LDS server doesn't receives unsolicited announcements from OPC UA server

[z-krejsa]

Our server sends unsolicited announce frames during initialization ...

The frames seems to be correct to me but they are not processed by the LDS server, the OPC UA server doesn't appear in the discovered servers list.
I've changed the logging of LDS service to "debug" mode to see all the events, but there doesn't appear anything during receiving of this frames.
Can you let me know why it doesn't work, what's the problem?

[erhardgrishaber]

@z-krejsa See explanation from Issue #76

[z-krejsa]

Even with hostnames and FQDN names, our server doesn't appear in the ServersOnNetwork list. The LDS service need to be restarted and then our OPC UA server appears in the list. Any idea of the cause of the problem ?

[erhardgrishaber]

Can you check the configuration file: C:\ProgramData\OPC Foundation\UA\Discovery\ualds.ini for "EnableZeroconf" It should be "yes". Also it can help to look into the log files for more information (opcualds.log). By default it is set to "error", so please change it to "debug" in the configuration file (see LogLevel) and restart the service.

[z-krejsa]

Zeroconf is enabled, I've checked it out. The log with debug traces is connected, but I cannot see something inside. The behavior is as I said, our device is properly recognized just after restarting the OPC UA Local Discovery Server service.
Strange thing is that sometimes it appears there immediately without restarting the service but I cannot find when, seems to me by chance.
When it works there appears following message in the log but as I said it's quite rare ...