parameters: (self, conn)
return_statement: return conn
docstring: Prepare the ``connection`` for :meth:`urllib3.util.ssl_wrap_socket`
          and establish the tunnel if proxy is used.
docstring_summary: Prepare the ``connection`` for :meth:`urllib3.util.ssl_wrap_socket`
          and establish the tunnel if proxy is used.
docstring_tokens: Prepare the connection for : meth : urllib3 . util . ssl_wrap_socket and establish the tunnel if proxy is used .
function: def _prepare_conn(self, conn):
          """
          Prepare the ``connection`` for :meth:`urllib3.util.ssl_wrap_socket`
          and establish the tunnel if proxy is used.
          """
  
          if isinstance(conn, VerifiedHTTPSConnection):
              conn.set_cert(key_file=self.key_file,
                            cert_file=self.cert_file,
                            cert_reqs=self.cert_reqs,
                            ca_certs=self.ca_certs,
                            assert_hostname=self.assert_hostname,
                            assert_fingerprint=self.assert_fingerprint)
              conn.ssl_version = self.ssl_version
  
          if self.proxy is not None:
              # Python 2.7+
              try:
                  set_tunnel = conn.set_tunnel
              except AttributeError:  # Platform-specific: Python 2.6
                  set_tunnel = conn._set_tunnel
  
              if sys.version_info <= (2, 6, 4) and not self.proxy_headers:   # Python 2.6.4 and older
                  set_tunnel(self.host, self.port)
              else:
                  set_tunnel(self.host, self.port, self.proxy_headers)
  
              # Establish tunnel connection early, because otherwise httplib
              # would improperly set Host: header to proxy's IP:port.
              conn.connect()
  
          return conn
function_tokens: def _prepare_conn ( self , conn ) : if isinstance ( conn , VerifiedHTTPSConnection ) : conn . set_cert ( key_file = self . key_file , cert_file = self . cert_file , cert_reqs = self . cert_reqs , ca_certs = self . ca_certs , assert_hostname = self . assert_hostname , assert_fingerprint = self . assert_fingerprint ) conn . ssl_version = self . ssl_version if self . proxy is not None : # Python 2.7+ try : set_tunnel = conn . set_tunnel except AttributeError : # Platform-specific: Python 2.6 set_tunnel = conn . _set_tunnel if sys . version_info <= ( 2 , 6 , 4 ) and not self . proxy_headers : # Python 2.6.4 and older set_tunnel ( self . host , self . port ) else : set_tunnel ( self . host , self . port , self . proxy_headers ) # Establish tunnel connection early, because otherwise httplib # would improperly set Host: header to proxy's IP:port. conn . connect ( ) return conn