961476 - Firefox prepends www. to percent-encoded Unicode URLs

Status: RESOLVED DUPLICATE of bug 309671

(Core :: Networking, defect)

Description

[Nikolai]

User Agent: Mozilla/5.0 (Windows NT 6.1; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20131205075310

Steps to reproduce:

Open the following link:
http://%D0%BF%D1%80%D0%B5%D0%B7%D0%B8%D0%B4%D0%B5%D0%BD%D1%82.%D1%80%D1%84/


Actual results:

Firefox adds www. in front of the URL and attempts to open http://www.президент.рф/ which doesn't exist.


Expected results:

http://президент.рф/ should have opened.

Comment 1

[dfern]

Retested and confirmed in version 29.0a1 (2014-01-20) [bugday-20140120] on Windows 7 64bit

In Firefox I get http://www.президент.рф/ and server not found
In IE I get the same URL and This page can not be displayed
In Chrome I get http://xn--d1abbgf6aiiy.xn--p1ai/ and the correct site opens

Comment 2

[Gingerbread Man]

Firefox 37.0.1
Location bar shows http://www.президент.рф/ but instead of the site, there's a Server Not Found page saying Firefox can't find the server at www.%d0%bf%d1%80%d0%b5%d0%b7%d0%b8%d0%b4%d0%b5%d0%bd%d1%82.%d1%80%d1%84.

Nightly 40.0a1 (2015-04-06)
Location bar shows http://президент.рф/ but instead of the site, there's a Sever Not Found page saying Firefox can't find the server at %d0%bf%d1%80%d0%b5%d0%b7%d0%b8%d0%b4%d0%b5%d0%bd%d1%82.%d1%80%d1%84.