docs: def _attempt_connect(host, port, timeout, verify, **kwargs):
      """
      Internal function to attempt
      :param host: <str> "localhost" or IPAddress
      :param port: <int>
      :param timeout: <int>
      :param verify: <bool>
      :param kwargs: <**dict> rethinkdb keyword args
      :return: <connection> or <NoneType>
      """
      try:
          connection = rethinkdb.connect(host,
                                         port,
                                         timeout=timeout,
                                         **kwargs)
          if verify:
              brain_post(connection)
      except (rethinkdb.errors.ReqlDriverError,
              rethinkdb.errors.ReqlOpFailedError,
              AssertionError):
          connection = None
      return connection