HTTP/2 to origin with Nginx causing 520 errors
Everything's fine with HTTP/1.1 to origin. I think this problem is caused by Nginx's
keepalive_requests.
Probably relevant: https://trac.nginx.org/nginx/ticket/1250
The ticket was closed with the message "HTTP/2 connections now support lingering close mechanism."
Is there a chance that this is a problem on Cloudflare's side? I noticed that this was recently added to Cloudflare's documentation:
Connection multiplexing is currently being rolled out. It will be enabled gradually on Free, Pro and Business zones. This release will be complete by June 15th 2024. Enterprise zones will be enabled at a later stage.https://developers.cloudflare.com/speed/optimization/protocol/http2-to-origin/
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