If the specified client does not exist, the data simply be send to the event manager. This can be used to simply test out going, unidirectional bandwidth. Without this option the command will attempt to send data as fast as it can. If the port is not specified it defaults to 9000. Valid ranges are 4 to 4000.
Higher throughput is achieved with larger messages.
If -k was specified, this allows the program to choice the appropriate message lengths to achieve the desired rate. Specifies the number of messages to send or receive. The default is 10,000.