#Below is a commented-out copy of the default VCL logic. If you
#redefine any of these subroutines, the built-in logic will be
#appended to your code.
sub vcl_recv {
if (req.request != “GET” &&
req.request != “HEAD” &&
req.request != “PUT” &&
req.request != “POST” &&
req.request != “TRACE” &&
req.request != “OPTIONS” &&
req.request != “DELETE”) {
/* Non-RFC2616 or CONNECT which is weird. */
return (pipe);
}
if (req.request != “GET” && req.request != “HEAD”) {
/* We only deal with GET and HEAD by default */
return (pass);
}
if (req.http.Authorization || req.http.Cookie) {
/* Not cacheable by default */
return (pass);
}
return (lookup);
}
sub vcl_pipe {
# Note that only the first request to the backend will have
# X-Forwarded-For set. If you use X-Forwarded-For and want to
# have it set for all requests, make sure to have:
# set req.http.connection = “close”;
# here. It is not set by default as it might break some broken web
# applications, like IIS with NTLM authentication.
return (pipe);
}
sub vcl_pass {
return (pass);
}
sub vcl_hash {
set req.hash += req.url;
if (req.http.host) {
set req.hash += req.http.host;
} else {
set req.hash += server.ip;
}
return (hash);
}
sub vcl_hit {
if (!obj.cacheable) {
return (pass);
}
return (deliver);
}
sub vcl_miss {
return (fetch);
}
sub vcl_fetch {
if (!obj.cacheable) {
return (pass);
}
if (obj.http.Set-Cookie) {
return (pass);
}
set obj.prefetch = -30s;
return (deliver);
}
sub vcl_deliver {
return (deliver);
}
sub vcl_discard {
/* XXX: Do not redefine vcl_discard{}, it is not yet supported */
return (discard);
}
sub vcl_prefetch {
/* XXX: Do not redefine vcl_prefetch{}, it is not yet supported */
return (fetch);
}
sub vcl_timeout {
/* XXX: Do not redefine vcl_timeout{}, it is not yet supported */
return (discard);
}
sub vcl_error {
set obj.http.Content-Type = “text/html; charset=utf-8″;
synthetic {”