Socket io and certificate Cloudflare

.good day. On nodejs there are opportunities to work with https (HTTPS | Node.js v19.7.0 Documentation). But for this you need to specify the certificate and certificate key. What should I specify in these fields if I use SSL mode “Full” in the free tariff?

Forgive me for my English, this is Google translator =)

Well, you just need to provide your certificate/key details there. Thats not Cloudflare specific.

The easiest approach might be to simply have an origin certificate issued directly from Cloudflare

https://support.cloudflare.com/hc/en-us/articles/115000479507-Creating-and-managing-certificates-with-Origin-CA