- add round trip trace message from client and back to tell us where the bottleneck

.../apps/whiteboard/ClientToServerLatencyTracerMsgHdlr.scala

...ton/core/pubsub/senders/ReceivedJsonMsgHandlerActor.scala

...n/scala/org/bigbluebutton/core/running/MeetingActor.scala

...c/main/scala/org/bigbluebutton/core2/AnalyticsActor.scala

...in/scala/org/bigbluebutton/client/meeting/UserActor.scala

...scala/org/bigbluebutton/common2/msgs/WhiteboardMsgs.scala

...utton/red5/client/messaging/ConnectionInvokerService.java

...igbluebutton/core/events/RoundTripLatencyReceivedEvent.as

...rc/org/bigbluebutton/main/views/MainApplicationShell.mxml

...igbluebutton/modules/whiteboard/models/WhiteboardModel.as

...bluebutton/modules/whiteboard/services/MessageReceiver.as

...igbluebutton/modules/whiteboard/services/MessageSender.as