Site on http/2. How to open certain pages via http/1.1?

Question

Nginx

I've searched all over Google and found nothing.
In general, http/2 is configured.
Task :
Open certain pages (starting with https://site.ru/somepage/) via http/1.1 protocol

config

server {
    listen      ip_address:443 ssl http2;
    server_name site.ru www.site.ru;
    ssl         on;
    add_header Strict-Transport-Security "max-age=31536000;" always;
    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_certificate      /home/admin/conf/web/ssl.sit.ru.pem;
    ssl_certificate_key  /home/admin/conf/web/ssl.site.ru.key;
    error_log  /var/log/apache2/domains/site.ru.error.log error;
}

What for? http/2 has a problem opening files on iPhone in Safari browser. On http1.1 everything works, on http2 it doesn't.

I transfer files through php like this

header('Content-Description: File Transfer');
        header('Content-Transfer-Encoding: binary');
        header('Content-Type: application/epub+zip');
        header('Content-Length: '.filesize($file));
        header('Content-Disposition: attachment; filename="'.$filename.'"');
        // force to disable caching
        header("Cache-Control: no-cache, no-store, max-age=0, must-revalidate"); // HTTP/1.1
        header("Pragma: no-cache"); // For old clients http/1.0
        header("Expires: -1"); // ensure that clients immediately treat this response as stale and avoid caching
  header("X-XSS-Protection: 1; mode=block");

Answer 1

In nginx, at the location level, it is impossible to select a protocol, only at the level of the entire virtual host (in fact, even the port, if not fixed yet). So, either fall back completely to http 1.1, or put up with the problem.