selector_events.py 文件源码

def sock_sendall(self, sock, data):
        """Send data to the socket.

        The socket must be connected to a remote socket. This method continues
        to send data from data until either all data has been sent or an
        error occurs. None is returned on success. On error, an exception is
        raised, and there is no way to determine how much data, if any, was
        successfully processed by the receiving end of the connection.

        This method is a coroutine.
        """
        if self._debug and sock.gettimeout() != 0:
            raise ValueError("the socket must be non-blocking")
        fut = futures.Future(loop=self)
        if data:
            self._sock_sendall(fut, False, sock, data)
        else:
            fut.set_result(None)
        return fut