HTTP 304 even when ETag different with If-None-Match #29353

[suningkooboo]

Environment

• Operating System: Windows_NT
• Node Version: v18.17.1
• Nuxt Version: 3.8.2
• CLI Version: 3.10.0
• Nitro Version: 2.8.1
• Package Manager: [email protected]
• Builder: -
• User Config: ssr, experimental, runtimeConfig, modules, site, ui, colorMode, pwa, tailwindcss, i18n, viewport, imports, devtools, typescript, alias, routeRules, $production
• Runtime Modules: @nuxtjs/[email protected], @nuxt/[email protected], [email protected], [email protected], @nuxtjs/[email protected], [email protected], @nuxtjs/[email protected], [email protected], @nuxt/[email protected], @vueuse/[email protected], @vite-pwa/[email protected]
• Build Modules: -

Reproduction

I write minimal reproduction here:
https://stackblitz.com/edit/github-ajxlmh?file=server%2Froutes%2Findex.ts

I found it's hard to test directly on this minimal reproduction but it can indicate how bug work. Two files:

server/routes/index.ts to proxy to different output
nuxt.config.ts to enable SWR.

Describe the bug

I write a server middleware to proxyRequest to different page render for login (A) and guest (B) user in same URL. The login/guest status is judged by an auth cookie. I enable routeRules swr=true.

1. Visit home page on login status and get version A.
2. logout (delete cookie) and visit home page. Server will respond 304 even when response ETag (B) different with request If-None-Match (A).

Additional context

No response

Logs

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