I have an instance where docker is forced on port 80 with SSL termination in a different layer. Because of this, Drupal doesn't respond that the site is using HTTPS so the ACS and SLS reports 'http://' in the metadata.
The change I propose is adding a variable to the config 'sp_force_https', which adds the option of adding 'https = true' to the Url::fromRoute() function options inside of the static function reformatConfig().
Closed: works as designed
3.5
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Recategorizing. (It wasn't a support request, but people who browse the list of support requests may benefit from seeing the title.)