How to select one route with http on a site with https?

Question

Nginx

Good day.
There is a site wrapped in https, there is only one page on it, on which there will be different iframes, which may very well not be https.
The next task is to show this page with https and a warning with a link to http (in fact, everything is done in the code), as well as to show it via http, redirecting the rest of the routes to https.
How it looks now:

server {
    server_name server.com;
    listen 80;

    location ~ ^/(hello|hello/.*)$ {
        uwsgi_pass  django;
        include  uwsgi_params; 
    }

    location / {
        rewrite  ^ https://$server_name$request_uri? permanent;
    }

}

server {
    listen      443 ssl spdy; 
    server_name server.com; 
    charset     utf-8; 

    # всякие настройки ssl, логи и прочая джанго-статика
  
    location / {    
        uwsgi_pass  django;
        include  uwsgi_params;
    }
}

The first visit to the /hello page is successful, the second time the redirect to https occurs.
There is a suspicion that this is to blame for everything in the port 80 server

location / {
    rewrite  ^ https://$server_name$request_uri? permanent;
}

what redirects the static and what the browser remembers the next time the page is refreshed.
But how to get around it?

Answer 1

Try
location / {
rewrite ^ https://$server_name$request_uri? redirect;
}

Answer 2

do not use permanent, the 301 redirect is cached by the browser.
return 302 use.