[Firefox] HTTPS Only Mode redirects to https://ipfs-cid.ipfs.localhost/

[da2x]

To Reproduce

1. Enable Use Subdomains in IPFS Companion.
2. Enable Enable HTTPS-Only Mode in all windows. (Bottom of Settings: Security.)
3. Go to https://ipfs.io/

Expected behavior
Should redirect to http://docs.ipfs.io.ipns.localhost:8080/. Firefox may show an interstitial asking you to confirm navigation to an unencrypted website.

Actual behavior
IPFS redirects to https://docs.ipfs.io.ipns.localhost:8080/. The request times out. Firefox never suggests downgrading to HTTP because the browser explicitly navigates directly to HTTPS. (It only prompts when the browser intervenes and attempts to redirect to HTTPS.)

Desktop (please complete the following information):

• OS: Linux
• Browser: Firefox
• Version: 92

[lidel]

@da2x I was unable to replicate this in Firefox 92.0.1 on Linux.

• Do you have any other extensions installed that could do this? (eg. https://www.eff.org/https-everywhere)?
• Does the problem go away when you disable HTTPS-Only mode or add an exeption for docs.ipfs.io.ipns.localhost:8080, as described here?

[da2x]

Do you have any other extensions installed that could do this?

No. Reproduces for me with a clean profile, just those two settings, and the IPFS companion.

Does the problem go away when you disable HTTPS-Only mode

Yes.

or add an exeption for docs.ipfs.io.ipns.localhost:8080, as described here?

The exception thing doesn’t show (indicating that the URL was opened to https: directly instead of being redirected from http: to https:.). I can’t reproduce on Windows, but it reproduces on macOS and Fedora.

[github-actions]

Oops, seems like we needed more information for this issue, please comment with more details or this issue will be closed in 30 days.

[github-actions]

This issue was closed because it is missing author input.

[Mikaela]

I think this was a potential duplicate of #855 or at least related to it.