Origin Protocol

Precautions

• By default, CDN uses HTTP for origin pulls.
• If you have enabled HTTP/2 and set the origin protocol to Same as user, CDN uses HTTPS/1.1 for origin pull.
• If Service Type of your domain name is set to Whole site, CDN does not support TLS 1.3 when using HTTPS for origin pull. Pay attention to the TLS version configured on the origin server.
• When CDN uses HTTPS for origin pull, the supported TLS version depends on the origin server settings. For example, if the origin server supports TLS 1.1 and TLS 1.2, CDN will also support TLS 1.1 and TLS 1.2 for origin pull.

Procedure

1. Log in to the CDN console.
2. In the navigation pane, choose Domains.
3. In the domain list, click the target domain name.
4. Click the Origin Settings tab.
5. Click next to Origin Protocol.
   Figure 1 Origin protocol
   

   Table 1 Parameters

   Origin Protocol	Description
   Same as user	The origin protocol is the same as the client access protocol. For example, if a client accesses CDN using HTTP, CDN also uses HTTP for origin pull.
   HTTP	CDN uses HTTP for origin pull.
   HTTPS	CDN uses HTTPS for origin pull.

6. Select an origin protocol and click OK.

Helpful Links

• Modifying Origin Server Settings
• Modifying the Full Domain Configuration to modify origin protocol settings