code: async def _response_handler(self):
          
          if self.debug is True:
              if self.debug is True:
                  print("listenning response!")
          while True:
              try:
                  res = await self.reader.readuntil(self.SEPARATOR)
              except:
                  raise
              else:
                  response = self.decoder(res)
                  self._status_code_check(response)
docs: 监听响应数据的协程函数.`connect`被调用后会被创建为一个协程并放入事件循环.