rewriter_url

#!/usr/bin/perl
$|=1;
while (<>) {
chomp;
@X = split;
#$chan = $X[1];
$url = $X[0];

if ($url =~ m/^http:\/\/.*\/(speedtest\/.*)/) {
    print "OK rewrite-url=http://192.168.100.2:80/$1\n";

} else {
    print "ERR\n";
}
}

Config :
#acl speedtest url_regex \/speedtest\/.*\.(jpg|txt|php).*
#url_rewrite_access allow  speedtest
#url_rewrite_program /etc/squid/speedrewriter.pl
#redirector_bypass on

#cache_peer_access 192.168.100.2 parent 80 0 no-tproxy
#http_access cache_peer_access allow localhost
#always_direct allow localhost
#always_direct deny speedtest
#never_direct deny all