="8081:towel.blinkenlights.nl:23,8082:towel.blinkenlights.nl:23" # format: localport:remotehost:remoteport,...
export DIRECTORY_URL="https://acme-v02.api.letsencrypt.org/directory"
acmeleproxy

It's recommended you run as root so that proxy processes can drop privileges and lose access to your private keys, but this is optional.

API documentation incoming soon...

But why Python?

Yeah, I know, the GIL, the proxy server uses multiprocessing to spawn a subprocess per connection, which should give much better performance. This kinda thing exists the nodejs world already, why not python too?

Requirements

Pulled in by setup.py:

• acme
• aiohttp
• aiohttp-requests

Required from your OS:

• python3-openssl