# anyio.ClosedResourceError: 资源已关闭错误

- **ID:** `python/starlette-streaming-response-disconnect`
- **领域:** python
- **类别:** network_error
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

客户端在StreamingResponse仍在向ASGI发送通道写入时断开连接。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| 0.30.x | active | — | — |
| 0.36.x | active | — | — |

## 解决方案

1. **** (90% 成功率)
   ```
   async for chunk in gen():\n    if await request.is_disconnected():\n        break\n    yield chunk
   ```
2. **** (88% 成功率)
   ```
   try:\n    yield data\nexcept anyio.ClosedResourceError:\n    return
   ```

## 无效尝试

- **** — Does not prevent mid-stream client disconnects. (80% 失败率)
- **** — Channel is closed; further sends raise again. (85% 失败率)