HTTP/2 to Origin
A protocol is a set of rules governing the exchange or transmission of data between devices. One of the most important protocols that run on the human-computer interaction layer, where applications can access the network services, is HTTP (Hypertext Transfer Protocol).
HTTP is a well established protocol that has several versions, and each version adds features that improve performance over the older one. HTTP/1.1 and HTTP/2 are widely deployed on the Internet today. HTTP/1.1 has been around for more than a decade, but in 2015 the IETF (Internet Engineering Task Force) introduced HTTP/2, which introduces several features to reduce page load times. To know more about the differences between HTTP/1.1 and HTTP/2, please refer to HTTP/2 versus HTTP/1.1.
Availability
| Free | Pro | Business | Enterprise | |
Availability | Yes | Yes | Yes | Yes |
Enable HTTP/2 to Origin
At Cloudflare, HTTP/2 connection is enabled by default for Free, Pro and Business customers. It will also be gradually enabled for Enterprise customers from March 19, 2024. For more details, refer to the warning below.
Follow these steps to enable HTTP/2 to Origin:
- Log into the Cloudflare dashboard and select your account.
- Choose the domain that will use HTTP/2 to Origin.
- Select Speed > Optimization.
- Navigate to the Protocol Optimization tab and under HTTP/2 to Origin set the toggle to On.
If the toggle is disabled, or the origin does not support HTTP/2, Cloudflare will initiate an HTTP/1.1 connection.