Qlik Sense Mobile Client changes from mobile view to to browser view intermittently in Android and iOS

[Rakesh_HB]

Viewing a Qlik Sense app with the mobile client (on prem) causes the view to sometimes change from mobile to browser view.

Reviewing the "About" details shows the Qlik Sense Server's Version instead of the Qlik Sense Mobile client version.

Environment

• Qlik Sense Enterprise on Windows
• Qlik Sense Mobile

Resolution

1. Turn on the .NET Web Sockets in the Qlik Sense Server as below. If Multinode, changes must be done on all the nodes.
   
   Path: "C:\Program Files\Qlik\Sense\Repository\"
   
   The default value is "false"
   

   <add key="EnableDotNetWebSockets" value="false" />

   Now, Set/Change it to "true"
   

   <add key="EnableDotNetWebSockets" value="true" />

2. If Multinode, make sure all the Qlik Sense Servers share the common TLS/SSL Cipher Suites:
   
   • TLS and SSL Support in Qlik Sense: How to configure Qlik Sense and TLS
   • Supported TLS and SSL Protocols and Ciphers
3. Reboot the Server/s.

Cause

There will be an open delay (>30 seconds) of the "qrsData" WebSocket that can be seen in the Developer logs:

2022-11-24 12:08:12,794-INFO [WEB] Web socket URL: wss://qlikserver1.domain.local/hub/qrsData =>void PresentationManagerImpl::notifyMessageFromJavascript(QString)

After a minute...

2022-11-24 12:09:13,356-INFO [WEB] [wss://qlikserver1.domain.local/hub/qrsData] - socket.onopen =>void PresentationManagerImpl::notifyMessageFromJavascript(QString)

Below error in Qlik Sense Server Proxy logs relate to TLS/SSL/Cipher Suites

The client and server cannot communicate, because they do not possess a common algorithm

Internal Investigation ID(s)

QB-17151