prompt> client 128.111.52.10 28000
PING
PING request sent, waiting for response...
PING response received.
Hello world
SENDING FIRST MESSAGE:  "Hello world"
REVERSED MESSAGE:  "dlrow olleH"
PING
PING request sent, waiting for response...
PING response received.
END TRANSMISSION
SENDING END-OF-TRANSMISSION
TRANSMISSION ENDED
prompt>