From babca4374da12f4501a6e639e3f67afa0e6a30dc Mon Sep 17 00:00:00 2001
From: DevilXD <bartosz.peszek@gmail.com>
Date: Mon, 14 Feb 2022 22:47:22 +0100
Subject: [PATCH] Move the topics changed flag clear to the top; to avoid a
 possible race condition with multiple adds and removals at the same time

---
 websocket.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/websocket.py b/websocket.py
index 73d3893..56af13c 100644
--- a/websocket.py
+++ b/websocket.py
@@ -173,6 +173,7 @@ class Websocket:
         if not self._topics_changed.is_set():
             # nothing to do
             return
+        self._topics_changed.clear()
         current: Set[WebsocketTopic] = set(self.topics.values())
         # handle removed topics
         removed = self._submitted.difference(current)
@@ -204,7 +205,6 @@ class Websocket:
                 }
             )
             self._submitted.update(added)
-        self._topics_changed.clear()
 
     async def _gather_recv(self, messages: List[JsonType]):
         """