Check whether a dbus caller is still alive

[Simon McVittie]

On Mon, 02 Oct 2017 at 08:55:36 +0100, David Llewellyn-Jones wrote:
> The following will turn my invocation into its unique sender name:
> 
> const gchar * unique_name;
> unique_name = g_dbus_message_get_sender
>     (g_dbus_method_invocation_get_message (invocation));
> 
> Now waiting on a "NameOwnerChanged" signal with old_owner matching
> unique_name and new_owner matching "" indicates that the owner of that
> message is no longer interested.

This is the correct approach, please continue to use it.

    smcv