NAME
	send_datagram - send a datagram

SYNOPSIS
	void send_datagram(string data, string destination, int port)


DESCRIPTION
	Send a UDP datagram to the specified host and udp port.  No hostname
	lookup is done so the destination must be an ip number.
	Only udp port objects can use this function.

SEE ALSO
	kfun/open_port, kfun/send_message, kfun/connect