Hello, I have a couple of IOT devices that communicate via WebSockets to our backend. I successfully managed to create a websocket connection between server and (iot)client using %CSP.WebSocket However I would like to implement authentication on this using the HTTP headers at the same time of Connection: Upgrade. I tried to set the headers to globals in order to debug but they are always empty. Example code:  Method OnPreServer() As %Status { Try {     s ^Header("HTTP_AUTHORIZATION")=%request.GetCgiEnv("HTTP_AUTHORIZATION")     s ^Header("AUTHORIZATION")=%request.GetCgiEnv("AUTHORIZATION")     s ^Header("REMOTE_USE")=%request.GetCgiEnv("REMOTE_USER")     s ^Header("Sec-WebSocket-Protocol")=%request.GetCgiEnv("Sec-WebSocket-Protocol")   } Catch {     g ^%ETN   }   q $$$OK } Is there an other way to access the http headers before completing the websocket connection?