SYNOPSIS
void receive_udp(string host, string 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)