ERROR: Unable to download webpage: '' (caused by BadStatusLine("''",))

[vonamann]

Mac OS X 10.9.5, youtube-dl installed from Mac Ports. I cannot remember exactly when it started, maybe a week or two ago. When I try to download any video from YouTube, I get this error. I tried to build with Python 2.7 and 3.4, download from "http://" and "https://" with same result.

$ youtube-dl --verbose -F http://www.youtube.com/watch?v=znK652H6yQM
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', '-F', 'http://www.youtube.com/watch?v=znK652H6yQM']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.10.13
[debug] Python version 2.7.8 - Darwin-13.4.0-x86_64-i386-64bit
[debug] Proxy map: {'http': 'http://localhost:8080', u'https': 'http://localhost:8080'}
[youtube] Setting language
WARNING: unable to set language: ''
[youtube] znK652H6yQM: Downloading webpage
ERROR: Unable to download webpage: '' (caused by BadStatusLine("''",)); please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.
  File "/opt/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 226, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/opt/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1266, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 404, in open
    response = self._open(req, data)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 422, in _open
    '_open', req)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 382, in _call_chain
    result = func(*args)
  File "/opt/local/bin/youtube-dl/youtube_dl/utils.py", line 645, in https_open
    return self.do_open(HTTPSConnectionV3, req)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 1181, in do_open
    h.request(req.get_method(), req.get_selector(), req.data, headers)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 995, in request
    self._send_request(method, url, body, headers)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 1029, in _send_request
    self.endheaders(body)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 991, in endheaders
    self._send_output(message_body)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 844, in _send_output
    self.send(msg)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 806, in send
    self.connect()
  File "/opt/local/bin/youtube-dl/youtube_dl/utils.py", line 637, in connect
    self._tunnel()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 767, in _tunnel
    (version, code, message) = response._read_status()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 373, in _read_status
    raise BadStatusLine(line)

[dstftw]

Most likely this is caused by your proxy, try without it. Feel free to open anew issue if it does not help.