Interesting. Works now (sort of) with IA92 Java client, but mosquitto_sub -t $SYS/ (or $SYS/#) returns immediately with mosquitto itself having crashed.
The first time I subscribe on $SYS/# in the Java app I get a null index exception, then it works. Could be a bug in the client though.
Incidentally I noticed that when I subscribed in the Java app to $SYS/# I saw a topic of $SYS/broker/clients/total (undocumented in the man page) which lists "19" - is that historical?
Interesting. Works now (sort of) with IA92 Java client, but mosquitto_sub -t $SYS/ (or $SYS/#) returns immediately with mosquitto itself having crashed.
The first time I subscribe on $SYS/# in the Java app I get a null index exception, then it works. Could be a bug in the client though.
Incidentally I noticed that when I subscribed in the Java app to $SYS/# I saw a topic of $SYS/broker/ clients/ total (undocumented in the man page) which lists "19" - is that historical?