[Matthias247]

another challenges I can see is wheee to actually store the state of a connection. Even if we just focus on http/1.1 then not all headers will be received at one, and data from previous segments needs to be carried forward. Would it be eBPF maps? Those also seem rather limited for this usecase, and are probably also not extremely fast.

I can imagine getting something to work for http/1.1 - but http/2 with multiplexing and stateful header compression is a completely different beast.