Unable to start devbox VM behind corporate proxy

[Doogiemuc]

🐛 bug report

Preflight Checklist

• [X] I have read the Contributing Guidelines for this project.
• [X] I agree to follow the Code of Conduct that this project adheres to.
• [X] I have searched the issue tracker for an issue that matches the one I want to file, without success: => related, but no solution: https://github.com/codesandbox/codesandbox-client/issues/8074

Description of the problem

We are behind a corporate proxy. We cannot start any sandbox VM or devbox.

In our company all HTTP(S) traffic must go through that proxy. The proxy is configured correctly in the browser. We tested on several different browsers: Firefox, Chorme & Edge. Always the same result.

How has this issue affected you? What are you trying to accomplish?

Goal: Just start any codesandbox VM or devBox.

To Reproduce

1. https://codesandbox.io/dashboard/
2. Click on "Create" button
3. Choose "JavaScript"
4. Choose "Devbox"
5. Click "Create DevBox"

The browser starts and starts a VM, but then an error popup is shown: "The workbench failed to connect to the server (Error: WebSocket close with status code 1006)". First error message in browser console is:

websocket-factory.ts:57 WebSocket connection to 'wss://jpkfpt-50000.vscode.codesandbox.io/stable-dc96b837cf6bb4af9cd736aa3af08cf8279f7685?reconnectionToken=eb0cd615-3695-4e3a-ae87-602e9e885a60&reconnection=false&skipWebSocketFrames=false&preview_token=eyJhbGciXXXXXXXXXXXXXXX....XXXXX' failed

Link to sandbox: link

Your Environment

Software	Name/Version
Сodesandbox	newest, from web page
Browser	Google Chorm - Version 140.0.7339.208 (Official Build) (64-Bit), and also same issue in Firefox or Edge
Operating System	Windows 11