`req.getHeaders()` does not return values set using "rawHeaders" array

Version

v24.18.0

Platform

Darwin MBPM.local 25.5.0 Darwin Kernel Version 25.5.0: Tue Jun  9 22:28:29 PDT 2026; root:xnu-12377.121.10~1/RELEASE_ARM64_T6030 arm64

Subsystem

http

What steps will reproduce the bug?

Headers set using the message.rawHeaders format are not available on the request's getHeaders() method

import { get } from 'node:http'

const request = get(
  'http://localhost:3000',
  {
    headers: ['foo', 'bar', 'baz', 'qux']
  },
  (res) => {
    let data = ''

    res.on('data', (chunk) => {
      data += chunk
    })

    res.on('end', () => {
      console.log(data)
    })
  }
)

request.on('error', () => {})

console.log(request.getHeaders()) // [Object: null prototype] {}
console.log(request.getHeaderNames()) // []
console.log(request.getRawHeaderNames()) // []
console.log(request._header) // GET / HTTP/1.1\r\nfoo: bar\r\nbaz: qux\r\nConnection: keep-alive

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior? Why is that the expected behavior?

One would expect req.getHeaders() (and friends) to return a consistent value, whether an object or an array was passed as argument.

What do you see instead?

req.getHeaders() appears to be empty when request options are built using an array notation.

Additional information

No response

从 node:http 请求入口开始，跟踪在调用 getHeaders()、getHeaderNames() 和 getRawHeaderNames() 之前 options.headers 数组是如何存储的。重现该示例，然后验证这些方法报告的标头是否与对象形式的 options 一致，同时保留发出的请求标头。