After creating and launching the template project of Blazor Webassembly(7.0) in VS 2022, letting the Blazor app start in the browser, and then turning off the Blazor host server by closing the terminal, I navigated to FetchData and found the titled code still works without any problem until refreshing the browser.

在VS 2022中创建并启动Blazor WebAssembly(7.0)的模板项目，让Blazor应用程序在浏览器中启动，然后通过关闭终端关闭Blazor主机服务器后，我导航到FetchData，发现标题代码仍然可以正常工作，直到刷新浏览器。

Its code is as below:

其代码如下：

protected async Task FetchDataAsync()
{
   forecasts =  await Http.GetFromJsonAsync<WeatherForecast[]>("sample-data/weather.json");
}

It is getting the data from the host server thru Http so I expected it to fail.

它通过http从主机服务器获取数据，所以我预计它会失败。

Why is that possible?

为什么这是可能的？

I set Kestrel.

我给凯斯特尔下了套。