njs and subrequests

[Dmitry Volyntsev]

Hi Antoine,

 >Is there any plan to have subrequest from ngx_http_js_module support
 > external URLs ?

Nothing prevents you from making subrequests to external URLs.

https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass
https://nginx.org/en/docs/http/ngx_http_core_module.html#resolver

 >The address can be specified as a domain name or IP address
..
 >In this case, if an address is specified as a domain name, the name is 
searched among the described server groups, and, if not found, is 
determined using a resolver.

You still need a location to make a proxy_pass for you (what you already 
have).

As Valentine said, there is nothing special in ngx_http_js_module about 
subrequests. The module simply uses internal NGINX API for subrequests 
(http://hg.nginx.org/njs/file/tip/nginx/ngx_http_js_module.c#l2099).

You, can find a more complex example of using njs subrequests here: 
https://github.com/nginxinc/nginx-openid-connect