diff --git a/litellm/litellm_core_utils/realtime_streaming.py b/litellm/litellm_core_utils/realtime_streaming.py index 530391c7b57..bb7fbd81146 100644 --- a/litellm/litellm_core_utils/realtime_streaming.py +++ b/litellm/litellm_core_utils/realtime_streaming.py @@ -1297,13 +1297,22 @@ class RealTimeStreaming: item["content"] = new_content return item + async def _receive_client_message(self) -> str | None: + try: + return await self.websocket.receive_text() + except Exception as e: # noqa: BLE001 # whatever the client socket raises, the client is gone + verbose_logger.debug("Client disconnected: %s", e) + return None + async def client_ack_messages(self) -> ClientLoopExit: import websockets client_event: _ClientEventFrame try: while True: - message = await self.websocket.receive_text() + message = await self._receive_client_message() + if message is None: + return ClientLoopExit.CLIENT_DISCONNECTED ## GUARDRAIL: intercept conversation.item.create for text-based injection. guardrail_turn_detection_injected = False diff --git a/tests/test_litellm/litellm_core_utils/test_realtime_streaming.py b/tests/test_litellm/litellm_core_utils/test_realtime_streaming.py index 41b7557f6b2..00addb613c2 100644 --- a/tests/test_litellm/litellm_core_utils/test_realtime_streaming.py +++ b/tests/test_litellm/litellm_core_utils/test_realtime_streaming.py @@ -3307,3 +3307,18 @@ async def test_client_hanging_up_first_ends_the_session_without_a_relayed_close( assert session.logging.logged_sessions == ((),) assert session.logging.logged_failures == () client_ws.close.assert_not_awaited() + + +@pytest.mark.asyncio +async def test_client_hanging_up_with_a_websockets_close_is_not_mistaken_for_the_backend_closing(): + client_ws: Final = _client_ws_that_never_sends() + client_ws.receive_text = AsyncMock(side_effect=ConnectionClosed(None, None)) + backend_ws: Final = MagicMock() + backend_ws.recv = AsyncMock(side_effect=_wait_forever) + session: Final = _relay_session(client_ws, backend_ws) + + await session.run() + + assert session.logging.logged_sessions == ((),) + assert session.logging.logged_failures == () + client_ws.close.assert_not_awaited()