SYNOPSIS
        void receive_udp(string host, bytes msg, int hostport)

DESCRIPTION
        Handle a received UDP message.

        This function is called for every message received on the UDP
        port. Usually it is passed on to some object that handles
        inter-mud communications.

HISTORY
        The 'hostport' argument was added in 3.2.1.
        LDMud 3.2.9 renamed this method from receive_imp().

SEE ALSO
        send_udp(E), query_udp_port(E)