BOOL, read-only.

Available inall subroutines.

Whether or not the request was made using HTTP/2.

Try it out

fastly_info.is_h2 is used in the following code examples. Examples apply VCL to real-world use cases and can be deployed as they are, or adapted for your own service. See the full list of code examples for more inspiration.

Click RUN on a sample below to provision a Fastly service, execute the code on Fastly, and see how the function behaves.

H2 Server Push

Send required resources along with page responses, before the resources are requested by the browser. Generally no longer a recommended practice.