#!/bin/sh
INTERFACE="$1"
echo "Download server list..."
wget -q -O /tmp/speedtest.lst http://c.speedtest.net/speedtest-servers-static.php
bestuploadurl=""
besthost=""
bestpinghost=""
bestping="999"
echo "Select best server..."
while read line; do
	if [ "$(echo $line | grep url)" != "" ]; then
		pinghost=$(echo $line | awk -F'"' '{print $18}' | cut -d: -f1)
		host=$(echo $line | awk -F'"' '{print $18}')
		uploadurl=$(echo $line | awk -F'"' '{print $2}')
		ping=$(ping -c1 -w1 $pinghost | cut -d "/" -s -f5 | cut -d "." -f1)
		echo -n "."
		if [ -n "$ping" ] && [ "$ping" -lt "$bestping" ]; then
			bestping=$ping
			bestuploadurl=$uploadurl
			besthost=$host
			bestpinghost=$pinghost
		fi
	fi
done < /tmp/speedtest.lst
echo
echo "Done: url: $bestuploadurl - host: $besthost - ping: $bestping"
echo "Download test:"
if [ -z "$INTERFACE" ]; then
	curl -4 $besthost/speedtest/random7000x7000.jpg >/dev/null || echo
else
	hostip=$(dig +short $bestpinghost | tr -d "\n")
	ipset add ss_rules_dst_bypass_all $hostip
	curl -4 --interface $INTERFACE $besthost/speedtest/random7000x7000.jpg >/dev/null || echo
	ipset del ss_rules_dst_bypass_all $hostip
fi