Problem/Motivation
The reverse proxy configuration and documentation in default.settings.php has some minor issues:
- copy/paste errors: most of the comments refer to "client protocol" instead of the setting's actual meaning
- confusing/wrong default values: while most of the commented out $settings code lines have the actual default value, the doc comment has not (e.g. doc: "X-Forwarded-Proto", code/default setting: "X_FORWARDED_PROTO") - verified in Drupal\Core\StackMiddleware\ReverseProxyMiddleware
- unclear difference between "reverse_proxy_header" and "reverse_proxy_forwarded_header" (rfc 7239)
Proposed resolution
Is only a minor issue, but it still takes some time to figure out what's wrong, so it should be fixed by updating the documentation.
Remaining tasks
Needs review / merge.
