Error using WebSocket Helper for Cloudflare Workers

[ronkeiser]

What version of Hono are you using?

4.4.2

What runtime/platform is your app running on?

Cloudflare Workers

What steps can reproduce the bug?

Range Error

Employing the upgradeWebSocket helper produces an error and immediately returns a 500 response:

✘ [ERROR] RangeError: Responses with a WebSocket must have status code 101.

Minimal Example

Here is a minimal example using a snippet taken from the docs:

import { Hono } from 'hono'
import { upgradeWebSocket } from 'hono/cloudflare-workers'

const app = new Hono()

app.get(
	'/ws',
	upgradeWebSocket((c) => {
		return {
			onMessage(event, ws) {
				console.log(`Message from client: ${event.data}`)
				ws.send('Hello from server!')
			},
			onClose: () => {
				console.log('Connection closed')
			},
		}
	}),
)

export default app

Example Repo

I also created a repo with the example so that this can be easily reproduced:
https://github.com/ronkeiser/hono-ws-example

What is the expected behavior?

Requests to the /ws endpoint should be upgraded to a websocket.

What do you see instead?

Additional information

No response

[ronkeiser]

It seems all that needs to happen is that status: 101 needs to be added to the Response:

// src/adapter/cloudflare-workers/websocket.ts

...

return new Response(null, {
      status: 101,
      webSocket: client,
});

@yusukebe, I can create a PR to this effect if this is acceptable.

[ronkeiser]

I went ahead and made a PR here:

#2886

[pdlug]

@yusukebe any chance you could push a quick release with this fix? I have a project blocked on this issue.

[yusukebe]

@pdlug Yes sir!

[yusukebe]

Hi @ronkeiser @pdlug

I've released the new version v4.4.3 which includes the fix now. Try it!

[pdlug]

@yusukebe Working great now. Thanks so much!