Tracking cookies

tracking.pl

sub vcl_recv {
  if (req.http.Cookie ~ "mycookie=") {
    # The request does have a tracking cookie so store it temporarily
    set req.http.Tmp-Set-Cookie = req.http.Cookie;
    unset req.http.Cookie;
  } else {
    # The request doesn't have a tracking cookie so force a miss
    set req.hash_always_miss = true;
  }

#FASTLY recv
}

sub vcl_fetch {
  # The response has a Set-Cookie ...
  if (beresp.http.Set-Cookie) {
    # ... so store it temporarily
    set req.http.Tmp-Set-Cookie = beresp.http.Set-Cookie;
    # ... and then unset it
    unset beresp.http.Set-Cookie;
  }

#FASTLY fetch
}

sub vcl_deliver {
  # Send the Cookie header again if we have it
  if (req.http.Tmp-Set-Cookie) {
    set resp.http.Set-Cookie = req.http.Tmp-Set-Cookie;
  }

#FASTLY deliver
}

I can't believe Github doesn't have a VCL type for gists, calling this a perl file seems super-icky

@samjsharpe - yeah, yet it oddly works