QLowEnergyController: Introduce AuthorizationError

intended to distinguish an arbitrary disconnection
from disconnection due to insufficient authorization/encryption

Change-Id: Ifcf73d0444fe6fd3a8d5d90155f3db572d6e23d1
Reviewed-by: Evgeniy Gagarin <eeiaao@gmail.com>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

src/bluetooth/qlowenergycontroller.cpp

@@ -159,6 +159,9 @@ Q_DECLARE_LOGGING_CATEGORY(QT_BT_WINRT)
                                         This value was introduced by Qt 5.7.
     \value RemoteHostClosedError        The remote device closed the connection.
                                         This value was introduced by Qt 5.10.
+    \value AuthorizationError           The local Bluetooth device closed the connection due to
+                                        insufficient authorization.
+                                        This value was introduced by Qt 5.14.
 */
 
 /*!

src/bluetooth/qlowenergycontroller.h

@@ -66,7 +66,8 @@ public:
         InvalidBluetoothAdapterError,
         ConnectionError,
         AdvertisingError,
-        RemoteHostClosedError
+        RemoteHostClosedError,
+        AuthorizationError
     };
     Q_ENUM(Error)
 

src/bluetooth/qlowenergycontrollerbase.cpp

@@ -106,6 +106,9 @@ void QLowEnergyControllerPrivate::setError(
     case QLowEnergyController::RemoteHostClosedError:
         errorString = QLowEnergyController::tr("Remote device closed the connection");
         break;
+    case QLowEnergyController::AuthorizationError:
+        errorString = QLowEnergyController::tr("Failed to authorize on the remote device");
+        break;
     case QLowEnergyController::NoError:
         return;
     default: