QBluetoothServiceDiscoveryAgent serviceDiscovered signal sends QBluetoothServiceInfo serviceUuid that is always "{00000000-0000-0000-0000-000000000000}"

I pulled source code and built Qt5 dev branch on 2015-02-04 as I was eager to test Qt5.5 Bluetooth support coming to OS X and iOS.

commit 9347499e78f03710eaf24af3c1e7ac650d0ef81d
Author: Qt Submodule Update Bot <qt_submodule_update_bot@ovi.com>
Date: Thu Jan 29 05:34:55 2015 +0200

Problem:
------------
The QBluetoothServiceDiscoveryAgent serviceDiscovered signal sendsserviceUuid always sends QBluetoothServiceInfo serviceUuid that is always "

{00000000-0000-0000-0000-000000000000}" for any device.

For example:

http://doc.qt.io/qt-5/qtbluetooth-btscanner-example.html

void ServiceDiscoveryDialog::addService(const QBluetoothServiceInfo &info) { qDebug("dbg: === serviceDiscoveredHandler ==="); qDebug("dbg: found serviceUuid: \"%s\"", info.serviceUuid().toString().toStdString().c_str()); qDebug("dbg: found serviceName: \"%s\"", info.serviceName().toStdString().c_str()); if (info.serviceName().isEmpty()) return; QString line = info.serviceName(); if (!info.serviceDescription().isEmpty()) line.append("\n\t" + info.serviceDescription()); if (!info.serviceProvider().isEmpty()) line.append("\n\t" + info.serviceProvider()); ui->list->addItem(line); }

dbg: === serviceDiscoveredHandler ===
dbg: found serviceUuid: "{00000000-0000-0000-0000-000000000000}

"
dbg: serviceName: "Bluetooth Serial Port"

When I try to ignore and connect to my device using the known good non-zero service ID supported by my device that works on Android it connects, but when I try to send data using QBluetoothSocket::write() I see:

QMetaObject::invokeMethod: No such method QBluetoothSocketPrivateBase::qint64 QBluetoothSocketPrivate::writeData(const char *, qint64)()

I am very excited about Qt 5.5 bringing Bluetooth support for OS X and iOS. Qt 5.4 Bluetooth works great for me on Android. I hope it will comes to Windows in the future.