hyper-express: Multiple Middleware on Route Hangs

Hey @kartikk221!

I rolled out my new micro services backed by hyper-express and our recent changes and I noticed a bug. I’m trying to track it down, but I might need to tag you in as you are more familiar with this change.

When you define middleware on a specific route, it seems like every other request hangs and eventually fails. Here is a quick and easy reproduction. We should add this to the tests.

import { 
  Server,
  type Request,
  type Response,
  type MiddlewareNext
} from 'hyper-express'

const app = new Server()

app.post(
  '/echo',
  async (req: Request, res: Response, next: MiddlewareNext) => {
    req.body = await req.json()
    next()
  },
 (req: Request, res: Response, next: MiddlewareNext) => {
    res.locals.data = req.body
    next()
  },
 (req: Request, res: Response) => {
    res.status(200).json(res.locals.data)
  }
)

app.listen(3000)

Then if you use Postman to POST to localhost:3000/echo with a request body:

{ "foo": "bar" }

Every other request hangs. Oddly this doesn’t happen when you curl which leads me to believe that the socket isn’t being closed on the server side.

Any insight?