Received the email from Cloudflare.
The Cloudflare edge supports the draft version of the IETF QUIC and HTTP/3 standards. You can read more about HTTP/3 (including how to configure clients like Google Chrome and curl to use it) on our blog.
Here, I load phpbbchinese.com at Firefox browser. Checked the certificate and connection.
- Go to Cloudflare dashboard.
- Open the site
- Click tab SSL/TLS
- Click Edge Certificate
- Enable TLS 1.3 + 0RTT
That is all.