What is TIMESTAMP UNSPECIFIED?

[Попов Владимир]

Hello colleagues!

I'm having problems here:

python-opcua/opcua/ua/uatypes.py

Line 47 in 2cfc9bc

 def win_epoch_to_datetime(epch): 

The freeOpcUa client cannot correctly read the history from getHistoryData_service_default
because it has UNSPECIFIED defined as "-1" (1601-01-01 12:00AM UTC).
https://github.com/open62541/open62541/blob/ae74dc0071cc58cf96abeeaf7b9c6c39dd2ed286/plugins/historydata/ua_history_database_default.c#L45

And in open62541 UNSPECIFIED as LLONG_MIN "-9223372036854775808".
So is there a TIMESTAMP UNSPECIFIED?

[Andreas Heine]

The library is deprecated.
Please switch to : opcua-asyncio which also has a sync-wrapper, with very few changes in API**