522 error from certain IP address

[hacker1]

What is the name of the domain?

www.javadoc.io

What is the error number?

522

What is the issue you’re encountering

looks like everywhere else is able to access via cloudflare however it’s failing around SF area

What steps have you taken to resolve the issue?

details with logs can be found here

522 from certain cloudflare servers

[Laudian]

Any chance you have at least a business subscription so that you could take live logs?

Can you find out how long it takes until Cloudflare returns the 522? Depending on the type of error, it would either be after 15 or 90 seconds:

@docs

Error 522: connection timed out

Error 522 occurs when Cloudflare times out contacting the origin web server. Two different timeouts cause HTTP error 522 depending on when they occur between Cloudflare and the origin web server:

1. Before a connection is established, the origin web server does not return a SYN+ACK to Cloudflare within 15 seconds of Cloudflare sending a SYN.
2. After a connection is established, the origin web server doesn’t acknowledge (ACK) Cloudflare’s resource request within 90 seconds.

[hacker1]

Unfortunately this is a non-profitable project supporting open source community we cannot afford a business subscription.

For the time delays it’s about 30 seconds from user report.

[Walshy]

Hey, I have identified an issue with something new we’re rolling out which seems to be the cause here. I’m creating an escalation with the appropriate team and will create a ticket on your behalf to track the progress.
Case is 01312891

Sorry for the issue and thanks for the report!