server{
    listen 80;
    server_name  localhost;
    client_max_body_size 1020M;
    root /usr/share/nginx/html/public;
    index  index.html index.htm;

    location /  {
              proxy_set_header    Host             $host;
              proxy_set_header    X-Real-IP        $remote_addr;
              proxy_set_header    X-Forwarded-For  $proxy_add_x_forwarded_for;
              proxy_set_header    X-Client-Verify  SUCCESS;
              proxy_set_header    X-Client-DN      $ssl_client_s_dn;
              proxy_set_header    X-SSL-Subject    $ssl_client_s_dn;
              proxy_set_header    X-SSL-Issuer     $ssl_client_i_dn;
              proxy_read_timeout 1800;
              proxy_connect_timeout 1800;
              client_max_body_size 1020M;
             try_files $uri $uri/ /index.html;


                add_header Access-Control-Allow-Origin $http_origin;
                add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
                add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

               if ($request_method = 'OPTIONS') {
                    return 204;
                 }
             }

}