Not always getting the "Disconnected" signal

[Alberto Mardegan]

Hi all!
  I've a D-Bus service which should exit when it gets disconnected from
the session bus. It does so in this way:

======
    connection.connect(QString(),
                       QLatin1String("/org/freedesktop/DBus/Local"),
                       QLatin1String("org.freedesktop.DBus.Local"),
                       QLatin1String("Disconnected"),
                       this, SLOT(onDisconnected()));
======

and exiting in the onDisconnected() method. This works fine, normally:
if I kill the dbus-server running the session bus, I can see that the
onDisconnected() method is called and the service exits.

However, when the same service is started within a session created by
dbus-launch or dbus-test-runner (which I'm using for running the unit
tests), I can see that the dbus-server quits at the end of the unit
test, but my service's onDisconnected() method is not called, and the
service happily continues to live on as if nothing happened.

I wonder, is this behaviour somewhat configurable? I'm asking this
because for the unit tests I'm using a specific configuration file
(which I'm attaching). Maybe I'm missing some setting there?

If not, any idea of what could be going wrong?

TIA,
  Alberto
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