#!/usr/bin/env bash

set -e

PORT=$1
FSIZE=$2

OUTPUT_FNAME_TPL="tcpdyn-$PORT-$FSIZE-"
N=$((1 + $(find . -name ${OUTPUT_FNAME_TPL}'*' -type f | wc -l)))
N=$(printf "%03d" $N)
OUTPUT_FNAME="$OUTPUT_FNAME_TPL$N.pcap"

tcpdump -i wlp0s20f3 -n -U -w $OUTPUT_FNAME -n 'host 45.76.35.230 or host 2001:19f0:5001:32f3:5400:3ff:fe07:2a1c' &
TCPDUMP_PID=$!

sleep 0.5

curl -v -m 600 -o /dev/null "http://tcpdynamics.uk:$PORT/$FSIZE" || true

sleep 2

kill -SIGINT $TCPDUMP_PID

fg || true