https://blog.heretic.tech/tcp-handshake-through-proxy/
TCP handshake through a proxy: whose RTT? | Heretic
A reproducible packet experiment shows which endpoint answers a TCP handshake, and why a slow application response alone does not identify a proxy.
tcp handshakeproxywhoserttheretic
https://newsletter.systemdesigncodex.com/p/how-tcp-handshake-works/comments
Comments - How TCP Handshake Works - by Saurabh Dashora
tcp handshakecommentsworkssaurabh
https://networkjourney.com/tag/tcp-3-way-handshake/
TCP 3-Way Handshake - Network Journey
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