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HTTP/2 Configuration

Last updated: 2024-10-30 16:02:45

Overview
HTTP/2 (HTTP/2.0) is upgraded from HTTP/1.1. Compared with HTTP/1.1, it introduces a range of optimization features, including binary framing, multiplexing, header compression, and server push. These features greatly optimize web performance and reduce data exchange latency. Before enabling HTTP/2 configuration, you need to configure an HTTPS certificate.
Prerequisites
You have logged in to the CSS console.
You have added a playback domain name.
To enable HTTP/2, ensure that HTTPS is correctly configured and enabled, as HTTP/2 depends on HTTPS. Complete the SSL certificate configuration and enable HTTPS before setting HTTP/2. For details, see HTTPS Configuration.
Note:
If you are configuring an HTTPS certificate for the first time, wait until the certificate configuration is completed and takes effect before enabling HTTP/2.
If you disable the HTTPS certificate feature, the HTTP/2 settings will be automatically disabled and cannot be enabled.
When HTTP/2 is enabled, if the HTTPS certificate feature is disabled, HTTP/2 will be automatically disabled.
Notes
Currently, only HTTP/2 access is supported. HTTP/2 origin-pull is not supported.
If the domain name's service region is global, the HTTP/2 configuration will take effect globally. Separate configurations inside and outside the Chinese mainland are not supported.
Configuration Guide
Enabling or Disabling HTTP/2 Configuration
1. Enter Domain Management, click the playback domain name you want to configure or Manage on the right to enter the domain name detail page.
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2. Click Advanced Configuration. In the HTTP/2 Configuration area, click 
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 to enable or disable the HTTP/2 feature.
Note:
Complete the SSL certificate configuration and enable HTTPS before enabling HTTP/2 in the HTTP/2 Configuration area.
The HTTP/2 feature will take effect approximately 15 minutes after configuration.
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When you highlight the switch, HTTP/2 is enabled.
When you turn the switch gray, HTTP/2 is disabled and the HTTP/2 configuration is automatically invalidated.
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