dbus
Aashish Raina
aashish_raina at persistent.co.in
Fri Oct 26 23:53:09 PDT 2007
Hi All Of You
please correct me if i am wrong
I want to broadcast a signal on to the bus,
so that if any interested application wants it.
So that means
1:I need to have a server application which broadcasts a signal.
2:cliesnt will listen to it and receives it.
Right now in my server code
a: I have connected to the system bus.
b: as we know to in dbus every kind of communication happens through
objects:
So now i will create a object from which i can send the signal and in
future send method calls
but in my code
dbus_bus_acquire_service (conn,
"org.pirate.parrot",
0, &error2);
which is used for accuring a service
fails .
It is printing the error message
thatorg.freedesktop.DBus.Error.Disconnected: Disconnected prior to receiving
a reply
one more thing this org/pirate/ is this
path choosen by our choise (i mean if we have 5 objects then 5 diff paths)
//server
main()
{
DBusError error,error2;
DBusConnection *conn;
//dbus_uint32_t serial = 0; // unique number to associate replies with
requests
DBusMessage* msg;
DBusMessageIter args;
dbus_error_init (&error);
conn = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
if (!conn)
{
fprintf (stderr, "%s: %s\n",
error.name, error.message);
return 1;
}
else
printf("%p",conn);
//now sending a message but from a well known address :lets accuire a
service
//Connecting to the system bus is a nice first step, but we want to be able
to send messages from a well-known address. Let's acquire a service:
dbus_bus_acquire_service (conn, "org.pirate.parrot",
0, &error2);
if (dbus_error_is_set (&error2))
{
fprintf (stderr, "%s: %s\n",
error2.name, error2.message);
//dbus_connection_disconnect (conn);
//return;
}
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