Support HTTP X-Forwarded-For headers with more than one IP address

 ACCEPT: */*
 ACCEPT-ENCODING: identity
 VIA: 1.1 www-cacheF.example.com.au:8080 (squid/2.6.STABLE5)
 X-FORWARDED-FOR: 129.78.138.61, 179.78.64.103
 CACHE-CONTROL: no-cache, max-age=604800
 X-HOST: test.com
 X-FORWARDED-PROTO: http