We have a (mostly) working custom authentication provider which allows us to perform some remote configuration on a target RDP server after a user has successfully authenticated on the guacamole web interface. This is done via a Listener handling the TunnelConnectEvent associated with a successful login coupled with getting the user's authentication credentials.
We now need to extend this by passing some additional information in the URL used to login—for example if the user goes to https://guacamole.server/#/?setting=42, we need to be able to get that key / value pair at the point the tunnel connects (once they've authenticated). I tried in the authenticateUser() overload of our custom auth provider, and although I can see that query string on the initial page load (from credentials.getRequest()), when they fill in their username / password and click 'login', the next call to authenticateUser() only provides username and password in the request parameters, and the URL parameters are missing. I did try storing the URL parameters on the first load of the page, but that seems quite fragile—if the user changes them without a page refresh, they won't be updated, etc. Is there any way to get the actual current URL the client is using at the point of connection? Many thanks, David