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# This is a sample VCL configuration file for varnish running in front
# of Alaveteli. See the vcl(7) man page for details on VCL syntax and
# semantics.
#
# Default backend definition. Set this to point to your content
# server. In this case, apache + Passenger running on port 80
#
backend default {
.host = "127.0.0.1";
.port = "80";
.connect_timeout = 600s;
.first_byte_timeout = 600s;
.between_bytes_timeout = 600s;
}
// set the servers alaveteli can issue a purge from
acl purge {
"localhost";
"127.0.0.1";
}
sub vcl_recv {
# Handle IPv6
if (req.http.Host ~ "^ipv6.*") {
set req.http.host = regsub(req.http.host, "^ipv6\.(.*)","www\.\1");
}
# Sanitise X-Forwarded-For...
remove req.http.X-Forwarded-For;
set req.http.X-Forwarded-For = client.ip;
# Remove Google Analytics, has_js, and last-seen cookies
set req.http.Cookie = regsuball(req.http.Cookie, "(^|;\s*)(__[a-z]+|has_js|has_seen_country_message|seen_foi2)=[^;]*", "");
# Normalize the Accept-Encoding header
if (req.http.Accept-Encoding) {
if (req.url ~ "\.(jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|flv|pdf|ico)$") {
# No point in compressing these
remove req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
# unknown algorithm
remove req.http.Accept-Encoding;
}
}
# Ignore empty cookies
if (req.http.Cookie ~ "^\s*$") {
remove req.http.Cookie;
}
if (req.request != "GET" &&
req.request != "HEAD" &&
req.request != "POST" &&
req.request != "PUT" &&
req.request != "PURGE" &&
req.request != "DELETE" ) {
# We don't allow any other methods.
error 405 "Method Not Allowed";
}
if (req.request != "GET" && req.request != "HEAD" && req.request != "PURGE") {
/* We only deal with GET and HEAD by default, the rest get passed direct to backend */
return (pass);
}
# Ignore Cookies on images...
if (req.url ~ "\.(png|gif|jpg|jpeg|swf|css|js|rdf|ico)(\?.*|)$" &&
req.url !~ "(\?|\&)cookie_passthrough=1") {
remove req.http.Cookie;
return (lookup);
}
if (req.http.Authorization || req.http.Cookie) {
return (pass);
}
# Let's have a little grace
set req.grace = 30s;
# Handle PURGE requests
if (req.request == "PURGE") {
if (!client.ip ~ purge) {
error 405 "Not allowed.";
}
# For an explanation of the followng roundabout way of defining
# ban lists, see
# http://kristianlyng.wordpress.com/2010/07/28/smart-bans-with-varnish/
# TODO: in Varnish 2.x, the following would be
# purge("obj.http.x-url ~ " req.url);
ban("obj.http.x-url ~ " + req.url);
error 200 "Banned";
}
return (lookup);
}
sub vcl_fetch {
set beresp.http.x-url = req.url;
if (req.url ~ "\.(png|gif|jpg|jpeg|swf|css|js|rdf|ico|txt)(\?.*|)$" &&
req.url !~ "(\?|\&)cookie_passthrough=1")) {
# Ignore backend headers..
remove beresp.http.set-Cookie;
set beresp.ttl = 3600s;
return (deliver);
}
if (beresp.status == 404 || beresp.status == 301 || beresp.status == 500) {
set beresp.ttl = 1m;
return (deliver);
}
}
# We need to separately cache requests originating via http and via https
# since we are serving very slightly different content in each case
# Varnish 2.x version of vcl_hash
#sub vcl_hash {
# set req.hash += req.url;
# if (req.http.host) {
# set req.hash += req.http.host;
# } else {
# set req.hash += server.ip;
# }
#
# # Include the X-Forward-Proto header, since we want to treat HTTPS
# # requests differently, and make sure this header is always passed
# # properly to the backend server.
# if (req.http.X-Forwarded-Proto) {
# set req.hash += req.http.X-Forwarded-Proto;
# }
#
# return (hash);
#}
# Varnish 3 version of vcl_hash
sub vcl_hash {
hash_data(req.url);
if (req.http.host) {
hash_data(req.http.host);
} else {
hash_data(server.ip);
}
# Include the X-Forward-Proto header, since we want to treat HTTPS
# requests differently, and make sure this header is always passed
# properly to the backend server.
if (req.http.X-Forwarded-Proto) {
hash_data(req.http.X-Forwarded-Proto);
}
return (hash);
}