fix: hold a strong reference to the AsyncEngine setup task

bdraco · bdraco · commit a0d26af40b78 · 2025-02-17T22:22:34.000-06:00
diff --git a/src/zeroconf/_engine.py b/src/zeroconf/_engine.py
@@ -91,7 +91,8 @@ async def _async_setup(self, loop_thread_ready: threading.Event | None) -> None:
         self._async_schedule_next_cache_cleanup()
         await self._async_create_endpoints()
         assert self.running_future is not None
-        self.running_future.set_result(True)
+        if not self.running_future.done():
+            self.running_future.set_result(True)
         if loop_thread_ready:
             loop_thread_ready.set()
 
