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Update code from service worker to module worker format #17905
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| Original file line number | Diff line number | Diff line change |
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@@ -10,27 +10,20 @@ products: | |
| - Access | ||
| languages: | ||
| - JavaScript | ||
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| --- | ||
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| This tutorial covers how to use a [Cloudflare Worker](/workers/) to add custom HTTP headers to traffic, and how to send those custom headers to your origin services protected by [Cloudflare Access](/cloudflare-one/policies/access/). | ||
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| Some applications and networking implementations require specific custom headers to be passed to the origin, which can be difficult to implement for traffic moving through a Zero Trust proxy. You can configure a Worker to send the [user authorization headers](/cloudflare-one/identity/authorization-cookie/) required by Access. | ||
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| *** | ||
| --- | ||
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| ## Before you begin | ||
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| * Secure your origin server with Cloudflare Access | ||
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| - Secure your origin server with Cloudflare Access | ||
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| ## Before you begin | ||
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| 1. Log in to the [Cloudflare dashboard](https://dash.cloudflare.com/) and select your account. Go to **Workers & Pages**. | ||
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| 2. If this is your first Worker, select **Create Worker**. Otherwise, select **Create application**, then select **Create Worker**. | ||
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@@ -41,30 +34,26 @@ Some applications and networking implementations require specific custom headers | |
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| 5. Input the following Worker: | ||
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| ```javascript title="Worker with custom HTTP headers" | ||
| addEventListener("fetch", event => { | ||
| event.respondWith(handleRequest(event.request)) | ||
| }) | ||
| ```js title="Worker with custom HTTP headers" | ||
| export default { | ||
| async fetch(request, env, ctx): Promise<Response> { | ||
| const { headers } = request; | ||
| const cfaccessemail = headers.get("cf-access-authenticated-user-email"); | ||
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| async function handleRequest(request) { | ||
| const { headers } = request; | ||
| const cfaccessemail = headers.get("cf-access-authenticated-user-email"); | ||
| const requestWithID = new Request(request); | ||
| requestWithID.headers.set('company-user-id', cfaccessemail); | ||
| const requestWithID = new Request(request); | ||
| requestWithID.headers.set('company-user-id', cfaccessemail); | ||
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| return await fetch(requestWithID); | ||
| } | ||
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| ``` | ||
| return fetch(requestWithID); | ||
| }, | ||
| } satisfies ExportedHandler<Env>; | ||
| ``` | ||
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| 6. Select **Save and deploy**. | ||
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| Your Worker is now ready to send custom headers to your Access-protected origin services. | ||
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| ## Apply the Worker to your hostname | ||
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| 1. Select the Worker you created, then go to **Triggers**. | ||
| 2. In **Routes**, select **Add route**. | ||
| 3. Enter the hostname and zone for your origin, then select **Add route**. | ||
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@@ -79,6 +68,3 @@ The Worker will now insert a custom header into requests that match the defined | |
| "Company-User-Id": "[email protected]", | ||
| "Connection": "keep-alive" | ||
| ``` | ||
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