Qlik Web-socket disconnect with Amazon Load balancer

slh2QlikUser — Thu, 13 May 2021 06:11:56 GMT

Hi, We're experiencing an issue where the websocket between the client and QLIK sense gets closed prematurely. The client connection goes through an AWS ALB. We've enabled TCP keep-alive in proxy.exe.config (60s), and configured session timeouts on the virtual proxy to 1hr.

We've configured the Application Load balancer to 1hr as well. Despite these settings, there are still situations where the client loses their connection. The following video seems to describe what we're experiencing: https://www.youtube.com/watch?v=IF0sDvZ1O where the clients router is ending the TCP session.

If we configure the client with a VPN, where their session isn't NAT'ed by their router, we don't experience timeouts. So my question is: does anyone have any advice or ideas on how we might be able to alert when a client loses their connection (beyond grep'ing the proxy activity log), and ANYTHING to try to address the timeouts?

Re: Qlik Web-socket disconnect with Amazon Load balancer

Gysbert_Wassenaar — Thu, 13 May 2021 09:14:10 GMT

Sounds like the clients router doesn't properly handle websocket connections. I doubt you can solve this on the Qlik Sense or ALB end. Using a vpn sounds like a reasonable solution.

topic Re: Qlik Web-socket disconnect with Amazon Load balancer in Management & Governance

Qlik Web-socket disconnect with Amazon Load balancer

Re: Qlik Web-socket disconnect with Amazon Load balancer