Method callback

Lib/asyncio/streams.py:241–252

(task)

            res = self._client_connected_cb(reader, writer)
            if coroutines.iscoroutine(res):
                def callback(task):
                    if task.cancelled():
                        transport.close()
                        return
                    exc = task.exception()
                    if exc is not None:
                        self._loop.call_exception_handler({
                            'message': 'Unhandled exception in client_connected_cb',
                            'exception': exc,
                            'transport': transport,
                        })
                        transport.close()

                self._task = self._loop.create_task(res)
                self._task.add_done_callback(callback)