Race Condition: Incorrect AbortController Status Check During Tab Visibility Changes
评估
- 难度
- 3/5
- 预计耗时
- 1-2 天
- 新手友好度
- 25/100
- Issue 类型
- 缺陷
- 描述清晰度
- 描述清楚
- 活跃度
- 停滞
- 技术栈
- typescript
- 领域
- frontend
调研方向
首先在 TypeScript 源代码中搜索 curRequestController 和 openWhenHidden 的可见性处理逻辑。跟踪请求错误回调，并确认它保留了启动该请求的控制器；重现快速切换标签页的情况，并确认被中止的请求不会触发不必要的重试。
由索引模型根据 Issue 内容生成。
描述
Title: Race Condition: Incorrect AbortController Status Check During Tab Visibility Changes
Description
Bug Report
When rapidly switching browser tabs with openWhenHidden: false, the error handling logic incorrectly checks the abort status of a new request instead of the aborted one, leading to unnecessary retries.
Steps to Reproduce
- Create an EventSource connection with
openWhenHidden: false - Quickly switch to another tab and back
- Observe the network requests in DevTools
Current Behavior
- Initial request (A) starts with AbortController instance A
- Tab becomes hidden -> Controller A's abort() is called
- Tab becomes visible -> New request (B) starts with Controller B
- Request A's error handler executes but checks Controller B's status
- Since Controller B is not aborted, it triggers unnecessary retry
Expected Behavior
The error handler should check the abort status of the controller that initiated the request, not the current global controller instance.
Technical Details
The issue occurs because:
curRequestControlleris shared across async contexts- Error handling happens asynchronously after the controller reference has changed
- This leads to checking the wrong controller's abort status
Impact
- Unnecessary network requests
- Incorrect error handling
- Potential performance issues with rapid tab switching
Environment
- Browser: All major browsers
- Package Version: v2.0.1 (Latest version)
- OS: All platforms
Suggested Fix
Store the AbortController instance in function scope to ensure error handling uses the correct instance for status checking.
Pull Request
- 主要语言
- TypeScript
- 星标
- 2.9k
- 派生
- 197
- PR 合并指标
- 30 天内没有已合并 PR
环境准备
- 没有 Dockerfile 或 Docker Compose 文件
- 没有 Pull Request 模板
- 阅读贡献指南
从这里开始
- 先读完整个 Issue，再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库，在一个分支上完成修改。
- 提交 Pull Request，并在描述里引用这个 Issue 编号。
Azure/fetch-event-source 的其他 Issue
-
难度 3/5 1-2 天 新手友好度 28/100
Azure/fetch-event-source#102 ·
-
难度 3/5 1-2 天 新手友好度 25/100
Azure/fetch-event-source#101 · 3 条评论 ·
-
When aborting the event source using abort controller, no callbacks (onError / onClose) are fired未关闭
难度 3/5 1-2 天 新手友好度 48/100
Azure/fetch-event-source#100 · 1 条评论 · 5 个 reaction ·
-
难度 4/5 3-5 天 新手友好度 35/100
Azure/fetch-event-source#99 ·
-
难度 3/5 1-2 天 新手友好度 35/100
Azure/fetch-event-source#98 · 9 个 reaction ·
查看 Azure/fetch-event-source 的全部 Issue
相似的 Issue
-
ready-for-agent
难度 2/5 1-3 小时 新手友好度 68/100
xavxyz/bei-shan-lin-shui#57 ·
维护者通常 1 天内回复
-
[BUG] rag: sentence content can cross the reported sentence boundaries可能已有人在做 @LJK-ikun 今天认领。 未关闭bug
难度 2/5 1-3 小时 新手友好度 75/100
维护者通常 1 天内回复
-
bug needs-triage
难度 2/5 1-3 小时 新手友好度 70/100
维护者通常 1 天内回复
-
README: the Resource URI Schemas example's file://documents/* pattern only matches that literal URI未关闭
难度 1/5 1 小时以内 新手友好度 88/100
platformatic/mcp#361 ·
维护者通常 1 天内回复
-
难度 2/5 1-3 小时 新手友好度 65/100
siyuan-note/siyuan#20799 · 7 条评论 ·
维护者通常 1 天内回复