Kubernetes is migrating from SPDY to WebSockets
https://kftray.app/blog/kubernetes-spdy-to-websockets
I maintain an app that builds on top of kubernetes port forwarding, so i track KEP-4006 because the streaming protocol underneath keeps changing. I wrote about this back in april 2024 around Kubernetes 1.30, and six releases later it's changed enough to be worth another look.
https://kftray.app/blog/kubernetes-spdy-to-websockets