docs: def do_sess_get(self, url):
          """get url by requests synchronized
  
          :param url:
          :type url:
          :return:
          :rtype:
          """
          try:
              res = self.sess.get(url, headers=self.headers['get'], timeout=self.timeout)
              if res.status_code == 200:
                  return res.content
          except (requests.ReadTimeout, requests.ConnectTimeout, requests.ConnectionError) as _:
              zlog.error('failed of: {} with error: {}'.format(url, _))