This would solve...

Node.js is currently developing WebSocket inspection support in DevTools, but at the moment it can only handle WebSocket open and close events.

Reference:
nodejs/node#59404

I’d like to request further support for the data needed by the DevTools inspector.

The implementation should look like...

1. undici:websocket:created

{ websocket, url }

Required for Network.webSocketCreated.
undici:websocket:open fires after the handshake, so we need an event that fires when the WebSocket object is created.

Spec:
https://chromedevtools.github.io/devtools-protocol/tot/Network/#event-webSocketCreated

2. undici:websocket:handshakeRequest

{ websocket }

Required forNetwork.requestWillBeSent.

We need a hook for the moment when the HTTP upgrade request is sent.

Spec:
https://chromedevtools.github.io/devtools-protocol/tot/Network/#event-requestWillBeSent

3. undici:websocket:frameSent undici:websocket:frameRecieved

{ websocket, opcode, mask, payloadData }

Required for:

• Network.webSocketFrameSent
• Network.webSocketFrameReceived

Spec:
https://chromedevtools.github.io/devtools-protocol/tot/Network/#event-webSocketFrameSent
https://chromedevtools.github.io/devtools-protocol/tot/Network/#event-webSocketFrameReceived
https://chromedevtools.github.io/devtools-protocol/tot/Network/#type-WebSocketFrame

4. WebSocket frame error event

Required for Network.webSocketFrameError.

Undici currently has socket_error,
but it does not indicate which WebSocket instance the error belongs to—unlike other WebSocket events.

I have also considered...

Additional context

I understand that some of these events may require consideration, but I’d appreciate it if you could start by supporting the ones that are feasible.