Traffic Fails when Proxied via Cloudflare

Website, Application, Performance DNS & Network
1

What is the name of the domain?

https://csproxy.cyberstash.com:8443

What is the error number?

520

What is the error message?

Web server is returning an unknown error

What is the issue you’re encountering

unable to access page

What steps have you taken to resolve the issue?

Removed cloudflare as proxy and it works than added Cloudflare as proxy, it fails

What feature, service or problem is this related to?

I don’t know

What are the steps to reproduce the issue?

Removed cloudflare as proxy and it works than added Cloudflare as proxy, it fails

2

Hi,

Error 520 occurs when the origin server returns an empty, unknown, or unexpected response to Cloudflare.

As a resolution, Contact your hosting provider or site administrator and request a review of your origin web server error logs for crashes and to check for these common causes:

  • Origin web server application crashes
  • Cloudflare IPs :arrow_upper_right: not allowed at your origin
  • Headers exceeding 16 KB (typically due to too many cookies)
  • An empty response from the origin web server that lacks an HTTP status code or response body
  • Missing response headers or origin web server not returning proper HTTP error responses :arrow_upper_right:.

For further information, kindly review this document : Error 520: web server returns an unknown error

Thank you !

3

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