Sending a new signalling message peerLeft.

src/pipecat/transports/network/webrtc_connection.py

@@ -43,6 +43,8 @@ class TrackStatusMessage(BaseModel):
 class RenegotiateMessage(BaseModel):
     type: Literal["renegotiate"] = "renegotiate"
 
+class PeerLeftMessage(BaseModel):
+    type: Literal["peerLeft"] = "peerLeft"
 
 class SignallingMessage:
     Inbound = Union[TrackStatusMessage]  # in case we need to add new messages in the future
@@ -272,9 +274,9 @@ class SmallWebRTCConnection(BaseObject):
             logger.warning("Video transceiver not found. Cannot replace video track.")
 
     async def disconnect(self):
-        # TODO: we should trigger something to know we are leaving
-        # so the client does not try to reconnect
-        # Like participant left
+        self.send_app_message(
+            {"type": SIGNALLING_TYPE, "message": PeerLeftMessage().model_dump()}
+        )
         await self._close()
 
     async def _close(self):