Hi, I have obtained further information from our local Solace administrator regarding this issue. It seems as part of change to upgrade a disk array for the appliance in question, the message spool on the appliance was restarted. This must have caused the com.solacesystems.jcsmp.JCSMPTransportException: Received unsolicited CloseFlow for producer (503:Service Unavailable) exception seen on our clients. However, as the connection to the appliance was still active, there was no reconnection required.
So my question is, what would be the recommended approach on receiving this exception? Attempt to re-create the flows that have been closed?