This example describes an interaction between a client (initiator) and an 
echo server (echo_replier). The initiator reads data from file "echo_file.dat"
sends them to the echo_replier. The echo_replier upon receiving that, keeps 
sending back to the initiator forever, trying to consume as much 
bandwidth as possible. However, with the help of network reservation, 
you can control the amount of bandwidth the echo_replier can use.

The part within the "#ifdef RK_NET_RSV; #endif" of the sender (echo_replier) 
program deals with the implementation of network reservation. The receiver 
(initiator in this example) has no modification related to RK right now. 

Obviously, the programs echo_replier and initiator should be run from different
machines. You need to change the IP address used the code in order to suit 
your needs. Of course, you may also change the specifications for the 
reservations.