How to use the acquisition.protocols.util function in Acquisition

def _read_packet(self):
        """Read a single packet from the data source.

        Returns
        -------
            dict-like object
        """

        assert self._socket is not None

        # Reads the header to get the payload length, then reads the payload.
        header_buf = util.receive(self._socket, dsi.header_len)
        header = dsi.header.parse(header_buf)
        payload_buf = util.receive(self._socket, header.payload_length)
        return dsi.packet.parse(header_buf + payload_buf)

def _read_packet(self):
        """Read a single packet from the data source.

        Returns
        -------
            dict-like object
        """

        assert self._socket is not None

        # Reads the header to get the payload length, then reads the payload.
        header_buf = util.receive(self._socket, dsi.header_len)
        header = dsi.header.parse(header_buf)
        payload_buf = util.receive(self._socket, header.payload_length)
        return dsi.packet.parse(header_buf + payload_buf)