location ^~ /api/websocketd/ {
    proxy_pass http://127.0.0.1:9502/;
    proxy_http_version 1.1;
    proxy_read_timeout 90s;

    proxy_set_header    Upgrade             $http_upgrade;
    proxy_set_header    Connection          "upgrade";
    proxy_set_header    X-Script-Name       /api/websocketd;
    proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
    proxy_set_header    X-Forwarded-Proto   $scheme;
}
