Created
July 6, 2025 14:24
-
-
Save cicku/f57e31cc262e2fcb54976faa5675d25a to your computer and use it in GitHub Desktop.
Cloudflare Worker for SaaS provider routing without custom origin server
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // SaaS provider creates different subdomains to handle traffic of different eyeball domains | |
| // Get rid of https://developers.cloudflare.com/cloudflare-for-platforms/cloudflare-for-saas/start/advanced-settings/custom-origin/ | |
| const ORIGINS = { | |
| 'a.com': 'a.cicku.me', | |
| 'b.com': 'b.cicku.me', | |
| 'c.com': 'c.cicku.me', | |
| 'd.com': 'd.cicku.me', | |
| 'e.com': 'e.cicku.me', | |
| 'f.com': 'f.cicku.me' | |
| }; | |
| let target = "" | |
| let response = "" | |
| async function handleRequest(request) { | |
| const url = new URL(request.url); | |
| if (url.hostname in ORIGINS) { | |
| target = ORIGINS[url.hostname]; | |
| url.hostname = target; | |
| response = await fetch(url.toString(), request); | |
| } | |
| else { | |
| response = await fetch(request); | |
| } | |
| const newResponse = new Response(response.body, response); | |
| // add a header for debugging | |
| newResponse.headers.append('x-origin-server', '1'); | |
| return newResponse; | |
| } | |
| addEventListener('fetch', event => { | |
| event.respondWith(handleRequest(event.request)); | |
| }); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment