topic QlikSense - CloudFlare : Connection Lost Error in Data Load Editor in App Development

QlikSense - CloudFlare : Connection Lost Error in Data Load Editor

kallay — Tue, 12 Mar 2024 15:03:05 GMT

Hello,

Recently our system administrator added CloudFlare on QlikSense Servers for security purpose.

We have modified key="WebSocketPingInterval" value="10" in proxy.config , so we won't get the connetion lost in hub, but the error is still occuring in data load editor. Sometimes it appears right after data load editor is open ,or the error appears after 2-3 minutes.

We also add the public adress in "Host To Allow" List from Virtual Proxy.

It's a known problem with Cloudflare regarding connection lost in data load editor?

Re: QlikSense - CloudFlare : Connection Lost Error in Data Load Editor

Ranganath_DR — Sun, 17 Mar 2024 21:00:36 GMT

Hi @kallay ,

There may be additional settings on Cloudflare that you need to enable as the issue started after adding Cloudflare. example: https://developers.cloudflare.com/network/websockets/

Re: QlikSense - CloudFlare : Connection Lost Error in Data Load Editor

kallay — Mon, 18 Mar 2024 11:14:32 GMT

Hello @Ranganath_DR ,

Our System Administrator ensured us that the websockets are enabled and there are not any other additional setting to be done in CloudFlare.

Re: QlikSense - CloudFlare : Connection Lost Error in Data Load Editor

pauljohansson — Mon, 09 Sep 2024 09:14:17 GMT

@kallay

Did you find a solution? We're also using Cloudflare and for us it works with key="WebSocketPingInterval" value="30". Before this adjustment we also got "connection lost"

However, we have an issue of not being able to download task logs from QMC when going via Cloudflare.

Do you also have this issue?

Paul

Re: QlikSense - CloudFlare : Connection Lost Error in Data Load Editor

YanSandman — Sun, 23 Mar 2025 08:26:21 GMT

Hi Paul,

We are experiencing the same issues. Could you please let me know if you managed to solve them and how?

Best regards,
Yan