Re: [ServiceWorker] What's the interaction with referrer policy (#404)

1) It seems for the initial load the referrer policy is that of the document or worker that invokes `register()`. Subsequent loads for updates won't have a referrer, unless perhaps `update()` was invoked. Depends a bit on how that is defined. @jungkees should know.

2) The service worker can figure out what the page wanted as referrer through `Request.prototype.referrer`. However, the service worker currently has no way to pass this through. For that we would need to allow setting the referrer to any same-origin URL I think.

3) That uses the referrer policy of the service worker itself. Just like fetches use the CSP policy of the service worker.

---
Reply to this email directly or view it on GitHub:
https://github.com/slightlyoff/ServiceWorker/issues/404#issuecomment-72060949