The following test illustrates the SOCK Mcast multicast wrappers in
conjunction with the Reactor.  This test was written by Tim Harrison
(harrison@cs.wustl.edu).

To run the server type: 

% server &

It will wait for the first message sent to it and then read for 5 seconds. 

To run the client type any of these:

% client -m max_message_size -i iterations
% client < <filename>
% client