Only send pong if OPEN.

python-websockets · Jan 9, 2024 · e264d6a · e264d6a
1 parent 5209b2a
commit e264d6a
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/websockets/protocol.py b/src/websockets/protocol.py
@@ -630,8 +630,9 @@ def recv_frame(self, frame: Frame) -> None:
         elif frame.opcode is OP_PING:
             # 5.5.2. Ping: "Upon receipt of a Ping frame, an endpoint MUST
             # send a Pong frame in response"
-            pong_frame = Frame(OP_PONG, frame.data)
-            self.send_frame(pong_frame)
+            if self.state is OPEN:
+                pong_frame = Frame(OP_PONG, frame.data)
+                self.send_frame(pong_frame)
 
         elif frame.opcode is OP_PONG:
             # 5.5.3 Pong: "A response to an unsolicited Pong frame is not