Hi link2tdss,

The latest client JavaScript libraries provide the following method, getSessionId, or alternatively the opportunity to detect the change of the session id through this listener.
Then your browser application can freely arrange an HTTP request for your web server with session id packed somehow.

But please, consider also the option to let the LS server and web server cooperate for this purpose. In fact, through the method notifyNewSession your adapter could keep updated the web server with a User-SessionsIds map.

Please let me know if one of this options may be helpful in your case.

Regards,
Giuseppe