> one has to consider that its successor HTTP/2.0
you mean Google's protocol SPDY that was for some reason renamed HTTP despite being completely incompatible and functioning entirely differently and was also made for in-house use by a megacorp and fails to have things like an upgrade mechanism (like HTTP 1.0/1.1 has, and in fact http2 uses to activate itself) which was then botched by browsers wanting to mandate TLS which further complicates debugging on top of all that. 🆗
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