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Update troubleshooting-cloudflare-5xx-errors.md

Open gpoulton opened this issue 1 year ago • 2 comments

Spent the last day trying to debug a case where blocking http traffic causes some browsers (eg Safari on iOS) to display CloudFlare's 522 page instead of retrying on https. I'm mentioning it here in case it happens to other people.

Summary

Added one line to the 522 section.

Screenshots (optional)

n/a

Documentation checklist

gpoulton avatar Jul 28 '24 10:07 gpoulton

Hello, If the origin is blocking HTTP port 80 an HTTP Error 521 would be thrown then (as the connection between Cloudflare and the origin would be terminated instead of timing out). The behavior you're describing is odd. Have you raised a Community post about it? What was the fix in your case?

ngayerie avatar Jul 29 '24 10:07 ngayerie

Maybe it's some weirdness in the specific way my ISP (Ionos)'s firewall works? The fix was to enable port 80 on the firewall.

cheers, Gareth

On Mon, 29 Jul 2024 at 17:34, Nic @.***> wrote:

Hello, If the origin is blocking HTTP port 80 an HTTP Error 521 would be thrown then (as the connection between Cloudflare and the origin would be terminated instead of timing out). The behavior you're describing is odd. Have you raised a Community post about it? What was the fix in your case?

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gpoulton avatar Jul 29 '24 13:07 gpoulton

👋Hi there, we’re going to close this PR. All PRs prior to August 12 need to be reworked due to the platform migration to Astro.

KimJ15 avatar Sep 27 '24 15:09 KimJ15