The SubscriptionDataReaderHistoryProvider was using StubResultHandler, so no error messages were being shown or logged. By adding events to IHistoryProvider and SubscriptionDataReader, the dependency on IResultHandler could be removed completely and error messages are now pushed up the stack.
This is only a mechanical refactor for the updated IHistoryProvider.Initialize method in all IHistoryProvider implementations, call sites and unit tests.
- Adding an internal check to the HistoryRequest.FillForwardResolution {get}
that will return null when resolution is set to Resolution.Tick
- Adding unit tests which reproduce the original issue
Stefano Raggi