Iirc http2 is with ssl only, you'll need to set nginx to offer the content over https
LibreWolf
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LibreWolf is designed to increase protection against tracking and fingerprinting techniques, while also including a few security improvements. LibreWolf also aims to remove all the telemetry, data collection and annoyances, as well as disabling anti-freedom features like DRM. If you have any question please visit our FAQ first: https://librewolf.net/docs/faq/
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Thanks @Malix@sopuli.xyz,
Actually, no HTTP/2 do not require SSL/TLS!
Although the standard itself does not require usage of encryption,[46] all major client implementations (Firefox,[47] Chrome, Safari, Opera, IE, Edge) have stated that they will only support HTTP/2 over TLS
~source:https://en.wikipedia.org/wiki/HTTP/2#Encryption~
it's Mozilla etc.. that force it !
WebPages hosted on the TOR Network (for example) do not need SSL/TLS certificates ! so what we can't have the benefit of HTTP/2 WTF
To the developers of LibreWolf, can you solve this limitation ?