Maybe anyone faced a similar problem. We have a kubeapi proxy which impersonates users using sso. Kubectl tool works just fine with any commands unless you do tail -f

I do see that app data is coming back every 1-5 seconds, but to output it takes ~ 45 seconds.

We use http/server from standard go packages and our proxy is based of https://github.com/ericchiang/kube-oidc/issues

TCP Dump attached. Thanks