Traffic generator for testing network bandwidth.

# To run iperf3 as a server:
iperf3 -s

# To run an iperf3 server on a specific port:
iperf3 -s -p <port>

# To start bandwidth test:
iperf3 -c <server>

# To run iperf3 in multiple parallel streams:
iperf3 -c <server> -P <streams>

# To reverse direction of the test. Server sends data to the client:
iperf3 -c <server> -R