playground view not accessible in vscode webview

[pelikhan]

Running a codespace from a browser, the localhost server fails to connect.

[github-actions]

The issue you're experiencing with the playground view not being accessible in VSCode's WebView when running a Codespace from a browser suggests a potential cross-origin resource sharing (CORS) problem. Ensure that your localhost server is configured to allow requests from the domain where your VSCode instance is running, typically `localhost:8080` or a similar port used for development servers.

If you're using a simple HTTP server command like `python -m SimpleHTTPServer 8080`, it might be insufficient for more complex environments. Consider using something with CORS support, such as:

1. **Install `http-server`:**

npm install http-server -g

2. **Run the server with CORS enabled:**

http-server -p 8080 --cors

If you're facing further challenges, please provide details on your development environment and any error logs for more specific guidance.

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[pelikhan]

the websocket needs to connect to the externalurl created by VScode