Disabling proxy_buffering not working

[Yuhao Zhang]

Hi All,

I am facing this issue where proxied server's response is buffered before sending back to the request client, even when proxy_buffering is disabled.

I also tried setting "X-Accel-Buffering: no" header on the response, but it didn't work.

I posted the issue on ingress-nginx github repo, since It is what I am using on Kubernetes. However, now I think the root cause is in the underlying nginx. The ingress controller did its job correctly, which is configuring nginx.

The full story and a reproducible example can be found here: https://github.com/kubernetes/ingress-nginx/issues/4063

The nginx version used by the controller is 1.15.6

Thank you,
Yuhao
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