Testing Proxy.pac Files

I decided to do a bit of checking on the proxy.pac file we were using. I grepped through our Apache access log files to pull out all of the IP addresses accessing the file over the year:

zgrep "proxy.pac" ./2013-??-??.access_log.gz | awk '{print $1}' |  awk -F ":" '{print $2}' | sort | uniq > ip_addresses.txt

Armed with the list of IP addresses I next fired up pactester.


Pactester is available from Google Code

Simple usage:

/usr/bin/pactester -p /var/www/htdocs/proxy.pac -u http://www.bbc.co.uk -c

The output of which could be:

PROXY server1.domain.uk:8080; PROXY server2.domain.uk:8080

So to test all my IP addresses I feed the IP addresses to pactester and I can grep for the output I am looking for e.g. DIRECT connections:

#for IP in `zgrep "proxy.pac" ./2013-??-??.access_log.gz | awk '{print $1}' |  awk -F ":" '{print $2}' | sort | uniq`; do
for IP in `cat /home/jonny/ip_addresses.txt`; do
COUNT=`/usr/bin/pactester -p /var/www/htdocs/proxy.pac -u http://www.bbc.co.uk -c $IP | grep DIRECT | wc -l`
if [ $COUNT -gt 0 ]; then
echo $IP" DIRECT"

Leave a Reply

  • (will not be published)

XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>