Es.
REST CALL -> KillAllHumans
NODEJS -> pass KillAllHumans to websocket;
BROWSER -> onmessage -> javascript_library.killAllHumans;

echo_service = new WebSocket(websocketUrl,"echo-protocol");
    echo_service.onmessage = function(event)
    {
       var result = javascript_library.manageAction(event.data);
       return result;
    }