callback url 308 error

Hi k.elizabeth → ,
you must specify the following in your settings.php file:

$settings['reverse_proxy'] = TRUE;
$settings['reverse_proxy_addresses'] = array($_SERVER['REMOTE_ADDR']);

This issue is described here:
https://www.drupal.org/project/metatag/issues/2842049 📌 urls with http instead of https Needs review

Yes, this issue exists with the following settings in settings.php:

$settings['reverse_proxy'] = TRUE;
$settings['reverse_proxy_addresses'] = array($_SERVER['REMOTE_ADDR']);
$settings['reverse_proxy_trusted_headers'] = \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_FOR | \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_HOST | \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_PORT | \Symfony\Component\HttpFoundation\Request::HEADER_X_FORWARDED_PROTO | \Symfony\Component\HttpFoundation\Request::HEADER_FORWARDED;

This is also all cross-checked against phpinfo:

HTTP Request	GET /admin/reports/status/php HTTP/1.1
Host	REDACTED.com
X-Request-ID	3a240d7e5df3deb587dc3a1874b64a4e
X-Real-IP	REDACTED
X-Forwarded-For	REDACTED
X-Forwarded-Host	REDACTED.com
X-Forwarded-Port	443
X-Forwarded-Proto	https
X-Forwarded-Scheme	https
X-Scheme	https

For this we ended up patching the module to rewrite the formation of the urls, where we hardcode the scheme to https.

I think this issue is more at the drupal core level than the module level, so this may be closed. Though an option (like a checkbox on the settings page) to enforce the preferred scheme in the module would be helpful.