Function _udp_send

dns/query.py:749–761

Sends the specified datagram to destination over the socket. A Timeout exception will be raised if the operation is not completed by the expiration time.

(sock, data, destination, expiration)

def _udp_send(sock, data, destination, expiration):
    """Sends the specified datagram to destination over the socket.
    A Timeout exception will be raised if the operation is not completed
    by the expiration time.
    """
    while True:
        try:
            if destination:
                return sock.sendto(data, destination)
            else:
                return sock.send(data)
        except BlockingIOError:  # pragma: no cover
            _wait_for_writable(sock, expiration)


def send_udp(