Hi Youssif, On Thu, 24 Jan 2019, 17:07 Youssif Saeed <youssif.am.saeed@xxxxxxxxx wrote: > > On Mon, Jan 21, 2019 at 3:02 PM Luiz Augusto von Dentz > <luiz.dentz@xxxxxxxxx> wrote: > > > > Hi Youssif, > > On Mon, Jan 21, 2019 at 3:57 PM Youssif Saeed > > <youssif.am.saeed@xxxxxxxxx> wrote: > > > > > > Hi Luiz > > > > > > On Mon, Jan 21, 2019 at 12:12 PM Luiz Augusto von Dentz > > > <luiz.dentz@xxxxxxxxx> wrote: > > > > > > > > Hi Youssif, > > > > > > > > On Mon, Jan 21, 2019 at 1:05 PM Youssif Saeed > > > > <youssif.am.saeed@xxxxxxxxx> wrote: > > > > > > > > > > Hi > > > > > > > > > > Is there a tool/utility for browsing the local GATT table. I have so > > > > > far used "bluetoothctl info" as follows:- > > > > > > > > > > [bluetooth]menu gatt > > > > > [bluetooth]register-service 0xFFFF > > > > > [bluetooth]register-characteristic 0xAAAA read,write > > > > > [bluetooth]register-application > > > > > [bluetooth]back > > > > > [bluetooth]info > > > > > Controller 00:16:A4:09:31:11 (public) > > > > > Name: linuxvm > > > > > Alias: linuxvm > > > > > Class: 0x000c0000 > > > > > Powered: yes > > > > > Discoverable: no > > > > > Pairable: yes > > > > > UUID: Headset AG (00001112-0000-1000-8000-00805f9b34fb) > > > > > UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb) > > > > > UUID: A/V Remote Control (0000110e-0000-1000-8000-00805f9b34fb) > > > > > UUID: Generic Access Profile (00001800-0000-1000-8000-00805f9b34fb) > > > > > UUID: PnP Information (00001200-0000-1000-8000-00805f9b34fb) > > > > > UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb) > > > > > UUID: Audio Source (0000110a-0000-1000-8000-00805f9b34fb) > > > > > UUID: Audio Sink (0000110b-0000-1000-8000-00805f9b34fb) > > > > > UUID: Unknown (0000ffff-0000-1000-8000-00805f9b34fb) > > > > > UUID: Headset (00001108-0000-1000-8000-00805f9b34fb) > > > > > Modalias: usb:v1D6Bp0246d0532 > > > > > Discovering: no > > > > > > > > > > However, this does not show the list of characteristics/descriptors > > > > > and their handles which is what I am after. > > > > > > > > > > I am using BlueZ 5.50 on an Ubuntu machine running Linux 4.15.0-43-generic. > > > > > > > > I guess you would be after the registered local attributes, command > > > > info doesn't print that only the UUID of the services, we could have > > > > then as part of list-attributes perhaps but it would only show the > > > > attributes register by that instance of bluetoothctl nothing else. As > > > > for the handles that is currently not exposed to the application, do > > > > you require them perhaps to restore them in the same location? > > > > > > > > -- > > > > Luiz Augusto von Dentz > > > > > > Thanks for getting back to me. Yes I am after the registered local > > > attributes. We're working on PTS testing the BlueZ stack and a few > > > tests require you to submit handles for the local GATT > > > services/characteristics, which is why having this would be very > > > useful. In my personal opinion the output to the deprecated "gatttool > > > primary/characteristics/descriptors" is ideal for displaying all the > > > necessary information. Something similar to this but for the local > > > GATT table can be very beneficial for future users even outside the > > > scope of PTS testing. > > > > I will need to look into that, we actually intend to have this all > > automated with auto-pts: > > > > https://github.com/intel/auto-pts > > > > Though that is not complete for BlueZ, only Zephyr, and even in case > > of Zephyr we hardcoded the handles, but I agree it is better to > > somehow notify the handle back to the application. Also another thing > > that we might have to improve in the future is a way to pin services > > so even if one reboot the system, or just restart bluetoothd, the > > application can have its services in the same region once again. > > > > -- > > Luiz Augusto von Dentz > > Thanks for the link. I've seen the auto-pts project and it's quite > impressive. It's definitely helpful when doing PTS tests but as you > said it is missing a big portion for the BlueZ stack. > > Is there a place where we can post feature requests and unconfirmed > bugs, or is this mailing list the best location for that? > You can file issues in github direcly. > > I think it will be handy as well to report the handle back for remote > services/characteristics. As an example, this is the response for > "list-attributes":- > > Primary Service > /org/bluez/hci0/dev_00_1B_DC_08_0A_D4/service0014 > 00001801-0000-1000-8000-00805f9b34fb > Generic Attribute Profile > Characteristic > /org/bluez/hci0/dev_00_1B_DC_08_0A_D4/service0014/char0015 > 00002a05-0000-1000-8000-00805f9b34fb > Service Changed > > Unfortunately there are many PTS tests that list multiple attributes > with the same UUID but different handles. This is rare for everyday > application but it is not impossible. Again, the output of the > deprecated "gatttool primary/characteristics/descriptors" showed all > the necessary information including the properties and permissions, > and it would be extremely useful if something similar was implemented > to bluetoothctl. Ive send an RFC regarding that, please have a look if that makes sense.
