Cannot open index.html with mailto: or discord: redirect. Why?
I have a Cloudflare Worker that acts as a reverse proxy to my site hosted on Netlify. Everything works perfectly when I use the Worker’s own URL (mirror.example-worker.workers.dev) — all links, including mailto: and discord: redirects, work fine.
However, when I connect my custom domain (example.dev) to the same Worker via Cloudflare DNS, some links start behaving incorrectly:
Links like /ds or /discord, which are supposed to trigger a
Similarly,
The issue seems unrelated to my Netlify mirror itself. This problem only appears when visiting through my custom domain.
If I make a direct GET request via Cloudflare Editor or Postman to https://example.dev/ds, it works correctly and opens Discord.
It looks like there’s a difference in how requests are handled when going through my domain vs. the Worker subdomain. Possible causes I’m considering:
Cloudflare “Proxied” DNS mode interfering
Certain headers being modified or stripped by the Cloudflare proxy
Browser security rules for custom schemes (discord:, mailto:) when accessed via a proxied domain
Question:
How can I make my custom domain behave exactly the same as the Worker URL for these redirects?
However, when I connect my custom domain (example.dev) to the same Worker via Cloudflare DNS, some links start behaving incorrectly:
Links like /ds or /discord, which are supposed to trigger a
discord:using the direct Worker URL works fineSimilarly,
mailto:The issue seems unrelated to my Netlify mirror itself. This problem only appears when visiting through my custom domain.
If I make a direct GET request via Cloudflare Editor or Postman to https://example.dev/ds, it works correctly and opens Discord.
It looks like there’s a difference in how requests are handled when going through my domain vs. the Worker subdomain. Possible causes I’m considering:
Cloudflare “Proxied” DNS mode interfering
Certain headers being modified or stripped by the Cloudflare proxy
Browser security rules for custom schemes (discord:, mailto:) when accessed via a proxied domain
Question:
How can I make my custom domain behave exactly the same as the Worker URL for these redirects?
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