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#!/usr/bin/env bash
set -e
MYDIR="$(realpath "$(dirname ${0})")"
nDPId_test_EXEC="$(realpath "${1:-"${MYDIR}/../nDPId-test"}")"
PROTOCOL="${2:-tcp}"
MAX_RUNS="${3:-100}"
MAX_COUNT="${4:-10000}"
function usage()
{
cat <<EOF
usage: ${0} [path-to-nDPId-test-exec] [protocol] [max-runs] [max-count]
path-to-nDPId-test-exec defaults to ${nDPId_test_EXEC}
protocol defaults to ${PROTOCOL}
max-runs defaults to ${MAX_RUNS}
max-count defaults to ${MAX_COUNT}
EOF
return 0
}
if [ $# -eq 0 ]; then
usage
exit 1
elif [ ! -x "${nDPId_test_EXEC}" ]; then
printf '%s\n' "Required nDPId-test executable does not exist; ${nDPId_test_EXEC}"
exit 1
fi
function sighandler()
{
printf '%s\n' ' Received shutdown SIGNAL, bye' >&2
rm -f "/tmp/randpkt_$$.pcap"
$(which pkill) -P $$
wait
exit 2
}
trap sighandler SIGINT SIGTERM
test -z "$(which pkill)" && { printf '%s\n' 'pkill not found'; exit 1; }
test -z "$(which randpkt)" && { printf '%s\n' 'randpkt not found'; exit 1; }
while (( ${MAX_RUNS} > 0 )); do
printf '.'
test $((${MAX_RUNS} % 10)) -ne 0 || printf '%s' "${MAX_RUNS}"
$(which randpkt) -c "${MAX_COUNT}" -t "${PROTOCOL}" "/tmp/randpkt_$$.pcap"
${nDPId_test_EXEC} "/tmp/randpkt_$$.pcap" >/dev/null
MAX_RUNS=$((${MAX_RUNS} - 1))
done
rm -f "/tmp/randpkt_$$.pcap"
printf '\n'
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