How to execute an iRule before VMware View Logon Page is presented to the user?

Came across this issue today when setting up Yubikey 2FA for vmware view.

Essentially following this technical article but modify for vmware view.

The article requires you configure a irule event but unfortunately this is not support after a vmware view logon screen as per the bug listed above.

I ended up creating a vmware view disclaimer screen and setting the domain to 'YUBIKEY'

When the view client accesses the disclaimer screen its generated this URI

HttpRequest[GET /renderer/agent_logon_page_view.eui?view-screen=2&view-domains=YUBIKEY&view-auth-label= HTTP/1.0]

Notice how the domain is set to 'YUBIKEY'

I then create an iRule looking for this info....

when HTTP_REQUEST { if { [string tolower [HTTP::uri]] contains "yubikey" }

This allow the yubikey modex hex irule to run, but obviously creates another screen for the end user to click on.