#! /bin/bash	
IP="$1"
PORT="$2"
PROCS="$3"
FILE="$4"
PROCMAXTIME=60

MAINPID=$$
PGID=$(ps -o pgid= $MAINPID | grep -oe "[0-9]*")

do_exit() {
	kill -9 -$PGID
}
trap do_exit SIGINT SIGTERM

for i in $(seq 0 $(($PROCS-1))); do
	(
		THISPID=$BASHPID
		# ( while kill -0 $MAINPID; do sleep 1; done; do_exit ) &
		while true; do
			(
				THISPID2=$BASHPID
				( sleep $PROCMAXTIME; kill -9 $THISPID2 >/dev/null 2>&1 ) &
				echo "starting $(($i+1)) / $PROCS"
				( while kill -0 $THISPID2; do cat "$FILE"; done ) | nc "$IP" "$PORT" >/dev/null 2>&1
			) >/dev/null 2>&1
		done
	) &
	sleep $(echo "scale=2; ($PROCMAXTIME/$PROCS) + 1" | bc)
done
while true; do sleep 9999999; done