splatch commented on issue #1364:
URL: https://github.com/apache/plc4x/issues/1364#issuecomment-1999511340

   Ok, I've found reason - refreshing of OPC UA token turns subscription into 
"stale" mode. I've made second run with trace logging and found this:
   
   ```
   -03-15 12:47:49,038 DEBUG | plc4x-tm-thread-2 | 
org.apache.plc4x.java.opcua.context.Conversation | Submitting Transaction to 
TransactionManager 2705, security channel 20, token 1  (subscription publish 
request)
   2024-03-15 12:47:49,502 DEBUG | nioEventLoopGroup-3-1 | 
org.apache.plc4x.java.opcua.context.Conversation | Received response made of 
136 bytes for message id: 2705, channel id:20, token:1 (subscription publish 
response)
   c 2024-03-15T12:47:49.502658 7 OK
   2024-03-15 12:47:49,504 DEBUG | plc4x-tm-thread-3 | 
org.apache.plc4x.java.opcua.context.SecureChannel | Sending open secure channel 
message to opc.tcp://arch:4840/OPCUA/SimulationServer (token refreshing)
   ```
   
   The last message marks a moment when subscription stopped to work. This part 
was touched with UA security updates, however scope of changes in this area was 
fairly limited. Bug is confirmed and identified.


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