PYTHON-5044 - Fix successive AsyncMongoClients on a single loop always ti… (#2065)

pymongo/network_layer.py

@@ -267,18 +267,25 @@ async def async_receive_data(
         else:
             read_task = create_task(_async_receive(sock, length, loop))  # type: ignore[arg-type]
         tasks = [read_task, cancellation_task]
-        done, pending = await asyncio.wait(
-            tasks, timeout=timeout, return_when=asyncio.FIRST_COMPLETED
-        )
-        for task in pending:
-            task.cancel()
-        if pending:
-            await asyncio.wait(pending)
-        if len(done) == 0:
-            raise socket.timeout("timed out")
-        if read_task in done:
-            return read_task.result()
-        raise _OperationCancelled("operation cancelled")
+        try:
+            done, pending = await asyncio.wait(
+                tasks, timeout=timeout, return_when=asyncio.FIRST_COMPLETED
+            )
+            for task in pending:
+                task.cancel()
+            if pending:
+                await asyncio.wait(pending)
+            if len(done) == 0:
+                raise socket.timeout("timed out")
+            if read_task in done:
+                return read_task.result()
+            raise _OperationCancelled("operation cancelled")
+        except asyncio.CancelledError:
+            for task in tasks:
+                task.cancel()
+            await asyncio.wait(tasks)
+            raise
+
     finally:
         sock.settimeout(sock_timeout)
 

pymongo/periodic_executor.py

@@ -78,14 +78,7 @@ class AsyncPeriodicExecutor:
 
     async def join(self, timeout: Optional[int] = None) -> None:
         if self._task is not None:
-            try:
-                await asyncio.wait_for(self._task, timeout=timeout)  # type-ignore: [arg-type]
-            except asyncio.TimeoutError:
-                # Task timed out
-                pass
-            except asyncio.exceptions.CancelledError:
-                # Task was already finished, or not yet started.
-                raise
+            await asyncio.wait([self._task], timeout=timeout)  # type-ignore: [arg-type]
 
     def wake(self) -> None:
         """Execute the target function soon."""

test/asynchronous/test_connections_survive_primary_stepdown_spec.py

@@ -22,7 +22,6 @@ sys.path[0:0] = [""]
 from test.asynchronous import (
     AsyncIntegrationTest,
     async_client_context,
-    reset_client_context,
     unittest,
 )
 from test.asynchronous.helpers import async_repl_set_step_down

test/test_connections_survive_primary_stepdown_spec.py

@@ -22,7 +22,6 @@ sys.path[0:0] = [""]
 from test import (
     IntegrationTest,
     client_context,
-    reset_client_context,
     unittest,
 )
 from test.helpers import repl_set_step_down