How to use the pyhik.constants.READ_TIMEOUT function in pyHik

def alert_stream(self, reset_event, kill_event):
        """Open event stream."""
        _LOGGING.debug('Stream Thread Started: %s, %s', self.name, self.cam_id)
        start_event = False
        parse_string = ""
        fail_count = 0

        url = '%s/ISAPI/Event/notification/alertStream' % self.root_url

        # pylint: disable=too-many-nested-blocks
        while True:

            try:
                stream = self.hik_request.get(url, stream=True,
                                              timeout=(CONNECT_TIMEOUT,
                                                       READ_TIMEOUT))
                if stream.status_code == requests.codes.not_found:
                    # Try alternate URL for stream
                    url = '%s/Event/notification/alertStream' % self.root_url
                    stream = self.hik_request.get(url, stream=True)

                if stream.status_code != requests.codes.ok:
                    raise ValueError('Connection unsucessful.')
                else:
                    _LOGGING.debug('%s Connection Successful.', self.name)
                    fail_count = 0
                    self.watchdog.start()

                for line in stream.iter_lines():
                    # _LOGGING.debug('Processing line from %s', self.name)
                    # filter out keep-alive new lines
                    if line: