Merge pull request #502 from google/gbg/extended-advertising-termination-reverse

support out of order advertising set termination / connection events

bumble/device.py

@@ -1856,6 +1856,7 @@ class Device(CompositeEventEmitter):
 
         # Extended advertising.
         self.extended_advertising_sets: Dict[int, AdvertisingSet] = {}
+        self.connecting_extended_advertising_sets: Dict[int, AdvertisingSet] = {}
 
         # Legacy advertising.
         # The advertising and scan response data, as well as the advertising interval
@@ -4009,14 +4010,28 @@ class Device(CompositeEventEmitter):
             )
             return
 
-        if not (connection := self.lookup_connection(connection_handle)):
-            logger.warning(f'no connection for handle 0x{connection_handle:04x}')
+        if connection := self.lookup_connection(connection_handle):
+            # We have already received the connection complete event.
+            self._complete_le_extended_advertising_connection(
+                connection, advertising_set
+            )
             return
 
+        # Associate the connection handle with the advertising set, the connection
+        # will complete later.
+        logger.debug(
+            f'the connection with handle {connection_handle:04X} will complete later'
+        )
+        self.connecting_extended_advertising_sets[connection_handle] = advertising_set
+
+    def _complete_le_extended_advertising_connection(
+        self, connection: Connection, advertising_set: AdvertisingSet
+    ) -> None:
         # Update the connection address.
         connection.self_address = (
             advertising_set.random_address
-            if advertising_set.advertising_parameters.own_address_type
+            if advertising_set.random_address is not None
+            and advertising_set.advertising_parameters.own_address_type
             in (OwnAddressType.RANDOM, OwnAddressType.RESOLVABLE_OR_RANDOM)
             else self.public_address
         )
@@ -4147,6 +4162,16 @@ class Device(CompositeEventEmitter):
         if role == HCI_CENTRAL_ROLE or not self.supports_le_extended_advertising:
             # We can emit now, we have all the info we need
             self._emit_le_connection(connection)
+            return
+
+        if role == HCI_PERIPHERAL_ROLE and self.supports_le_extended_advertising:
+            if advertising_set := self.connecting_extended_advertising_sets.pop(
+                connection_handle, None
+            ):
+                # We have already received the advertising set termination event.
+                self._complete_le_extended_advertising_connection(
+                    connection, advertising_set
+                )
 
     @host_event_handler
     def on_connection_failure(self, transport, peer_address, error_code):

bumble/host.py

@@ -787,6 +787,10 @@ class Host(AbortableEventEmitter):
         # Just use the same implementation as for the non-enhanced event for now
         self.on_hci_le_connection_complete_event(event)
 
+    def on_hci_le_enhanced_connection_complete_v2_event(self, event):
+        # Just use the same implementation as for the v1 event for now
+        self.on_hci_le_enhanced_connection_complete_event(event)
+
     def on_hci_connection_complete_event(self, event):
         if event.status == hci.HCI_SUCCESS:
             # Create/update the connection

tests/device_test.py

@@ -301,9 +301,7 @@ async def test_legacy_advertising_connection(own_address_type):
     else:
         assert device.lookup_connection(0x0001).self_address == device.random_address
 
-    # For unknown reason, read_phy() in on_connection() would be killed at the end of
-    # test, so we force scheduling here to avoid an warning.
-    await asyncio.sleep(0.0001)
+    await async_barrier()
 
 
 # -----------------------------------------------------------------------------
@@ -384,9 +382,41 @@ async def test_extended_advertising_connection(own_address_type):
     else:
         assert device.lookup_connection(0x0001).self_address == device.random_address
 
-    # For unknown reason, read_phy() in on_connection() would be killed at the end of
-    # test, so we force scheduling here to avoid an warning.
-    await asyncio.sleep(0.0001)
+    await async_barrier()
+
+
+# -----------------------------------------------------------------------------
+@pytest.mark.parametrize(
+    'own_address_type,',
+    (OwnAddressType.PUBLIC, OwnAddressType.RANDOM),
+)
+@pytest.mark.asyncio
+async def test_extended_advertising_connection_out_of_order(own_address_type):
+    device = Device(host=mock.AsyncMock(spec=Host))
+    peer_address = Address('F0:F1:F2:F3:F4:F5')
+    advertising_set = await device.create_advertising_set(
+        advertising_parameters=AdvertisingParameters(own_address_type=own_address_type)
+    )
+    device.on_advertising_set_termination(
+        HCI_SUCCESS,
+        advertising_set.advertising_handle,
+        0x0001,
+        0,
+    )
+    device.on_connection(
+        0x0001,
+        BT_LE_TRANSPORT,
+        peer_address,
+        BT_PERIPHERAL_ROLE,
+        ConnectionParameters(0, 0, 0),
+    )
+
+    if own_address_type == OwnAddressType.PUBLIC:
+        assert device.lookup_connection(0x0001).self_address == device.public_address
+    else:
+        assert device.lookup_connection(0x0001).self_address == device.random_address
+
+    await async_barrier()
 
 
 # -----------------------------------------------------------------------------