Hi Alexander, thanks for your reply.
It's not noted in the API but given a `QBluetoothSocket`, I was
wondering what `socketDescriptor` corresponds to and whether I can use
that somehow to obtain the socket pointer that can be used with Bluez'
`bind()`?
In any case, is there planned support for binding a `QBluetoothSocket`
to a `QBluetoothAddress`? Should I open a feature request in the issue
tracker?
As a final note: On various Android devices (that already have Bluetooth
adapters on board), I attached external dongles via OTG and they are
indeed listed by `lsusb`. However, nothing happens as far as the
Bluetooth stack is concerned, I don't even think there is any support
for enumerating adapters in the Android Bluetooth stack.
On 25.11.2016 12:35, Alexander Blasche wrote:
-----Original Message-----
From: Interest [mailto:interest-bounces+alexander.blasche=qt.io@qt-
project.org] On Behalf Of Ayberk Özgür
Sent: Friday, 25 November 2016 09:39
To: interest@qt-project.org
Subject: [Interest] [Qt Bluetooth] How to choose local adapter when connecting
to service with QBluetoothSocket?
Hello,
In the presence of multiple Bluetooth adapters, is it possible to specify which
local adapter to use when creating a QBluetoothSocket or calling
QBluetoothSocket::connectToService()?
The local adapter cannot be chosen everywhere. The following API elements
support the feature you are describing:
QBluetoothLocalDevice(QBluetoothAddress, , QObject*)
QBluetoothDeviceDiscoveryAgent(QBluetoothAddress, QObject*)
QBluetoothServiceDiscoveryAgent(QBluetoothAddress, QObject*)
QBluetoothServer::listen(QBluetoothAddress, QString)
None of the other classes has support for it.
I'm interested in Linux/BlueZ as well as
Android (where it is not even clear whether multiple Bluetooth adapters are
supported by the Bluetooth stack).
The behaviour above was tested for Bluez. In theory this should work on Android
as well but since I have yet to get an Android device that actually has two
adapters it was never tested and I would not rule out essential implementation
details missing. In fact, I have even seen comments indicating that Android as
platform was not really tested for such a setup. There might be problems there
too.
--
Alex
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--
Ayberk Özgür, Doctoral Researcher
CHILI Laboratory, EPFL
www.ayberkozgur.com
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