如何在iframe內部調試Blazor WASM？

Question

當 Blazor WASM 由 ASP.NET Core 托管並駐留在 iframe 內部時，調試器不起作用。 例如，我的 Page1 具有以下 html：

<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，它將 Page1 放入 iframe：

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

在這種情況下：

• 如果打開了 Page1，應用程序和調試器將按照檢查的方式工作。
• 如果打開 Page2，應用程序可以完美運行，但調試器不會：斷點不起作用。 Chromium 開發工具調試也不起作用並出現錯誤：

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",
   "type": "page",
   "url": "http://127.0.0.1:52977/?url=https%3A%2F%2Flocalhost%3A44329%2F",
   "webSocketDebuggerUrl": "ws://127.0.0.1:9222/devtools/page/DD0B85D174E30BF9E688213D52A312BD"
}, {
   "description": "",
   "devtoolsFrontendUrl": "/devtools/inspector.html?ws=127.0.0.1:9222/devtools/page/CD68FDE522F1DCDE6D3B49DF4872CE26",
   "faviconUrl": "https://localhost:44329/favicon.ico",
   "id": "CD68FDE522F1DCDE6D3B49DF4872CE26",
   "title": "BlazorApp",
   "type": "page",
   "url": "https://localhost:44329/Frame",
   "webSocketDebuggerUrl": "ws://127.0.0.1:9222/devtools/page/CD68FDE522F1DCDE6D3B49DF4872CE26"
}, {
   "description": "",
   "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"
} ]

具有最少重現代碼的存儲庫： https://github.com/GTmAster/blazor-iframe-debug

如何調試托管在 iframe 內部的 Blazor WASM？

Answer 1

我不太了解底層的東西，也不太了解 Microsoft/Blazor 團隊可能做了什么更改，但就目前而言，您不需要對 launchSettings.json 進行任何其他更改，在 Chrome 中，只需啟動您的blazor url，然后按 Shift+Cmd+D（在 Mac 中），將打開一個標簽頁，自動打開開發工具，在那里你可以找到你所有的 C# 組件/代碼進行調試。

享受。