How to use Nginx to rout traffic to a squid forwarding proxy

Hi,

We are running squid with a custom authentication application. Is it possible to have nginx pass a proxy tunnel to a squid forward proxy?
I've seen the https://github.com/chobits/ngx_http_proxy_connect_module , but that looks like trying to have nginx manage the proxy tunnel directly.
Any help would be appreciated. Thanks

curl -> nginx -> squid