I'm trying to find out how to use Eclipse Milo, and finding out how subscriptions go. I can easily get any MonitoringMode.Reporting mode subscription to work, but when I use Sampling it doesn't call the callback method (as expected). According to the docs it's supposed to "queue" up the values without calling the callback, but I can't find any place I can access that queue or anything similar. The UaMonitoredItem doesn't have anything in its interface that looks like it, neither does the request.
It's probably something obvious, but what am I doing wrong?
Thank you in advance!
Answered in the GitHub repo discussions, but for posterity:
MonitoringMode.Sampling simply means the server continues to sample the underlying but does not report the values to the client.
The queued values are not available to you. If you change back to MonitoringMode.Reporting then they would be the first values reported for that item.