A server to fingerprint http2 connections, implemented using a Python socket server.
To run on localhost generate a self signed certificate for localhost and place the files in the certs directory (localhost.crt and localhost.key). Make sure to trust the self signed certificate.
Run python src/main.py (or python3 src/main.py if on mac) and visit https://localhost:443 in your browser to see the fingerprint.
Ignore any certificate errors.
This works by having a socket pretend to be a real http2 server, communication is only implemented as far as needed to determine the fingerprint. Although not a full http2 implementation (as there is no state machine), it could technically be extended to that.
If you are interested in more than just the standard fingerprint you can view all of the frames sent by the browser in the process method in the src/connection.py file.