See https://tools.wmflabs.org/liangent-php/detectProtocol.php/enwiki
Feel free to move this bug to MediaWiki product if there's some reliable way to check so there while MediaWiki is unaware of it.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=64627
(Consequently this causes a redirect loop in MediaWiki installations on Tool-Lab with $wgSecureLogin = true; and this is why I spotted it)
Ah, interesting. The communication between the proxy and the internal webservers currently occur through HTTP over the (virtual) network (with the proxy taking care of encryption) -- it's not immediately clear to me how this could be hidden from the application.
Is it possible to configure the proxy to add X-Forwarded-Proto, like http://www.geekisp.com/faq/6_65_en.html ?
Looks like this doesn't work anymore, may or may not be caused by tools being additionally proxied to tools-eqiad.
https://tools.wmflabs.org/blankpages/_server.php
[HTTP_X_FORWARDED_PROTO] => http