Obtaining the device path from BlueZ instead of creating it by hand.

Hopefully fixes hbldh#150

CHANGELOG.rst

@@ -43,6 +43,8 @@ Changed
 * Using CBManagerState constants from pyobj instead of integers.
 * Improved handling of the txdbus connection to avoid hanging of disconnection
   clients in BlueZ backend. Fixes #216, #219 & #221.
+* #150 hints at the device path not being possible to create as is done in the `get_device_object_path` method.
+  Now, we try to get it from BlueZ first. Otherwise, use the old fallback.
 
 Removed
 ~~~~~~~

bleak/__version__.py

@@ -1,3 +1,3 @@
 # -*- coding: utf-8 -*-
 
-__version__ = "0.6.5a7"
+__version__ = "0.6.5a8"

bleak/backends/bluezdbus/client.py

@@ -108,14 +108,23 @@ async def connect(self, **kwargs) -> bool:
         timeout = kwargs.get("timeout", self._timeout)
         discovered = await discover(timeout=timeout, device=self.device, loop=self.loop)
 
+        # Issue 150 hints at the device path not being possible to create as
+        # is done in the `get_device_object_path` method. Try to get it from
+        # BlueZ instead.
+        # Otherwise, use the old fallback and hope for the best.
+        bluez_devices = list(filter(lambda d: d.address.lower() == self.address.lower(), discovered))
+        if bluez_devices:
+            self._device_path = bluez_devices[0].details["path"]
+        else:
+            # TODO: Better to always get path from BlueZ backend...
+            self._device_path = get_device_object_path(self.device, self.address)
+
         self._reactor = get_reactor(self.loop)
 
         # Create system bus
         self._bus = await txdbus_connect(self._reactor, busAddress="system").asFuture(
             self.loop
         )
-        # TODO: Build this device path differently. Need to get it from BlueZ backend for proper path...
-        self._device_path = get_device_object_path(self.device, self.address)
 
         def _services_resolved_callback(message):
             iface, changed, invalidated = message.body