How to connect to HSQLDB 'split' database in multi-user server mode on Mac OSX?

I have looked at the AOO BASE FAQ (especially) the section How do I setup multi-user ‘server mode’ access to my HSQL database? and also tried to follow Chapter 15 of the HSQLDB Guide - especially the section entitled Setting up a HyperSQL Persistent Database Catalog and a HyperSQL Network Listener, but as yet I cannot get anything to work (with the test sample database mydb.server.odb given in the first reference.

Has anyone else been able to connect to an HSQLDB database in multi-user (server) mode on Mac OSX or Linux? Documentation seems very sparse! I’d appreciate any help or tips.

If you hadn’t said all that I’d say it’s totally impossible. I’ll check when I have the chance.