[libvirt] libvirtd: how to react on qemu watchdog events

Hi, I'm currently seeking a way to monitor qemu watchdog events and do somthing based on these events. Although there is a good example at libvirt-source/examples/domain-events/events-c/event-test.c to start with, and I did achieve my goal by little modification of the example, but it ran as a libvirt client. How can I make libvirtd monitor the events and react on them? Thanks a lot!