With NGINX upstreams, is it possible to proxy pass to both HTTP and HTTPS backends in the same upstream?

Suppose I want to proxy some portion of my traffic to a remote backend instead of the local listener on the server. For example:

upstream backends {
    server 127.0.0.1:8080 weight=20;  # local process (HTTP)
    server other-remote-backend.company-internal.com:443;  # remote server (HTTPS)
}


location / {
    # ...other stuff...
    proxy_pass http://backends;
}

In the above configuration, every 20 or so requests NGINX will try to route to http://other-remote-backend.company-internal.com:443 which is only listening for SSL.

Is there a way for the upstream to define its own protocol scheme? Right now this seems undoable without changing the local listener process to be SSL as well (which is a less than desirable change to make).

Thanks

As is the usual case, I've figured out my own problem and its quite obvious. If you're trying to accomplish the above the trick is quite simple.

1. First create a new NGINX Virtual Host that listens on HTTP and proxy_passes to your remote HTTPS backend like so:

/etc/nginx/sites-available/remote_proxy

upstream remote {
        server other-remote-backend.company-internal.com:443;
}

server {

        # other-remote-backend.company-internal.com:443;

        listen 8181;

        server_name my_original_server_name;

        location / {
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $remote_addr;
            proxy_pass https://remote;
        }

}

2. You can now use just http for your upstreams in the original configuration listening on 443:

/etc/nginx/sites-available/default

upstream backends {
    server 127.0.0.1:8080 weight=20;  # local process (HTTP)
    server 127.0.0.1:8181 # local nginx proxying to HTTPS remote
}


location / {
    # ...other stuff...
    proxy_pass http://backends;
}

Now just enable your new site and restart $ ln -s /etc/nginx/sites-available/remote_proxy /etc/nginx/sites-enabled/ && systemctl restart nginx