Re: Unable to connect to device after connected_callback() has run

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Hi Steven,

On Sat, Sep 26, 2015 at 12:35 PM, <linux-bluetooth-list@xxxxxxxxxxx> wrote:
>
> Hi,
>
> Following on from my problems with GATT discovery, I now have another
> issue: I have a Python program which waits for the Connected=True
> PropertiesChanged callback from dbus, then sends a WriteValue to a
> GattCharacteristic1 interface.
>
> The issue is that immediately after the Connected=True message comes
> back, a WriteValue fails with "DBusException: org.bluez.Error.Failed:
> Not connected". However, calling the WriteValue a few seconds later
> executes correctly.

I had same issue, and I sent patches to fix it around 2 weeks ago.
Which version of  bluetoothd are you using ?
Can you retry when running from repository master ?


>
> I have bluetoothd running with the debug flag and this is the output
> (sorry it's long - also in pastebin at http://pastebin.com/bnNRGpMq):
>
> Sep 26 19:43:17 bang MainThread:dbusbackend.py@298 Connect to
> B0:B4:48:B9:77:03
> Sep 26 19:43:17 bang bluetoothd[22254]:
> src/device.c:device_set_auto_connect() B0:B4:48:B9:77:03 auto connect: 1
> Sep 26 19:43:17 bang bluetoothd[22254]: src/device.c:device_connect_le()
> Connection attempt to: B0:B4:48:B9:77:03
> Sep 26 19:43:17 bang bluetoothd[22254]:
> src/adapter.c:add_device_complete() B0:B4:48:B9:77:03 (1) added to
> kernel connect list
> Sep 26 19:43:17 bang bluetoothd[22254]: src/device.c:gatt_debug() MTU
> exchange complete, with MTU: 23
> Sep 26 19:43:18 bang bluetoothd[22254]:
> src/adapter.c:connected_callback() hci0 device B0:B4:48:B9:77:03
> connected eir_len 0
> Sep 26 19:43:18 bang kernel: [21277.597432] Bluetooth: SMP security
> requested but not available
> Sep 26 19:43:18 bang bluetoothd[22254]: attrib/gattrib.c:g_attrib_ref()
> 0x80f0f148: g_attrib_ref=1
> Sep 26 19:43:18 bang bluetoothd[22254]: src/device.c:attio_connected()
> Sep 26 19:43:18 bang bluetoothd[22254]: attrib/gattrib.c:g_attrib_ref()
> 0x80f0f148: g_attrib_ref=2
> Sep 26 19:43:18 bang bluetoothd[22254]: attrib/gattrib.c:g_attrib_ref()
> 0x80f0f148: g_attrib_ref=3
> Sep 26 19:43:18 bang bluetoothd[22254]: src/device.c:gatt_debug() MTU
> exchange complete, with MTU: 23
>
> Sep 26 19:43:18 bang Thread-4:base.py@114 Job "Heating.get_temperature
> (trigger: cron[second='0'], next run at: 2015-09-26 19:44:00 BST)"
> raised an exception: DBusException: org.bluez.Error.Failed: Not connected
>
> Sep 26 19:43:18 bang bluetoothd[22254]: attrib/gattrib.c:g_attrib_ref()
> 0x80edbed8: g_attrib_ref=4
> Sep 26 19:43:18 bang bluetoothd[22254]:
> attrib/gattrib.c:g_attrib_unref() 0x80edbed8: g_attrib_unref=3
> Sep 26 19:43:18 bang bluetoothd[22254]:
> attrib/gattrib.c:g_attrib_unref() 0x80edbed8: g_attrib_unref=2
> Sep 26 19:43:19 bang bluetoothd[22254]: attrib/gattrib.c:g_attrib_ref()
> 0x80f0f148: g_attrib_ref=4
> Sep 26 19:43:19 bang bluetoothd[22254]:
> attrib/gattrib.c:g_attrib_unref() 0x80f0f148: g_attrib_unref=3
> Sep 26 19:43:19 bang bluetoothd[22254]:
> attrib/gattrib.c:g_attrib_unref() 0x80f0f148: g_attrib_unref=2
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug()
> Primary services found: 13
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0001, end: 0x0007, uuid: 00001800-0000-1000-8000-00805f9b34fb
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0008, end: 0x000b, uuid: 00001801-0000-1000-8000-00805f9b34fb
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x000c, end: 0x001e, uuid: 0000180a-0000-1000-8000-00805f9b34fb
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x001f, end: 0x0026, uuid: f000aa00-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0027, end: 0x002e, uuid: f000aa20-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x002f, end: 0x0036, uuid: f000aa40-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0037, end: 0x003e, uuid: f000aa80-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x003f, end: 0x0046, uuid: f000aa70-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0047, end: 0x004b, uuid: 0000ffe0-0000-1000-8000-00805f9b34fb
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x004c, end: 0x0050, uuid: f000aa64-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0051, end: 0x0058, uuid: f000ac00-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0059, end: 0x0060, uuid: f000ccc0-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]: src/device.c:gatt_debug() start:
> 0x0061, end: 0xffff, uuid: f000ffc0-0451-4000-b000-000000000000
> Sep 26 19:43:19 bang bluetoothd[22254]:
> src/device.c:gatt_client_ready_cb() status: success, error: 0
> Sep 26 19:43:19 bang bluetoothd[22254]:
> src/device.c:device_svc_resolved() /org/bluez/hci0/dev_B0_B4_48_BA_47_03
> err 0
> Sep 26 19:43:19 bang bluetoothd[22254]:
> profiles/gap/gas.c:gap_driver_accept() GAP profile accept
> (B0:B4:48:BA:47:03)
> Sep 26 19:43:19 bang bluetoothd[22254]:
> profiles/gap/gas.c:handle_characteristic() Unsupported characteristic:
> 00002a04-0000-1000-8000-00805f9b34fb
> Sep 26 19:43:19 bang bluetoothd[22254]:
> src/gatt-client.c:btd_gatt_client_ready() GATT client ready
> Sep 26 19:43:20 bang bluetoothd[22254]: src/device.c:gatt_debug()
> Registered handler for "Service Changed": 1
> Sep 26 19:43:20 bang bluetoothd[22254]:
> profiles/gap/gas.c:read_device_name_cb() GAP Device Name: SensorTag 2.0
> Sep 26 19:43:20 bang bluetoothd[22254]:
> src/device.c:btd_device_device_set_name()
> /org/bluez/hci0/dev_B0_B4_48_BA_47_03 SensorTag 2.0
> Sep 26 19:43:20 bang bluetoothd[22254]:
> profiles/gap/gas.c:read_appearance_cb() GAP Appearance: 0x0000
>
> And after this point if my code calls WriteValue again it completes
> successfully.
>
> Note: I have two of the same device so if there are duplicate lines that
> would explain why. The same thing happens with both devices.
>
> Any help would be gratefully received.
>
> Thanks
> Steven Davies
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