EdgeNext Documentation

Configuration Scenario

The Origin Host is the specific site domain that CDN nodes access on the origin server IP address during origin pulls. By default, the Origin Host matches the acceleration domain. For wildcard domains, the actual Origin Host is the requested domain. You can modify this based on your business needs — ensure the Origin Host has a corresponding site configuration on your origin server, otherwise origin requests will return 404 errors.

Note:

The difference between origin address and Origin Host:

• Origin address: Determines which specific IP address the origin pull request is sent to.
• Origin Host: Determines which specific site on that IP address the origin pull request accesses.

Configuration Guide

Log in to the CDN console. From the menu, select Configuration → Domain Config, then click Details in the Actions column for the target domain. On the domain configuration page, under Origin (second section), you will find the Origin Host setting. It is disabled by default with no configuration:

Configuration Example

Suppose your CDN origin is configured as follows: acceleration domain www.abc.com, origin server www.test.com.

The request flow works as follows:

A user requests http://www.abc.com/test.txt. Since the CDN node does not yet have this resource cached, it resolves www.test.com to get the origin server address — say 1.1.1.1. The CDN node then connects to server 1.1.1.1, accesses the abc.test.com website on that server, retrieves the test.txt file, and returns it to the user.