Greetings,

Our custom nginx module implements a number of subrequests (REST calls to other servers to obtain data for our business logic). Everything is working correctly, except one customer requires a corporate HTTP web proxy for the URL (running on a different server) that our subrequests will be hitting. It's not clear to us how to configure a "web proxy" for a subrequest, since the subrequest itself is already basically a "proxy" call.

Our subrequests would look like this:

location /subrequest {
internal;
resolver 127.0.0.1;
proxy_pass http://rest_server/...;
}

We're aware of this kind of thing for the main request... but unclear if/how it applies to subrequests?

http {
upstream corporate_proxy {
server proxy.my.company.net:8080;
}
server {
...
location /custom/main/request/url {
proxy_buffering off;
proxy_pass_header on;
proxy_set_header Host "www.origin-server.com";
proxy_pass http://corporate_proxy;
}
}
}

How would we force the subrequest to use the corporate proxy?

Thanks