Incorrect Asset URL Generation for Proxy-Enabled Sites

Does this bug occur with reverse_proxy_addresses and trusted_host_patterns properly set?

One more thing: based on your analysis I think this must have changed in that setup after upgrading from 10.0 to 10.1 due to the asset system changes in 10.1. Is that correct?

@cilefen Yes, the parameters are configured.
i can add that in my case i am in a factory site context with several overlays (with BLT 13.7).

Concerning the upgrade from 10.0 to 10.1, I noticed changes in CSS and JavaScript aggregation, but I don't believe it affects our situation.

Assuming this is not a setup or a platform issue:

1. Inject dependencies rather than use the \Drupal service finder.
2. Hash the base URL because it's being concatenated in a string and could contain all sorts of characters.
3. It failed automated tests.

Any commit will be on 11.x (main) and then backported as needed.

The change looks sensible but it needs to be converted to an MR and @cilefen's comments addressed.

🐛 Fix mismatch of $base_url with Symfony request object Needs work may be related to this, or at least an adjacent issue.