[VCL] Basic Varnish configuration for TYPO3

sub vcl_recv {
        # Set backend
        set req.backend = default;

        if (req.http.host ~ "gitweb.squeezebox.vm") {
                return (pass);
        }

        # Set a unique cache header with client ip
        if (req.http.x-forwarded-for) {
                set req.http.X-Forwarded-For = req.http.X-Forwarded-For + ", " + client.ip;
        } else {
                set req.http.X-Forwarded-For = client.ip;
        }

        # Always allow post request to be sent to the backend but not cached
        if (req.request == "POST") {
                ban("req.url == " + req.url);
                set req.http.X-Test = req.url;
                return (pass);
        }
        if (req.request != "GET" &&
        req.request != "HEAD" &&
                req.request != "PUT" &&
                req.request != "POST" &&
                req.request != "TRACE" &&
                req.request != "OPTIONS" &&
                req.request != "DELETE") {
                # Pass to backend until it's closed
                return (pipe);
        }

        # If neither get nor post request, send to backend but not cached
        if (req.request != "GET" && req.request != "HEAD") {
                return (pass);
        }

        # If any autorisation was set do not cache
        if (req.http.Authorization || req.http.Cookie ~ "fe_typo_user") {
                return (pass);
        }

        # If we work in backend
        if (req.http.Cookie ~ "be_typo_user") {
                # Delete cache depending on TYPO3 cache control
                if (req.http.Cache-Control ~ "no-cache") {
                        set req.ttl = 0s;
                        ban("req.url == " + req.url);
                }
                return (pass);
        }
        else {
                # Delete cookie
                unset req.http.Cookie;
        }

        # Lookup in cache
        return (lookup);
}

sub vcl_fetch {
        # Set default cache to 12 hours
        set beresp.ttl = 12h;

        # Deliver old content up to 1 day
        set req.grace = 24h;

        # Set cache for 2 days
        if (req.url ~ "\.(jpeg|jpg|png|gif|ico|swf|js|css|txt|gz|zip|rar|bz2|tgz|tbz|html|htm|pdf|pls|torrent)$") {
                set beresp.ttl = 48h;
        }

        # Delete cookie
        if (req.url ~ "^/typo3") {
        }
        else {
                if (req.request == "POST") {
                }
                else {
                        unset beresp.http.Set-Cookie;
                }
        }
}