Form Iran and China Https access is difficult so these two countries use Http for mediawiki projects.
Pdf which is generated by Collection extension has Https link on their internal Link
http://fa.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B1%D8%A8%D8%B1:Yamaha5/bug_of_pdf
I connected to wiki with http but the pdf's links are in https
Version: unspecified
Severity: normal