---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/llm/openai_responses/exceptions/variables/E_OPENAI_RESPONSES_STREAM_STALLED.md
description: >-
  Thrown when the SSE stream goes silent for longer than `streamIdleTimeoutMs`.
  Non-fatal — surfaced via `ctx.nack(...)` with partial-state details so
  middleware can recover.
---

# Variable: E\_OPENAI\_RESPONSES\_STREAM\_STALLED

```ts
const E_OPENAI_RESPONSES_STREAM_STALLED: CreatedException<[number]>;
```

Defined in: [src/batteries/llm/openai\_responses/exceptions.ts:76](https://github.com/NHTIO/ADK/blob/v1.20260901.0/src/src/batteries/llm/openai_responses/exceptions.ts#L76)

Thrown when the SSE stream goes silent for longer than `streamIdleTimeoutMs`. Non-fatal —
surfaced via `ctx.nack(...)` with partial-state details so middleware can recover.