code: def data_received(self, data: bytes) -> None:
          
          # print(data)
          if self._request is None:
              # future = self._loop.create_future()
              self._request = Request(
                  cast(asyncio.AbstractEventLoop, self._loop),
                  self.complete_handle,
                  cast(asyncio.Transport, self._transport),
                  charset=self._requset_charset,
              )
              self._request.parser = HttpRequestParser(self._request)
          self._request.feed_data(data)
docs: socket 收到数据