#!/bin/bash

DATE_FILE=/tmp/.ssh.$1.date
MAX_DIFF_TIME=16

while true; do
    # ssh runner, note that ssh should be properly configured
    # and should not ask for password
    date +%s > $DATE_FILE
    ssh $@ 'while sleep 1; do echo a; done' | while read i; do
        date +%s > $DATE_FILE
    done &

    # timeout monitor
    while sleep 1; do
        RECEIVED_TIME=`cat $DATE_FILE`
        DIFF_TIME=$((`date +%s`-RECEIVED_TIME))
        printf '\rDiff time: %d sec            \r' $DIFF_TIME
        if [[ $DIFF_TIME -gt $MAX_DIFF_TIME ]] && [[ $RECEIVED_TIME -gt 1 ]]; then
            printf "\nKilling jobs"
            for i in `jobs -p`; do (kill $i; kill -9 $i;)&>/dev/null; done
            break
        fi
    done
done