Enabling trailingSlash will hang the request in RSC

[huozhi]

Verify canary release

• I verified that the issue exists in Next.js canary release

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 21.1.0: Wed Oct 13 17:33:24 PDT 2021; root:xnu-8019.41.5~1/RELEASE_ARM64_T8101
Binaries:
  Node: 14.17.0
  npm: 8.1.4
  Yarn: 1.22.15
  pnpm: 6.11.0
Relevant packages:
  next: 12.1.0
  react: 18.0.0-rc.0
  react-dom: 18.0.0-rc.0

Done in 0.60s.

What browser are you using? (if relevant)

Chrome 98

How are you deploying your application? (if relevant)

local testing

Describe the Bug

Testing https://github.com/vercel/next-rsc-demo with trailingSlash config enabled, RSC pages requests are hanged in dev mode and returning 404 in prod mode (next build + start).

Related to vercel/next-react-server-components#22 . WebServer doens't respond correctly.

Expected Behavior

RSC pages should work like normal pages with trailingSlash enabled, appending slash to the pathname if necessary

To Reproduce

1. clone https://github.com/vercel/next-rsc-demo
2. add trailingSlash: true in next.config.js
3. run yarn dev
4. request localhost:3000/rsc

[github-actions]

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