To-do.txt

Server or Client:
(OK)  -p, --port      #         server port to listen on/connect to
(OK)  -f, --format    [kmgKMG]  format to report: Kbits, Mbits, KBytes, MBytes
(OK)  -i, --interval  #         seconds between periodic bandwidth reports
(OK)  -F, --file name           xmit/recv the specified file
(OK)  -B, --bind      <host>    bind to a specific interface
(OK)  -V, --verbose             more detailed output
(OK)  -J, --json                output in JSON format
(OK)  --logfile f               send output to a log file
(OK)  -d, --debug               emit debugging output
(OK)  -v, --version             show version information and quit
(OK)  -h, --help                show this message and quit
Server specific:
  -s, --server              run in server mode
  -D, --daemon              run the server as a daemon
  -I, --pidfile file        write PID file
  -1, --one-off             handle one client connection then exit
Client specific:
(OK)  -c, --client    <host>    run in client mode, connecting to <host>
(OK)  -u, --udp                 use UDP rather than TCP
  -b, --bandwidth #[KMG][/#] target bandwidth in bits/sec (0 for unlimited)
                            (default 1 Mbit/sec for UDP, unlimited for TCP)
                            (optional slash and packet count for burst mode)
(OK)  -t, --time      #         time in seconds to transmit for (default 10 secs)
(OK)  -n, --bytes     #[KMG]    number of bytes to transmit (instead of -t)
(OK)  -k, --blockcount #[KMG]   number of blocks (packets) to transmit (instead of -t or -n)
(OK)  -l, --len       #[KMG]    length of buffer to read or write
                            (default 128 KB for TCP, 8 KB for UDP)
(OK)  --cport         <port>    bind to a specific client port (TCP and UDP, default: ephemeral port)
(OK)  -P, --parallel  #         number of parallel client streams to run
(OK)  -R, --reverse             run in reverse mode (server sends, client receives)
(OK)  -w, --window    #[KMG]    set window size / socket buffer size
  -M, --set-mss   #         set TCP/SCTP maximum segment size (MTU - 40 bytes)
(OK)  -N, --no-delay            set TCP/SCTP no delay, disabling Nagle's Algorithm
(OK)  -4, --version4            only use IPv4
(OK)  -6, --version6            only use IPv6
  -S, --tos N               set the IP 'type of service'
  -Z, --zerocopy            use a 'zero copy' method of sending data
  -O, --omit N              omit the first n seconds
(OK)  -T, --title str           prefix every output line with this string
(OK)  --get-server-output       get results from server
(OK)  --udp-counters-64bit      use 64-bit counters in UDP test packets

[KMG] indicates options that support a K/M/G suffix for kilo-, mega-, or giga-