upstream backend {
    server 127.0.0.1:9000;
}
server {
    listen       8080;
    root         /var/www/simplesamlphp-1.10.0/www;

    index        index.php;

    location  /simplesaml {
        alias /var/www/simplesamlphp-1.10.0/www;

        location ~ \.php(/|$) {
            include fastcgi_params;
            fastcgi_pass   backend;
            fastcgi_split_path_info ^(.+?\.php)(/.+)$;
            fastcgi_param SCRIPT_FILENAME $request_filename;
            fastcgi_param PATH_INFO       $fastcgi_path_info if_not_empty;
            proxy_set_header X-Forwarded-Port $server_port;
            fastcgi_param PATH_INFO $fastcgi_path_info;
        }
    }
}