如何在iframe中调试Blazor WASM？

问题描述

当Blazor WASM由ASP.NET Core托管并驻留在iframe中时，调试器将无法工作。例如，我有以下HTML的Page1：

<app>Loading...</app>
<div id="blazor-error-ui">
    An unhandled error has occurred.
    <a href="" class="reload">Reload</a>
    <a class="dismiss">?</a>
</div>
<script src="_framework/blazor.webassembly.js"></script>

和Page2，这会将Page1放入iframe：

<iframe src="/Page1" width="800" height="600">
</iframe>

在这种情况下：

如果打开了Page1应用程序并且调试器按检查正常工作。
如果打开Page2，则应用程序运行正常，但调试器无法运行：断点不起作用。 Chromium开发工具的调试也无法正常工作，并显示以下错误：

No inspectable pages found
The list of targets returned by http://127.0.0.1:9222/json contains no entries matching the URL https://localhost:44329/.
Make sure your browser is displaying the target application.

http://127.0.0.1:9222/json：

[ {
   "description": "","devtoolsFrontendUrl": "/devtools/inspector.html?ws=127.0.0.1:9222/devtools/page/8B7C4E90151A1A8A3F9D2D8FD93130D6","id": "8B7C4E90151A1A8A3F9D2D8FD93130D6","title": "New Tab","type": "page","url": "http://127.0.0.1:9222/json","webSocketDebuggerUrl": "ws://127.0.0.1:9222/devtools/page/8B7C4E90151A1A8A3F9D2D8FD93130D6"
},{
   "description": "","devtoolsFrontendUrl": "/devtools/inspector.html?ws=127.0.0.1:9222/devtools/page/DD0B85D174E30BF9E688213D52A312BD","id": "DD0B85D174E30BF9E688213D52A312BD","title": "127.0.0.1:52977/?url=https%3A%2F%2Flocalhost%3A44329%2F","url": "http://127.0.0.1:52977/?url=https%3A%2F%2Flocalhost%3A44329%2F","webSocketDebuggerUrl": "ws://127.0.0.1:9222/devtools/page/DD0B85D174E30BF9E688213D52A312BD"
},"devtoolsFrontendUrl": "/devtools/inspector.html?ws=127.0.0.1:9222/devtools/page/CD68FDE522F1DCDE6D3B49DF4872CE26","faviconUrl": "https://localhost:44329/favicon.ico","id": "CD68FDE522F1DCDE6D3B49DF4872CE26","title": "BlazorApp","url": "https://localhost:44329/Frame","webSocketDebuggerUrl": "ws://127.0.0.1:9222/devtools/page/CD68FDE522F1DCDE6D3B49DF4872CE26"
},"devtoolsFrontendUrl": "/devtools/inspector.html?ws=127.0.0.1:9222/devtools/page/6D57386F9C6D65737DF416657993C190","id": "6D57386F9C6D65737DF416657993C190","title": "McAfee DLP Endpoint Chrome Extension","type": "background_page","url": "chrome-extension://hddjhjcbioambdhjejhdlobijkdnbggp/_generated_background_page.html","webSocketDebuggerUrl": "ws://127.0.0.1:9222/devtools/page/6D57386F9C6D65737DF416657993C190"
} ]

具有最少代码可复制的存储库：https://github.com/GTmAster/blazor-iframe-debug

如何调试iframe中托管的Blazor WASM？

解决方法

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asp.net-core blazor c#c#debugging debugging debugging webassembly webassembly