Proxy 404(http-proxy-middleware)

[Abbyzhoum]

Describe the bug

**Node.js version: ** 20.18.0

OS version: mccOS Sonoma 14.6

Description: use proxy, koa return 404

Actual behavior

use node --inspect， I know how the 404 error is returned.

Test the proxy service api is available.

fetch("http://11.91.254.50:8091/p/security/v2/login", {
  "headers": {
    "___internal-request-id": "80a3bca2-8d01-4915-aaee-f275a218a303",
    "accept": "*/*",
    "accept-language": "zh-CN,zh;q=0.9,en;q=0.8",
    "cache-control": "no-cache",
    "content-type": "application/json",
    "pragma": "no-cache"
  },
  "referrerPolicy": "no-referrer",
  "body": "{\"agentNo\":\"51230\",\"password\":\"Aa123456\",\"namespace\":\"lf.com\"}",
  "method": "POST",
  "mode": "cors",
  "credentials": "omit"
});

------------------response-----------------------
{
	"errorMessage":"GET方法不支持,支持的方法有:POST",
	"errorCode":405,
	"path":"/security/v2/security/login",
	"instanceId":"security-6cdbddb8fc-9nfv4",
	"exceptionName":"methodNotSupportedException"
}

Expected behavior

return real proxy codeStatus and response

Code to reproduce

import { createProxyMiddleware } from 'http-proxy-middleware'
import Koa from 'koa'
import json from 'koa-json'
import bodyparser from 'koa-bodyparser'
import { getEnv } from './env'

const app = new Koa()
app.use(bodyparser())
app.use(json())
const env = getEnv()

const proxyMiddleware = createProxyMiddleware({
  target: env.nginxAddress,   // proxy
  changeOrigin: true,
  logger: console,
  on:{
    'error':(err)=>{
      console.log(err)
    }
  }
});

app.use((ctx, next) => {
  ctx.set('Access-Control-Allow-Origin', '*')
  ctx.set('Access-Control-Allow-Headers', 'Content-Type, ssid')
  ctx.set('Access-Control-Allow-Methods', 'PUT, POST, GET, DELETE, OPTIONS')

  // console.log(`接口：${ctx.request.url}，方法：${ctx.request.method}`);

  if (ctx.method == 'OPTIONS') {
    ctx.body = 204
  } else {
    next()
  }
}).use((ctx, next) => {
  let path = ctx.request.url;
  if (path.startsWith('/p/security/v2/login')) {
      const body = ctx.request.body as { agentNo:string }
      const contain = env.agentRoster.split(',').includes(body.agentNo)

      if(env.agentRoster && contain){
        return next()
      }

      console.log(`${ctx.request.url} 走真实路径`)
      return proxyMiddleware(ctx.req, ctx.res, next); 
  }

  next()
})

setupGlobalRouter(app)

const server = app.listen(8080, () => console.log('Server is running on http://localhost:8080'))
server.on('upgrade', upgrade)

Checklist

• I have searched through GitHub issues for similar issues.
• I have completely read through the README and documentation.
• I have tested my code with the latest version of Node.js and this package and confirmed it is still not working.