possibble to use fastcgi cache with set-cookie header

[Jools Wills]

Hi,

I'm wondering if it is possible to force fastcgi_cache even when there 
is a Set-Cookie header? I was testing with

http://nginxtest.exotica.org.uk/index.php

which sets

   Set-Cookie: site=nginxtest; HttpOnly
   Expires: Thu, 19 Nov 1981 00:00:00 GMT
   Cache-Control: no-store, no-cache, must-revalidate, post-check=0, 
pre-check=0
   Pragma: no-cache

but I can only cache it with nginx if i remove the Set-Cookie header.

my config.

http {
   fastcgi_cache_path /var/cache/nginx levels=1:2 
keys_zone=fastcgicache:10M;
}

server {
   listen 80;
   server_name nginxtest.exotica.org.uk;

   root /path/to/website
   index index.html index.php;

   location ~ \.php$ {
     fastcgi_cache_valid any 10m;
     fastcgi_cache_key $host$request_uri;
     fastcgi_ignore_headers Cache-Control Expires;
     fastcgi_cache fastcgicache;
     fastcgi_pass unix:/somepath/fcgi.sock
     fastcgi_index index.php;
     fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
     include fastcgi_params;
   }

}