Hi Edmund, On Wed, Aug 12, 2015 at 12:16 PM, Urbani, Edmund <edmund.urbani@xxxxxxxxxxxx> wrote: > On 08/12/2015 10:02 AM, Anupam Roy wrote: >> >> Hi Edmund, >> >>> >>> Hello, >>> >>> my attempts to register a GATT service via DBus from Java have so far >>> been unsuccessful. The GattManager1.RegisterService method does not >>> return any reply, instead I simply get this timeout exception: >>> Exception in thread "main" org.freedesktop.DBus$Error$ >>> NoReply: No reply within specified time >>> >> As I understand, RegisterService DBUS method in gatt-database replies back >> to >> client only when client is fully ready. It happens when service is >> successfully created >> by gatt-database and all managed objects are successfully retrieved from >> client >> service and parsed by gdbus/client.c. >> >>> Also, all I see in the logs is the registration attempt, but no error: >>> Aug 11 14:42:02 raspberrypi bluetoothd[5466]: >>> src/gatt-database.c:manager_register_service() Registering service - >>> path: /com/lilandit/iventcloud/skg/service >>> >> This print only only suggests that external service is created by >> gatt-database >> >>> Introspection of the service (with mdbus2 tool) shows this info (which >>> matches the specs as far as a DBus noob like I can tell): >>> [METHOD] org.bluez.GattService1.GetPrimary() -> (b:arg_0) >>> [METHOD] org.bluez.GattService1.GetDevice() -> (o:arg_0) >>> [METHOD] org.bluez.GattService1.GetUUID() -> (s:arg_0) >>> [METHOD] org.bluez.GattService1.GetCharacteristics() -> (ao:arg_0) >>> [METHOD] org.bluez.GattService1.GetIncludes() -> (ao:arg_0) >>> [METHOD] org.freedesktop.DBus.Introspectable.Introspect() -> (s:arg_0) >>> [METHOD] org.freedesktop.DBus.Peer.Ping() -> () >>> >>> The implementation of the service is incomplete (same applies to the >>> ObjectManager registered at "/"), however I was expecting to at least >>> get some feedback on registration and possibly see some of the service >>> methods being called at this point. Instead I get nothing. >>> >>> Any ideas what may be wrong or where I should be looking for the cause? >>> >> According to GATT API doc, client service should export ObjectManager >> interface >> on its client root path. If this is not done, then I think >> GetManagedObjects call from gdbus/client will fail and client ready >> will not be invoked and possibly DBUS timeout occurs. >> >> Is your service exporting ObjectManager interface on service root path? >> >>> Kind regards, >>> Edmund >>> >>> PS: I'm using BlueZ 5.32 >> >> > I think I need to clarify that I have exported two objects. The > ObjectManager (path "/" with interface org.freedesktop.DBus.ObjectManager), > and the GattService (path "/com/lilandit/iventcloud/skg/service" with > interface org.bluez.GattService1). Is this OK, or should I have one object > that implements both interfaces? We expect ObjectManager to be in the path where the GattService is in in '/'. > Note that GetManagedObjects is never called (nor are any other methods I > implemented, each of which has a log statement right there in the first > line). Because ObjectManager interface is in a different path which bluetoothd has no idea of. -- Luiz Augusto von Dentz -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
