nixpkgs/pkgs/tools/networking/iperf/default.nix

{ stdenv, fetchurl }:

stdenv.mkDerivation {
  name = "iperf-2.0.4";

  src = fetchurl {
    url = http://garr.dl.sourceforge.net/sourceforge/iperf/iperf-2.0.4.tar.gz;
    sha256 = "0i3r75prbyxs56rngjbrag8rg480ki3daaa924krrafng30z2liv";
  };

  meta = {
    homepage = ""; 
    description = "tool to measure IP bandwidth using UDP or TCP";
    license = "as-is";
  };
}