[Feature Request] Intercepting hardcoded localhost WebSockets for HMR (.NET Hot Reload / dotnet watch)

该 payload 没有提到任何 code-server 文件或测试。首先跟踪浏览器上下文对出站 localhost WebSockets 的处理以及内置代理层，然后检查注入的 aspnetcore-browser-refresh.js 如何使用临时的 ws/wss 端口。完成后应当是一个纯浏览器的 dotnet watch 工作流，其中 Hot Reload 通过 code-server 连接，且不会出现 localhost 故障。

What is your suggestion?

Implement a client-side interceptor or dynamic proxy mechanism within code-server's browser context that can catch outbound WebSocket requests to localhost:<port> and seamlessly route them through code-server's built-in proxy layer back to the remote workspace.

Why do you want this feature?

Developers relying on code-server for a pure browser-based development experience cannot use .NET's Hot Reload (dotnet watch).

When running dotnet watch, the .NET SDK dynamically injects a script (aspnetcore-browser-refresh.js) into the DOM that attempts to establish an HMR WebSocket connection to a random, ephemeral port on localhost (e.g., ws://localhost:40777).

Because the browser executes this locally, it queries the user's physical machine rather than the remote code-server container. The connection drops, and Hot Reload fails:
Firefox can’t establish a connection to the server at ws://localhost:40777/

Firefox can’t establish a connection to the server at ws://localhost:43067/.     aspnetcore-browser-refresh.js:318:25
WebSocket failed to connect.     aspnetcore-browser-refresh.js:19:15
Firefox can’t establish a connection to the server at wss://localhost:33935/.     aspnetcore-browser-refresh.js:318:25
WebSocket failed to connect.     aspnetcore-browser-refresh.js:19:15
Unable to establish a connection to the browser refresh server.     aspnetcore-browser-refresh.js:23:13

Are there any workarounds to get this functionality today?

There are no workarounds for a pure browser workflow (e.g., coding on an iPad or a locked-down laptop without CLI access).

Are you interested in submitting a PR for this?

No, I do not have the familiarity with the code-server networking/proxy codebase to implement this reliably.