Subscription notifications and acknowledgements are not working correctly

[locka99]

Subscriptions and monitored items are sort-of working, i.e. an item can be monitored and its value is changing, but some of the notifications are coming back with old values and there is an issue with publish request acknowledgements. Some clients are printing errors of unknown acknowledgements.

It means that monitoring is sending data but it skips values.

[locka99]

This is a 0.4 blocker.

[locka99]

Subscription code is working a lot better now. Client and server are asynchronous internally so publish and response are decoupled and the code is generally better tuned to throttle publish requests based on number of subscriptions.