A server block configuration for nginx, splitting one domain name into two locations, by listening on different ports

nginx_domain_port_split_server_block

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        root /var/www/html/A;

        index index.html;

        server_name localhost;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
        }
}

server {
        listen 8191;
        listen [::]:8191 default_server;

        root /var/www/html/B;

        index index.html;

        server_name localhost;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ =404;
        }
}