docs: def _endpoint_to_target(self, endpoint):
          """Convert a URL into a host / port, or into a path to a unix domain socket
  
          Args:
              endpoint (str): A URL parsable by urlparse
  
          Returns:
              3 item tuple: (host, port, path).
              host and port will None, and path will be not None if a a unix domain socket URL is passed
              path will be None if a normal TCP based URL is passed
  
          """
          parsed = urlparse.urlparse(endpoint)
          scheme = parsed[0]
          hostport = parsed[1]
  
          if 'unix' in scheme:
              return (None, None, unquote(hostport))
  
          if scheme == 'https':
              target_port = 443
          else:
              target_port = 80
  
          (target_host, target_port) = self._split_hostport(hostport, default_port=target_port)
          return (target_host, target_port, None)