Bluetooth never fires connected signal

[Adam Parker]

I am connecting to a BLE device. Scanning works well but I go to connect and the device seems to think it's connected to the computer (shows connection and disconnected events) but QT never seems to fire the connected signal so I can act on this. I have tested this code against 5.14 and 5.15.

#include "token.h"

Token::Token(QObject *parent) : QObject(parent)
{
    m_init = false;
    m_pBleController = nullptr;
    m_connected = false;
}

void Token::Connected()
{
    qDebug("Connected");
    setConnected(true);
}

void Token::Disconnected()
{
    qDebug("Disconnected");
    setConnected(false);
}

void Token::ConnectDevice(const QBluetoothDeviceInfo &device)
{
    if (m_pBleController != nullptr)
    {
        if (m_pBleController->state() == QLowEnergyController::ConnectedState)
        {
            m_pBleController->disconnectFromDevice();
            setConnected(false);
        }
    }

    qDebug("CreateController for %s", device.address().toString().toStdString().c_str());

    m_pBleController = QLowEnergyController::createCentral(device, this);
    connect(m_pBleController, &QLowEnergyController::connected, this, &Token::connected);
    connect(m_pBleController, &QLowEnergyController::disconnected, this, &Token::Disconnected);
    connect(m_pBleController, static_cast<void (QLowEnergyController::*)(QLowEnergyController::Error)>(&QLowEnergyController::error),
            this, [=](QLowEnergyController::Error error) {
        qDebug("Cannot connect to remote device: %d", error);
    });

    m_pBleController->connectToDevice();

    qDebug("Connect to %s started", device.address().toString().toStdString().c_str());
}

void Token::FoundDevice(const QBluetoothDeviceInfo &device)
{
    std::string deviceName = device.name().toStdString();
    qDebug("Found BLE device: %s", deviceName.c_str());
    if (deviceName == "TokenDevice")
    {
        m_blFinder.stop();
        ConnectDevice(device);
    }
}

void Token::InitDisoveryAgent()
{
    connect(&m_blFinder, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered, this, &Token::FoundDevice);
    m_blFinder.setLowEnergyDiscoveryTimeout(5000);

    m_init = true;
}

bool Token::scanForToken()
{
    if (m_init == false)
    {
        InitDisoveryAgent();
    }

    m_blFinder.start(QBluetoothDeviceDiscoveryAgent::DiscoveryMethod::LowEnergyMethod);

    return true;
}

bool Token::connected() const
{
    return m_connected;
}

void Token::setConnected(bool connected)
{
    if (m_connected == connected)
        return;

    m_connected = connected;
    emit connectedChanged(m_connected);
}