#!/bin/bash
# twily-scrpt
# dependencies~
# speedometer, tshark, tcptrack, iftop, traceroute, nethogs, netstat, ssh, dd, sudo, +(iperf, nc/netcat)

opt=$1
add=$2 # port or ip

default_dev="wlp0s20f3"
default_ip=127.0.0.1
default_port=8000

case "$opt" in
    "2") # list port listeners
        sudo netstat -plnt
        ;;
    "3") # nethog list processes
        if [ -z "$add" ]; then add=$default_dev; fi
        sudo nethogs -v 3 -a -C $add
        ;;
    "4") # trace connection
        if [ -z "$add" ]; then add=$default_ip; fi
        traceroute $add
        ;;
    "5") # speedtest between 2 devices
        if [ -z "$add" ]; then add=$default_ip; fi
        ssh amalie@$add 'dd if=/dev/zero bs=1GB count=3 2>/dev/null' | dd of=/dev/null status=progress
        # alt methods
        # nc -vvlnp 12345 >/dev/null
        # dd if=/dev/zero bs=1M count=1K | nc -vvn 10.10.0.2 12345
        #--or
        # iperf -sp 12345
        # iperf -c <address of other computer> -p 12345
        ;;
    "6") # general traffic overview
        if [ -z "$add" ]; then add=$default_dev; fi
        sudo iftop -i $add
        ;;
    "7") # more general traffic overview
        if [ -z "$add" ]; then add=$default_dev; fi
        sudo tcptrack -fr 10 -i $add
        ;;
    "8") # capture packets
        if [ -z "$add" ]; then add=$default_port; fi
        sudo tshark -i lo -n -s0 -f "port $add"
        ;;
    *) # (default 1 / empty) bandwidth monitoring
        if [ -z "$add" ]; then add=$default_dev; fi
        sudo speedometer -l  -r $add -t $add -c -r lo -t lo -m $(( 1024 * 1024 * 3 / 2 ))
        #sudo speedometer -l  -r $add -t $add -c -r tun0 -t tun0 -c -r lo -t lo -m $(( 1024 * 1024 * 3 / 2 ))
        #speedometer -l  -r tun0 -t tun0 -m $(( 1024 * 1024 * 3 / 2 ))
        #speedometer -l  -r lo -t lo -m $(( 1024 * 1024 * 3 / 2 ))
        ;;
esac