Standardized install of iperf

iperf-install.sh

#! /usr/bin/env bash
#
# Standardized install of iperf.
#
set -o errexit
set -o nounset
set -o pipefail
PS4func() {
    local lineno="$1"
    local i f=''
    local c="\033[0;36m" y="\033[0;33m" n="\033[0m"
    local d=$((${#FUNCNAME[@]}-2))

    if [[ $lineno == 1 ]]
    then lineno=0
    fi

    for ((i=d; i>0; i--))
    do printf -v f "%s%s()" "$f" "${FUNCNAME[i]}"
    done

    printf "$y%s:%04d$c%s$n " "${BASH_SOURCE[1]##*/}" "$lineno" "$f"
}
PS4='\r$(PS4func $LINENO)'
set -o xtrace
#

IPERF_VER=3.17.1

main() {
    local where vers

    where=$(which iperf3)
    if [[ "$where" != "/usr/local/bin/iperf3" ]]
    then do_install
    fi

    vers=$(iperf3 --version)

    if ! grep -q "^iperf ${IPERF_VER//.\\.} " <<<"$vers"
    then do_install
    fi

    if ! grep -q "^Optional features available: CPU affinity setting, IPv6 flow label, SCTP, TCP congestion algorithm setting, sendfile / zerocopy, socket pacing, authentication, bind to device, support IPv4 don't fragment, POSIX threads\$" <<<"$vers"
    then do_install
    fi

    echo "You are running iperf $IPERF_VER no installation needed."
}

do_install() {
    sudo apt purge iperf iperf3 libiperf0

    mkdir --parents "$HOME/src"
    cd "$HOME/src"

    if [[ ! -d iperf ]]
    then git clone [email protected]:esnet/iperf.git
    fi

    cd iperf
    git checkout "tags/$IPERF_VER"
    "$HOME/src/sh/lt.sh" ||:

    if [[ ! -s /usr/include/netinet/sctp.h ]]
    then sudo apt install libsctp-dev
    fi

    if [[ ! -s /usr/bin/checksctp ]]
    then sudo apt install lksctp-tools
    fi

    if [[ ! -s /usr/include/openssl/ssl.h ]]
    then sudo apt install libssl-dev
    fi

    ./configure
    make -j
    sudo make install
    sudo ldconfig

    echo "You now have iperf $IPERF_VER installed."
    iperf3 --version
    exit 0
}

main
exit 0