Wildcards
You can specify wildcards in topic names. For each actual topic, the server uses logical AND to combine all the selectors that match the topic.
Note:
However, routing of topic messages is only reliably supported when the subscriber's topic is a subset (or equal) of the configured global topic. Similarly, intersections are not supported. For example, if
topics.conf contains
foo.*
and
foo.a*
, the following subscriptions are correct:
foo.* foo.1 bar.a.b
The following subscriptions are not correct:
foo.> bar.*.b