python network_error ai_generated partial

h11._util.LocalProtocolError: 当 role=SERVER 且 state=SEND_RESPONSE 时无法处理 ConnectionClosed 事件

h11._util.LocalProtocolError: can't handle event type ConnectionClosed when role=SERVER and state=SEND_RESPONSE

ID: python/starlette-uvicorn-h11-incomplete-read

其他格式: JSON · Markdown 中文 · English
80%修复率
82%置信度
0证据数
2024-09-18首次发现

版本兼容性

版本状态引入弃用备注
0.29+ active — — —

根因分析

客户端在 uvicorn 完成响应发送前断开连接（如浏览器导航或超时），导致 h11 处于不一致状态。

English

The client disconnected before uvicorn finished sending the response (e.g., browser navigation or timeout), leaving h11 in an inconsistent state.

generic

解决方案

  1. 85% 成功率 
    pip install -U uvicorn h11
  2. 75% 成功率 
    uvicorn app:app --timeout-keep-alive 30

无效尝试

常见但无效的做法:

  1. 80% 失败

    The error occurs in the protocol layer below the ASGI app; middleware never sees it.

  2. 70% 失败

    The protocol behavior is correct; downgrading only changes the error text.