Method cb

Lib/asyncio/unix_events.py:455–459

(fut)

    def _sock_add_cancellation_callback(self, fut, sock):
        def cb(fut):
            if fut.cancelled():
                fd = sock.fileno()
                if fd != -1:
                    self.remove_writer(fd)
        fut.add_done_callback(cb)

    def _stop_serving(self, sock):