title: AttributeError: 'Context' object has no attribute 'wrap_socket'
body: <p>I am trying to set up a Flask server that uses an OpenSSL context.
  However, since I moved the script on a different server, it keeps throwing the following error, no matter if I am using Python 2.7 or 3.4 and no matter which SSL method I chose (SSLv23 / TLSv1/...):</p>
  
  <pre><code>  File "/usr/lib/python3.4/threading.py", line 920, in _bootstrap_inner
      self.run()
    File "/usr/lib/python3.4/threading.py", line 868, in run
      self._target(*self._args, **self._kwargs)
    File "/usr/local/lib/python3.4/dist-packages/werkzeug/serving.py", line 602, in inner
      passthrough_errors, ssl_context).serve_forever()
    File "/usr/local/lib/python3.4/dist-packages/werkzeug/serving.py", line 506, in make_server
      passthrough_errors, ssl_context)
    File "/usr/local/lib/python3.4/dist-packages/werkzeug/serving.py", line 450, in __init__
      self.socket = ssl_context.wrap_socket(self.socket,
  AttributeError: 'Context' object has no attribute 'wrap_socket'
  </code></pre>
  
  <p>The according code below:</p>
  
  <pre><code>if __name__ == "__main__":
          context = SSL.Context(SSL.SSLv23_METHOD)
          context.use_privatekey_file('key.key')
          context.use_certificate_file('cert.crt')
          app.run(host='0.0.0.0', port=80, ssl_context=context, threaded=True, debug=True)
  </code></pre>
  
  <p>Thank you very much in advance! I am happy for any help</p>