Hi, I am trying to configure squid to function as SSL cache proxy for an authenticated object (using login=PASS in the cache_peer directive) To do that I’ve added the “cache-control=public, must-revalidate, max-age=0” directive to the back-end server whose files I would like to cache. This works great for me when configuring a non-SSL(port 6666) SQUID-based proxy. However when I access the proxy using SSL (port 4444 below) the cache file is deleted every time and the cache is not used. SQUID receives HTTPS requests, performs the SSL termination as expected, gets the data from the back end server and saves the file to the cache directory. Then I pass the SQUID HTTP request, asking for the same file. SQUID serves the data from the cache. Next step is to ask the same file with HTTPS. This time SQUID clears that file from the cache and download it from the back end server. So I used Wireshark to identify the difference: SQUID pass the HTTP request using the If-None-Match header while the HTTPS request doesn’t contain this directive in the header. Anyone got any idea? bellow is my squid.conf file: acl manager proto cache_object acl localhost src 127.0.0.1/32 acl localhostdomain src 10.10.10.10 acl to_localhost dst 127.0.0.0/8 acl localnet src 10.0.0.0/8 # RFC1918 possible internal network acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.0.0/16 # RFC1918 possible internal network acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl Safe_ports port 6666 # SQIOD port acl CONNECT method CONNECT http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localnet http_access allow all icp_access allow localnet icp_access deny all htcp_access allow localnet htcp_access deny all https_port 4444 vhost vport cert=/home/tomer/Desktop/certificate.pem key=/home/tomer/Desktop/key.pem http_port 6666 vhost vport cache_peer 10.10.10.10 parent 8050 0 originserver default login=PASS cache_dir ufs /usr/local/squid/var/cache 100 16 256 maximum_object_size 2097000 KB # A bit below 2 GB - SQUID maximum file size hierarchy_stoplist cgi-bin ? access_log /usr/local/squid/var/logs/access.log squid acl QUERY urlpath_regex cgi-bin \? cache deny QUERY refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 icp_port 3130 coredump_dir /usr/local/squid/var/cache visible_hostname ubuntu
