Paper: https://www.blackhat.com/docs/eu-17/materials/eu-17-Shuster-Passive-Fingerprinting-Of-HTTP2-Clients-wp.pdf

Example implementation: https://tls.peet.ws/

Can be added to https://github.com/plabayo/rama/tree/main/rama-net/src/fingerprint with implementation in ./akamai/h2.rs

You can look at https://github.com/plabayo/rama/blob/main/rama-net/src/fingerprint/ja4/http.rs for an example

In a file like https://github.com/plabayo/rama/blob/main/src/cli/service/echo.rs you should be able to find out how to get access to all required info.

Please also add unit tests with inline docs