[Bug]: built-in extensions "simple-browser" not work

Is there an existing issue for this?

• I have searched the existing issues

OS/Web Information

• Web Browser: Chrome
• Local OS: macOS
• Remote OS: Ubuntu
• Remote Architecture: amd64
• code-server --version: 4.5.1

Steps to Reproduce

1. create kind cluster
2. deploy code-server with deployment

---
apiVersion: v1
kind: Service
metadata:
 name: code-server
 namespace: code-server
spec:
 ports:
 - port: 80
   targetPort: 8080
 selector:
   app: code-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: code-server
  name: code-server
  namespace: code-server
spec:
  selector:
    matchLabels:
      app: code-server
  replicas: 1
  template:
    metadata:
      labels:
        app: code-server
    spec:
      containers:
      - image: codercom/code-server:latest
        imagePullPolicy: Always
        name: code-server
        env:
        - name: PASSWORD
          value: "your_password"

1. port-forward code-server and access
2. clone https://github.com/cyclic-software/starter-nextjs.git repo
3. run yarn run dev, and use command+shift+p open sample browser
4. access 127.0.0.1:3000, and it show connection refuse

Expected

This plugin is built-in plugin, and can access nextjs app in sample browser.

Actual

Connection refuse.

Logs

[2022-08-03T08:19:08.250Z] info Wrote default config file to ~/.config/code-server/config.yaml [2022-08-03T08:19:08.462Z] info code-server 4.5.1 97d170331b51ee75c8e4bbdab23c755e3eeaaa8c [2022-08-03T08:19:08.462Z] info Using user-data-dir ~/.local/share/code-server [2022-08-03T08:19:08.471Z] info Using config file ~/.config/code-server/config.yaml [2022-08-03T08:19:08.471Z] info HTTP server listening on http://0.0.0.0:8080/ [2022-08-03T08:19:08.471Z] info - Authentication is enabled [2022-08-03T08:19:08.471Z] info - Using password from $PASSWORD [2022-08-03T08:19:08.471Z] info - Not serving HTTPS [08:19:56] Extension host agent started. [08:19:56] [127.0.0.1][6e69e306][ManagementConnection] Unknown reconnection token (never seen). [08:19:56] [127.0.0.1][6413cb24][ExtensionHostConnection] Unknown reconnection token (never seen). [08:19:58] [127.0.0.1][533e507c][ManagementConnection] New connection established. [08:19:58] [127.0.0.1][d5653c2d][ExtensionHostConnection] New connection established. [08:19:58] [127.0.0.1][d5653c2d][ExtensionHostConnection] <80> Launched Extension Host Process. [08:20:10] Using the in-memory credential store as the operating system’s credential store could not be accessed. Please see https://aka.ms/vscode-server-keyring on how to set this up. Details: Cannot find module ‘…/build/Release/keytar.node’ Require stack:

• /usr/lib/code-server/lib/vscode/node_modules/keytar/lib/keytar.js
• /usr/lib/code-server/lib/vscode/out/bootstrap-amd.js
• /usr/lib/code-server/out/node/util.js
• /usr/lib/code-server/out/node/cli.js
• /usr/lib/code-server/out/node/entry.js File not found: /usr/lib/code-server/lib/vscode/out/vs/workbench/contrib/webview/browser/pre/baidu.com File not found: /usr/lib/code-server/lib/vscode/node_modules/vscode-regexp-languagedetection/dist/index.js File not found: /usr/lib/code-server/lib/vscode/out/vs/workbench/contrib/webview/browser/pre/baidu.com File not found: /usr/lib/code-server/lib/vscode/node_modules/@vscode/vscode-languagedetection/dist/lib/index.js.map

Screenshot/Video

Does this issue happen in VS Code or GitHub Codespaces?

• I cannot reproduce this in VS Code.
• I cannot reproduce this in GitHub Codespaces.

Are you accessing code-server over HTTPS?

• I am using HTTPS.

Notes

I’m not using HTTPS!!! When I use curl access 127.0.0.1:3000, it works, but can’t access with sample browser. Here is same issues but close. #3495

[molszews]

I think the expectation here is that the port-forward is not needed as long as you are trying to browse using the Simple Browser, so the traffic originates from pod to code-server and then the browser just renders it.

[code-asher]

The issue says it cannot be reproduced in Codespaces but it reproduces for me. I ran python -m http.server and then opened the simple browser to http://127.0.0.1:8000.

The expectation makes sense to me but I believe the browser implementation is nothing more than an iframe so it will unfortunately resolve from your local machine.

To fix like @jsjoeio said I think you will need to forward port 3000. Or you could try opening the port through code-server’s proxy instead like with http://localhost:8080/proxy/3000/.

If the simple browser extension proxied itself that would be ideal though.