[Bug] HTTP error 503 when trying to login to crunchyroll.

[ipat8]

When trying to login to crunchroll, I get a 503 service unavailable error. I have verified that when trying to download and not logging in I am able to download. Logs below:

MBP-ES158PJEUC:~ moose$ youtube-dl --version
2017.01.02
MBP-ES158PJEUC:~ moose$ youtube-dl http://www.crunchyroll.com/my-little-monster/episode-12-the-year-draws-to-a-close-612235 --username XXXXX --password XXXXXX --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'http://www.crunchyroll.com/my-little-monster/episode-12-the-year-draws-to-a-close-612235', u'--username', u'PRIVATE', u'--password', u'PRIVATE', u'--verbose']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.01.02
[debug] Python version 2.7.10 - Darwin-16.3.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 3.2.2, ffprobe 3.2.2
[debug] Proxy map: {}
[Crunchyroll] Downloading login page
ERROR: Unable to download webpage: HTTP Error 503: Service Temporarily Unavailable (caused by HTTPError()); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 406, in _request_webpage
return self._downloader.urlopen(url_or_request)
File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2001, in urlopen
return self._opener.open(req, timeout=self._socket_timeout)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 437, in open
response = meth(req, response)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 550, in http_response
'http', request, response, code, msg, hdrs)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 475, in error
return self._call_chain(*args)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain
result = func(*args)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 558, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
MBP-ES158PJEUC:~ moose$

I believe this may have to do with the cloudflare DDOS protection protecting the login page.

[yan12125]

See #11572. There are quite a few discussions for possible workarounds.