#!/bin/bash

host="ie-entwicklung@$1"

tunnel() {
  name=$1
  ip=$2
  rPort=$3
  lPort=$4

  echo -n "$name @ $ip    mapped to    localhost:$lPort  "
  ssh -nNTL "$lPort:$ip:$rPort" "$host" 2> /dev/null &

  until nc -vz 127.0.0.1 $lPort 2> /dev/null
  do
    echo -n .
    sleep 0.5
  done

  echo "ok"
}

echo ""

tunnel "Trumpf DCDC (http)      " 10.0.2.1 80 8002
tunnel "Kaco Inverter (http)    " 10.0.3.1 80 8003
tunnel "Int Emu Meter (http)    " 10.0.4.2 80 8004

echo
echo "press any key to close the tunnels ..."
read -r -n 1 -s
kill $(jobs -p)
echo "done"