client.sh

#!/bin/bash

if [ $# -ne 4 -a $# -ne 3 ]; then
    echo "Wrong arguments"
    echo "./client.sh <left_neighbor_ip> <left_neighbor_port> <clients> [right_neighbor_port]"
    exit 1
fi


SPEEDS=(20 40 60 80 100 128)
SPEEDSLEN=${#SPEEDS[@]}
INSTANCES=(1 2 3 5 10)
INSTANCESLEN=${#INSTANCES[@]}


# check if right neighbor ended
if [ $# -eq 4 ]; then
	# wait for right neighbor to start
	nc -lvp "$4"
	# wait for right neighbor to end
	nc -lvp "$4" &
	LISTEN_PID=$!
fi

# test various speed limits
for (( i=0; i<${SPEEDSLEN}; ((i++)) )); do
	# test various numbers of instances
	for (( j=0; j<${INSTANCESLEN}; ((j++)) )); do
		for (( k=0; k<${INSTANCES[$j]}; ((k++)) )); do
			# make an SSL connection
			wget https://10.10.10.1:443/test5g.bin -O /dev/null --no-check-certificate --limit-rate=${SPEEDS[$i]}m &>/dev/null &
			clientPIDs+=($!)
		done
	
		# wait for instances to finish downloading
		for pid in "${clientPIDs[@]}"; do
 			echo "Waiting for $pid to finish downloading"
 			wait $pid
 		done

		# wait for right neighbor to quit
		if [ -n "$LISTEN_PID" ]; then
			echo "Waiting for neighbor on port $4 to end"
			wait $LISTEN_PID
		fi

		canContinue=0
		while [ $canContinue -ne 1 ]; do
			# notify left neighbor
			nc $1 $2 -c "echo ${SPEEDS[$i]},${INSTANCES[$j]},$3,"
			if [ $? -ne 0 ]; then
				echo "Run Server!!"
				read
			else
				canContinue=1
			fi
		done
		# Delete stored PIDs
		unset clientPIDs
	done
done