Release/v0.22.2

CHANGELOG.rst

@@ -10,6 +10,22 @@ and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0
 `Unreleased`_
 =============
 
+`0.22.2`_ (2024-06-01)
+======================
+
+Changed
+-------
+* Retrieve the BLE address required by ``BleakClientWinRT`` from scan response if advertising is None (WinRT).
+* Changed type hint for ``adv`` attribute of ``bleak.backends.winrt.scanner._RawAdvData``.
+* ``BleakGATTCharacteristic.max_write_without_response_size`` is now dynamic.
+
+Fixed
+-----
+* Fixed ``discovered_devices_and_advertisement_data`` returning devices that should
+  be filtered out by service UUIDs. Fixes #1576.
+* Fixed a ``Descriptor None was not found!`` exception occurring in ``start_notify()`` on Android. Fixes #823.
+* Fixed exception raised when starting ``BleakScanner`` while running in a Windows GUI app.
+
 `0.22.1`_ (2024-05-07)
 ======================
 
@@ -44,7 +60,7 @@ Fixed
 * Fixed scanning silently failing on Windows when Bluetooth is off. Fixes #1535.
 * Fixed using wrong value for ``tx_power`` in Android backend. Fixes #1532.
 * Fixed 4-character UUIDs not working on ``BleakClient.*_gatt_char`` methods. Fixes #1498.
-* Fixed race condition with getting max PDU size on Windows. Fixes #1497.
+* Fixed race condition with getting max PDU size on Windows. Fixes #1497. [REVERTED in v0.22.2]
 * Fixed filtering advertisement data by service UUID when multiple apps are scanning. Fixes #1534.
 
 `0.21.1`_ (2023-09-08)
@@ -1022,7 +1038,8 @@ Fixed
 * Bleak created.
 
 
-.. _Unreleased: https://github.com/hbldh/bleak/compare/v0.22.1...develop
+.. _Unreleased: https://github.com/hbldh/bleak/compare/v0.22.2...develop
+.. _0.22.2: https://github.com/hbldh/bleak/compare/v0.22.1...v0.22.2
 .. _0.22.1: https://github.com/hbldh/bleak/compare/v0.22.0...v0.22.1
 .. _0.22.0: https://github.com/hbldh/bleak/compare/v0.21.1...v0.22.0
 .. _0.21.1: https://github.com/hbldh/bleak/compare/v0.21.0...v0.21.1

bleak/backends/bluezdbus/characteristic.py

@@ -1,4 +1,4 @@
-from typing import List, Union
+from typing import Callable, List, Union
 from uuid import UUID
 
 from ..characteristic import BleakGATTCharacteristic
@@ -36,7 +36,7 @@ def __init__(
         object_path: str,
         service_uuid: str,
         service_handle: int,
-        max_write_without_response_size: int,
+        max_write_without_response_size: Callable[[], int],
     ):
         super(BleakGATTCharacteristicBlueZDBus, self).__init__(
             obj, max_write_without_response_size

bleak/backends/bluezdbus/manager.py

@@ -696,7 +696,7 @@ async def get_services(
                     service.handle,
                     # "MTU" property was added in BlueZ 5.62, otherwise fall
                     # back to minimum MTU according to Bluetooth spec.
-                    char_props.get("MTU", 23) - 3,
+                    lambda: char_props.get("MTU", 23) - 3,
                 )
 
                 services.add_characteristic(char)

bleak/backends/bluezdbus/scanner.py

@@ -237,14 +237,17 @@ def _handle_advertising_data(self, path: str, props: Device1) -> None:
             path: The D-Bus object path of the device.
             props: The D-Bus object properties of the device.
         """
+        _service_uuids = props.get("UUIDs", [])
+
+        if not self.is_allowed_uuid(_service_uuids):
+            return
 
         # Get all the information wanted to pack in the advertisement data
         _local_name = props.get("Name")
         _manufacturer_data = {
             k: bytes(v) for k, v in props.get("ManufacturerData", {}).items()
         }
         _service_data = {k: bytes(v) for k, v in props.get("ServiceData", {}).items()}
-        _service_uuids = props.get("UUIDs", [])
 
         # Get tx power data
         tx_power = props.get("TxPower")

bleak/backends/characteristic.py

@@ -7,7 +7,7 @@
 """
 import abc
 import enum
-from typing import Any, List, Union
+from typing import Any, Callable, List, Union
 from uuid import UUID
 
 from ..uuids import uuidstr_to_str
@@ -30,7 +30,7 @@ class GattCharacteristicsFlags(enum.Enum):
 class BleakGATTCharacteristic(abc.ABC):
     """Interface for the Bleak representation of a GATT Characteristic"""
 
-    def __init__(self, obj: Any, max_write_without_response_size: int):
+    def __init__(self, obj: Any, max_write_without_response_size: Callable[[], int]):
         """
         Args:
             obj:
@@ -86,12 +86,30 @@ def max_write_without_response_size(self) -> int:
         Gets the maximum size in bytes that can be used for the *data* argument
         of :meth:`BleakClient.write_gatt_char()` when ``response=False``.
 
+        In rare cases, a device may take a long time to update this value, so
+        reading this property may return the default value of ``20`` and reading
+        it again after a some time may return the expected higher value.
+
+        If you *really* need to wait for a higher value, you can do something
+        like this:
+
+        .. code-block:: python
+
+            async with asyncio.timeout(10):
+                while char.max_write_without_response_size == 20:
+                    await asyncio.sleep(0.5)
+
         .. warning:: Linux quirk: For BlueZ versions < 5.62, this property
             will always return ``20``.
 
         .. versionadded:: 0.16
         """
-        return self._max_write_without_response_size
+
+        # for backwards compatibility
+        if isinstance(self._max_write_without_response_size, int):
+            return self._max_write_without_response_size
+
+        return self._max_write_without_response_size()
 
     @property
     @abc.abstractmethod

bleak/backends/corebluetooth/characteristic.py

@@ -6,7 +6,7 @@
 """
 
 from enum import Enum
-from typing import Dict, List, Optional, Tuple, Union
+from typing import Callable, Dict, List, Optional, Tuple, Union
 
 from CoreBluetooth import CBCharacteristic
 
@@ -59,7 +59,9 @@ class CBCharacteristicProperties(Enum):
 class BleakGATTCharacteristicCoreBluetooth(BleakGATTCharacteristic):
     """GATT Characteristic implementation for the CoreBluetooth backend"""
 
-    def __init__(self, obj: CBCharacteristic, max_write_without_response_size: int):
+    def __init__(
+        self, obj: CBCharacteristic, max_write_without_response_size: Callable[[], int]
+    ):
         super().__init__(obj, max_write_without_response_size)
         self.__descriptors: List[BleakGATTDescriptorCoreBluetooth] = []
         # self.__props = obj.properties()

bleak/backends/corebluetooth/client.py

@@ -237,7 +237,7 @@ async def get_services(self, **kwargs) -> BleakGATTServiceCollection:
                 services.add_characteristic(
                     BleakGATTCharacteristicCoreBluetooth(
                         characteristic,
-                        self._peripheral.maximumWriteValueLengthForType_(
+                        lambda: self._peripheral.maximumWriteValueLengthForType_(
                             CBCharacteristicWriteWithoutResponse
                         ),
                     )

bleak/backends/corebluetooth/scanner.py

@@ -92,6 +92,13 @@ async def start(self) -> None:
 
         def callback(p: CBPeripheral, a: Dict[str, Any], r: int) -> None:
 
+            service_uuids = [
+                cb_uuid_to_str(u) for u in a.get("kCBAdvDataServiceUUIDs", [])
+            ]
+
+            if not self.is_allowed_uuid(service_uuids):
+                return
+
             # Process service data
             service_data_dict_raw = a.get("kCBAdvDataServiceData", {})
             service_data = {
@@ -108,10 +115,6 @@ def callback(p: CBPeripheral, a: Dict[str, Any], r: int) -> None:
                 manufacturer_value = bytes(manufacturer_binary_data[2:])
                 manufacturer_data[manufacturer_id] = manufacturer_value
 
-            service_uuids = [
-                cb_uuid_to_str(u) for u in a.get("kCBAdvDataServiceUUIDs", [])
-            ]
-
             # set tx_power data if available
             tx_power = a.get("kCBAdvDataTxPowerLevel")
 

bleak/backends/p4android/characteristic.py

@@ -1,4 +1,4 @@
-from typing import List, Union
+from typing import Callable, List, Union
 from uuid import UUID
 
 from ...exc import BleakError
@@ -15,7 +15,7 @@ def __init__(
         java,
         service_uuid: str,
         service_handle: int,
-        max_write_without_response_size: int,
+        max_write_without_response_size: Callable[[], int],
     ):
         super(BleakGATTCharacteristicP4Android, self).__init__(
             java, max_write_without_response_size

bleak/backends/p4android/client.py

@@ -273,7 +273,7 @@ async def get_services(self) -> BleakGATTServiceCollection:
                     java_characteristic,
                     service.uuid,
                     service.handle,
-                    self.__mtu - 3,
+                    lambda: self.__mtu - 3,
                 )
                 services.add_characteristic(characteristic)
 

bleak/backends/p4android/defs.py

@@ -5,6 +5,7 @@
 from jnius import autoclass, cast
 
 import bleak.exc
+from bleak.uuids import normalize_uuid_16
 
 # caching constants avoids unnecessary extra use of the jni-python interface, which can be slow
 
@@ -87,4 +88,4 @@ class ScanFailed(enum.IntEnum):
     BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE: "write-without-response",
 }
 
-CLIENT_CHARACTERISTIC_CONFIGURATION_UUID = "2902"
+CLIENT_CHARACTERISTIC_CONFIGURATION_UUID = normalize_uuid_16(0x2902)

bleak/backends/p4android/scanner.py

@@ -233,6 +233,9 @@ def _handle_scan_result(self, result) -> None:
         if service_uuids is not None:
             service_uuids = [service_uuid.toString() for service_uuid in service_uuids]
 
+        if not self.is_allowed_uuid(service_uuids):
+            return
+
         manufacturer_data = record.getManufacturerSpecificData()
         manufacturer_data = {
             manufacturer_data.keyAt(index): bytes(manufacturer_data.valueAt(index))

bleak/backends/scanner.py

@@ -197,32 +197,51 @@ def remove() -> None:
 
         return remove
 
-    def call_detection_callbacks(
-        self, device: BLEDevice, advertisement_data: AdvertisementData
-    ) -> None:
+    def is_allowed_uuid(self, service_uuids: Optional[List[str]]) -> bool:
         """
-        Calls all registered detection callbacks.
+        Check if the advertisement data contains any of the service UUIDs
+        matching the filter. If no filter is set, this will always return
+        ``True``.
 
-        Backend implementations should call this method when an advertisement
-        event is received from the OS.
-        """
+        Args:
+            service_uuids: The service UUIDs from the advertisement data.
 
+        Returns:
+            ``True`` if the advertisement data should be allowed or ``False``
+             if the advertisement data should be filtered out.
+        """
         # Backends will make best effort to filter out advertisements that
         # don't match the service UUIDs, but if other apps are scanning at the
         # same time or something like that, we may still receive advertisements
         # that don't match. So we need to do more filtering here to get the
         # expected behavior.
 
-        if self._service_uuids:
-            if not advertisement_data.service_uuids:
-                return
+        if not self._service_uuids:
+            # if there is no filter, everything is allowed
+            return True
+
+        if not service_uuids:
+            # if there is a filter the advertisement data doesn't contain any
+            # service UUIDs, filter it out
+            return False
 
-            for uuid in advertisement_data.service_uuids:
-                if uuid in self._service_uuids:
-                    break
-            else:
-                # if there were no matching service uuids, the don't call the callback
-                return
+        for uuid in service_uuids:
+            if uuid in self._service_uuids:
+                # match was found, keep this advertisement
+                return True
+
+        # there were no matching service uuids, filter this one out
+        return False
+
+    def call_detection_callbacks(
+        self, device: BLEDevice, advertisement_data: AdvertisementData
+    ) -> None:
+        """
+        Calls all registered detection callbacks.
+
+        Backend implementations should call this method when an advertisement
+        event is received from the OS.
+        """
 
         for callback in self._ad_callbacks.values():
             callback(device, advertisement_data)

bleak/backends/winrt/characteristic.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 import sys
-from typing import List, Union
+from typing import Callable, List, Union
 from uuid import UUID
 
 if sys.version_info >= (3, 12):
@@ -68,7 +68,11 @@
 class BleakGATTCharacteristicWinRT(BleakGATTCharacteristic):
     """GATT Characteristic implementation for the .NET backend, implemented with WinRT"""
 
-    def __init__(self, obj: GattCharacteristic, max_write_without_response_size: int):
+    def __init__(
+        self,
+        obj: GattCharacteristic,
+        max_write_without_response_size: Callable[[], int],
+    ):
         super().__init__(obj, max_write_without_response_size)
         self.__descriptors = []
         self.__props = [