When fetching a Request object in middleware, the method is ignored

[ambrauer]

Verify canary release

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

Provide environment information

Operating System:
  Platform: win32
  Arch: x64
  Version: Windows 10 Enterprise
Binaries:
  Node: 16.14.0
  npm: N/A
  Yarn: N/A
  pnpm: N/A
Relevant packages:
  next: 12.1.7-canary.11
  react: 17.0.2
  react-dom: 17.0.2

What browser are you using? (if relevant)

n/a

How are you deploying your application? (if relevant)

next start

Describe the Bug

When fetching a Request object in middleware, the method is ignored:

const request = new Request('http://example.com', { method: 'POST', body: 'hello'})
const response = await fetch(request)

expect(response.req.method).toEqual('POST') // <-- return 'GET'

This is related to #36522 (case 2 here, which I believe was lost in the shuffle).

Expected Behavior

Specified 'method' should be used for the request

To Reproduce

A simple repro we have in a middleware.ts:

import { NextResponse } from 'next/server';

export default async function () {
  const ok = await fetch('https://httpbin.org/post', {
    method: 'POST',
    body: 'test',
  });
  console.log(ok); // <-- 200 OK

  const fails = await fetch(
    new Request('https://httpbin.org/post', {
      method: 'POST',
      body: 'test',
    })
  );
  console.log(fails); // <-- 405 METHOD NOT ALLOWED (GET is sent)

  return NextResponse.next();
}

[ijjk]

Hi, this should be fixed by #36539 which is available in v12.1.7-canary.19 of Next.js, please update and give it a try!

[ambrauer]

Hi @ijjk, thanks for the update although I'm still seeing the issue with 12.1.7-canary.19 (and I also tried 12.1.7-canary.23, latest canary I had trouble quickly setting up same repro). The mentioned fix only applies to request cloning. Seems like this issue should be re-opened?

[balazsorban44]

I believe this was reintroduced in #37024

[github-actions]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.