selector_events.py 文件源码

def _write_ready(self):
        assert self._buffer, 'Data should not be empty'

        try:
            n = self._sock.send(self._buffer)
        except (BlockingIOError, InterruptedError):
            pass
        except Exception as exc:
            self._loop.remove_writer(self._sock_fd)
            self._buffer.clear()
            self._fatal_error(exc, 'Fatal write error on socket transport')
        else:
            if n:
                del self._buffer[:n]
            self._maybe_resume_protocol()  # May append to buffer.
            if not self._buffer:
                self._loop.remove_writer(self._sock_fd)
                if self._closing:
                    self._call_connection_lost(None)
                elif self._eof:
                    self._sock.shutdown(socket.SHUT_WR)