| Re: [milo-dev] NullPointerException in milo while reconnecting to OPC server |
Hi Kevin!,
It's not critical for us (OPC barely goes down), so take your time.
I'm speaking with our client in order to get a test environment were we can check the new version (he only have a production environment for now). I will come to you with the results asap.
Regards._______________________________________________El jue, 22 abr 2021 a las 13:43, Kevin Herron (<kevinherron@xxxxxxxxx>) escribió:Jose,I am doing a release of 0.6.1-M1 right now, which is something that will be published to Maven Central and perhaps can be used to verify it fixes the issue. If there are no problems I will publish a 0.6.1 release with exactly the same contents._______________________________________________On Thu, Apr 22, 2021 at 4:40 AM José García Hernández <jgarcia@xxxxxxxxxxx> wrote:Thanks for your effor and your awesome lib!
Regards._______________________________________________El jue, 22 abr 2021 a las 13:36, Kevin Herron (<kevinherron@xxxxxxxxx>) escribió:Jose,I am not aware of any workaround. I will try to release 0.6.1 today._______________________________________________On Thu, Apr 22, 2021 at 4:32 AM José García Hernández <jgarcia@xxxxxxxxxxx> wrote:Hi Kevin!,
Seeing the log that I attached before, it seems that the client reconnects, but the events " onSubscriptionTransferFailed" or " onSubscriptionStatusChanged" are not fired.
In 0.5.4 those events were fired when our OPC was restarted, so we resubscribed all the monitored items we needed.
Is there some other event we can implement in 0.6.0 to achieve same result? Estimated date for 0.6.1 if possible?
Thanks for your help!_______________________________________________El jue, 22 abr 2021 a las 13:22, Kevin Herron (<kevinherron@xxxxxxxxx>) escribió:Jose,This issue should be fixed in 0.6.1: https://github.com/eclipse/milo/pull/809I think it has existed for some time now but was only exposed with proper uncaught exception handlers installed recently.Does your client still reconnect?_______________________________________________On Thu, Apr 22, 2021 at 12:26 AM José García Hernández <jgarcia@xxxxxxxxxxx> wrote:Greetings,_______________________________________________
In our production systems we are seeing an error after our OPC is restarted:
ERROR: Uncaught Exception on shared stack ExecutorService thread!java.lang.NullPointerException: null
at org.eclipse.milo.opcua.sdk.client.session.SessionFsmFactory.lambda$null$31(SessionFsmFactory.java:531)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
We are already using events "onSubscriptionTransferFailed" and "onSubscriptionStatusChanged". In other cases they are called, but not in this one. Log attached.Is it a bug in milo? Can we reconnect using another event or listener?
Note: we cannot use Wireshark or something similar to inspect network.
Regards.
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