🐛 Bug Report — Runtime APIs: Get an incorrect Location param when using Response.redirect

[h11g]

When I use wrangler dev --host localhost:3343 for local development, I want to get a redirect response. But my port number was mishandled and I can’t get the redirect address I’m hoping for. I'm sure it's not the browser's behavior.

wrangler version: ^3.32.0

Example

[mrbbot]

Hey! 👋 Thanks for raising this. I'm able to reproduce it locally. This is very likely an issue with wrangler/miniflare so I'm going to transfer this to the workers-sdk repo. 👍

[jfnault-seedbox]

Im experimenting the same issue

From what I found, seem to have been introduced in
#4950

packages/wrangler/templates/startDevWorker/ProxyWorker.ts
function rewriteUrlRelatedHeaders(headers: Headers, from: URL, to: URL) { headers.forEach((value, key) => { if (typeof value === "string" && value.includes(from.host)) { headers.set( key, value.replaceAll(from.origin, to.origin).replaceAll(from.host, to.host) ); } }); }

I start the worker like this:
npx wrangler dev --env dev --assets assets --host devsite.localg --local-upstream devsite.localg:33667

devsite.localg:33667: is my origin, a node express server

--host devsite.localg: I access my worker from same domain devsite.localg:8787

Behavior:
Url: devsite.localg:8787/to-redirect

with the script above is converted to:
http://devsite.localg:8787:8787:8787/destination

this is because of:
value.replaceAll(from.origin, to.origin).replaceAll(from.host, to.host)

there is the value I have for (from , to)

{
'from.origin': 'http://devsite.localg',
'to.origin': 'devsite.localg:8787',
'from.host': 'devsite.localg',
'to.host': 'devsite.localg:8787'
}

"http://devsite.localg:8787/destination"
.replaceAll("devsite.localg", "devsite.localg:8787")
.replaceAll("devsite.localg", "devsite.localg:8787")