---
title: "Add HTTP headers to the content source request"
sidebar_label: "Add custom HTTP headers"
description: "How to add custom HTTP headers to the request to the content source"
sidebar_position: 5
---

import Formbricks from '@theme/MDXComponents/Formbricks'

# Add custom HTTP headers to a request to the content source

You can add HTTP headers to a request to the content source to pass additional information.

1. In the [control panel](https://my.selectel.ru/cdn-v3), on the top menu, click **Products** and select **CDN**.

2. In the **CDN Resources** section, open the CDN resource page → **Headers** tab.

3. In the **Source headers** block, click **Add header**.

4. Enter the header name. You can use Latin letters, digits, underscores, and hyphens.

5. Enter the header value. You can use letters, numbers, underscores, dots, forward slashes, colons, hyphens, equal signs, and spaces. Spaces can only be added within the value and between words. Do not put a space at the beginning or end of the value.

6. If you need to add another header, click **Add header** and repeat steps 4–5.

7. Click **Apply**. While settings are being applied, the CDN resource enters the `PROCESSING` status. You cannot apply other settings during this time. Settings take effect when the CDN resource transitions to `ACTIVE` status.

8. [Clear the CDN resource cache](/cdn/content/cleanup-cache.mdx).

<Formbricks />