Disable the Desktop Host "Discovery" Process in the Web Client

[MikeBruckner]

I'm currently working on our upgrade to OnBase 22.1, and was curious to see if anyone has found a way to disable the Desktop Host "discovery" process within the web client? 

For reference, the "discovery" process I'm referring to here is that upon logging into the web client, the user's browser will search for the desktop host by making a handful of calls to http[://]127.0.0.1/discovery (stopping early if the Desktop Host is actually installed and running).

This approach isn't dissimilar from other apps that have similar desktop host integrations, however, within our environment, when these calls are made, the Content Security Policy that we have configured on our web server blocks them. This effectively means that every time a user logs into the web client, we get 11 Content Security Policy violation reports.

We could of course add a CSP directive to allow these calls (for those in a similar position who ARE using the desktop host and have a Content Security Policy set, the directive you would need to add is: connect-src http://127.0.0.1:*/discovery), however, as a security best practice, I'd like to avoid adding anything to our CSP that we know is not (technically) needed within our environment at this time - if at all possible.

Thanks!
-Mike

[Avinash_Mittapa]

Hi Mike,

We are getting same error when we turn on virtual print driver for web client in 22.1 version. turning vpd to false will not display this message. 

Is there any instructions for vpd to function in web client.

Regards,

Avinash

[AdamShaneHyland]

Hi @Avinash Mittapalli ,

Here is the documentation for OnBase 22.1 to enable the Virtual Print Driver for the OnBase Web Client.

https://support.hyland.com/r/OnBase/Web-Server/English/Foundation-22.1/Web-Server/Module-Specific-We...

Additionally, you'll need the Desktop Host installed and working.  Here is the documentation for the component ...

https://support.hyland.com/r/OnBase/Web-Server/English/Foundation-22.1/Web-Server/Desktop-Host-Insta...

Take care.

[Raymond_Colbert]

Hi @Avinash Mittapalli ,

What we ended up doing was advised by someone in our first line of support.
Make a copy of the web site on the web server.  Set up one web site with Virtual Print Driver enabled, set up the other with it disabled.  Give one URL to people using the VPD and the other URL to those not using it.
Hope this helps.

Ray

[Avinash_Mittapa]

Thanks a lot for your inputs @Adam Shane & @Ray Colbert 

We have installed Desktop Host in User workstation and added whitelist address as web client i.p:8080 and web client url https://stageonbase.com and added load services on start up line as per MRG, but still we see error in web client.  

Is there something that I am missing with the configuration on onbase server or desktop host config in user machine. also fyi - vpd is latest version and print spooler is running and web client is on 22.1.3.1000.

[AdamShaneHyland]

Hi @Avinash Mittapalli ,

The Desktop Host is an app running on the client workstation.  It should be accessible from browser as it makes local calls to the app running on the client workstation.  If you are encountering issues, I would check the the Desktop Host is installed and running on the client workstation.

I would expect that you would see errors in the Console or Network tabs of Developer Tools in the browser to help troubleshoot the issue.

Take care.