websockets: don't alter dictionary during iteration of "view"

Signed-off-by: Eric Callahan <arksine.code@gmail.com>
2020-08-04 10:17:05 -04:00 · 2020-08-04 10:17:05 -04:00 · e93e4521a4
parent 6c69dbdca9
commit e93e4521a4
1 changed files with 1 additions and 1 deletions
--- a/moonraker/websockets.py
+++ b/moonraker/websockets.py
@ -178,7 +178,7 @@ class WebsocketManager:
            'method': "notify_" + name,
            'params': [data]})
        async with self.ws_lock:
-            for ws in self.websockets.values():
+            for ws in list(self.websockets.values()):
                try:
                    ws.write_message(notification)
                except WebSocketClosedError: