Measuring User Connection Speed in Scenegraph Application

This worked for me...

Setup a roSystemLog event in the main thread that pushes .bandwidth to the global var. Then just use an observeField on the global var that pushes the data to the Render node.

So for example....

Sub RunUserInterface(args As Object)
    screen = CreateObject("roSGScreen")
    scene = screen.CreateScene("HomeScene")
    port = CreateObject("roMessagePort")
    
    m.global = screen.getGlobalNode()
    m.global.addFields( { bandwidthMetric: 0 } )

    syslog = CreateObject("roSystemLog")
    syslog.SetMessagePort(port)
    syslog.EnableType("bandwidth.minute")
   
    while true
         msg = wait(0,port)
         if type(msg) = "roSystemLogEvent" then
             i = msg.GetInfo()
             if i.LogType = "bandwidth.minute" then
                  
                  m.global.bandwidth = i.bandwidth
             end if
         end if
    end while
End Sub

Then in your scenegraph init...

    Function Init()
         m.global.ObserveField("bandwidth", "PushToScreen")
    End Function
    
    Sub PushToScreen()
         m.bandwidth             =   m.top.findNode("Bandwidth")
         m.bandwidth.text        =   "Bandwidth: " + m.global.bandwidth.toStr()
    End Sub