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Security CDN

Custom HTTP Response Headers

The Custom HTTP Response Headers feature allows you to attach custom response header fields when the edge node returns content to the client.
When the requested content is not cached at the edge, Security CDN (SCDN) will fetch it from the origin server. To help users identify the response information from the origin, you can configure custom origin response headers, which rewrite specific HTTP header fields in the origin response.


What is an Origin Response?

When an edge node sends a request to the origin server, the HTTP response returned by the origin is called an origin response.
Configuring custom origin response headers only affects the response from the origin to the edge node, and does not modify the response from the edge node to the client.


Configuration Instructions

Header Description Content Constraints
Cache-Control Specifies caching mechanisms for requests/responses. No Chinese. Length: 1–1000 characters.
Content-Disposition Specifies default filename for file download in the client. No Chinese. Length: 1–1000 characters.
Content-Language Specifies the language of the response content. No Chinese. Length: 1–1000 characters.
Expires Specifies the expiration time of the response object. No Chinese. Length: 1–1000 characters.
Access-Control-Allow-Origin Specifies allowed origins for cross-origin requests. No Chinese. Length: 1–1000 characters.
Access-Control-Allow-Methods Specifies allowed HTTP methods for cross-origin requests. No Chinese. Length: 1–1000 characters.
Access-Control-Allow-Credentials Indicates whether cookies are allowed in cross-origin requests. No Chinese. Length: 1–1000 characters.
Access-Control-Max-Age Specifies how long the results of a preflight request can be cached. No Chinese. Length: 1–1000 characters.
Access-Control-Expose-Headers Specifies which headers can be exposed to the client in cross-origin responses. No Chinese. Length: 1–1000 characters.
Custom Any other header not listed above. Response Header Name: 1–100 characters, llowed characters are letters, digits, hyphens (-), and underscores (_); no Chinese
Value: No Chinese. Length: 1–1000 characters.

Configuration Guide

  1. Log in to the Security CDN Console.

  2. In the left navigation bar, go to Speed & Cache > Acceleration, and access the Global Acceleration Policy page.

    速度与网络全局配置1.png

  3. Click the Domain Acceleration Template tab at the top to switch to the template management page.

    速度与网络模板配置1.png

  4. In the template list, select the template to be modified and click Policy Management in the Actions column.

  5. Scroll down to the Origin Configuration - Custom HTTP Response Headers section and enable the feature.

    自定义HTTP响应头1.png

  6. Click Add to create a new custom HTTP response header rule.

    自定义HTTP响应头2.png

  7. Save the configuration. Once effective, the custom headers will be applied to this template.

Need help? Contact our support team at support@edgenext.com.

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