103 early hints not working

Hi, we’ve enabled 103 early hints in our Cloudflare dashboard, but I’m not seeing them in our website responses. Our website does emit prefetch/preload links in the headers, and the dom.

DebugBear validator shows we have valid prefetch/preload links in headers and dom: https://www.debugbear.com/resource-hint-validator?url=https%3A%2F%2Fsyncwith.com

This site confirms there are now 103 early hints in the response: https://code103.hotmann.de/?url=https://syncwith.com/

Any suggestions? Thanks!

Cloudflare support doesn’t seem to respond ever.

➜  webapp git:(master) curl -X HEAD -I https://syncwith.com    
HTTP/2 200 
date: Thu, 16 Feb 2023 18:15:09 GMT
content-type: text/html; charset=utf-8
link: </build/_assets/app-IOCXCQCK.css>; rel=preload; as=style, <https://www.google-analytics.com/>; rel=preconnect;, <https://www.googletagmanager.com/>; rel=preconnect;, <https://www.facebook.com/>; rel=preconnect;, <https://amp.syncwith.com/>; rel=dns-prefetch;
vary: Accept-Encoding
cf-cache-status: DYNAMIC
referrer-policy: no-referrer-when-downgrade
x-powered-by: Express
x-render-origin-server: Render
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=cspRKzyUAxJkaei5nVAx5g9wvp%2ByS%2Bda%2BXEAf3mpHm4ND00AZpYGCI3IPVVi5kICIwgwCD1yANY4EE1uRqgexSBfXc%2Ba7%2F0qDyq2bwA4PWhPt1JNC9GrKE4aDaPoRA%3D%3D"}],"group":"cf-nel","max_age":604800}
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
cf-ray: 79a8445b0fa2beca-YYC

Hi @cloonan, your correction is incorrect unfortunately. Its “103 early hints”. I also made a mistake in the body of the post, but it seems I am not permitted to edit it. fun.

1 Like

Thanks @cloonan, what do I need to do to be able to fix the mistake in the body of the post? or is that not allowed?

I updated and bumped your permissions, can you see if you can edit it now to ensure I bumped enough?

thanks! Yes I can edit now, cool.