Method _add_reader

Lib/asyncio/selector_events.py:921–924

(self, fd, callback, *args)

        return sum(map(len, self._buffer))

    def _add_reader(self, fd, callback, *args):
        if not self.is_reading():
            return
        self._loop._add_reader(fd, callback, *args)


class _SelectorSocketTransport(_SelectorTransport):