Mono Wasm Debugger

Native debugging

It's possible to debug native code and managed code using the BrowserDebugProxy project.

Steps:

• Install C/C++ DevTools Support (DWARF) extension on chrome.
• Enable DWARF support: Open DevTools, click on the settings, click on experiments and enable WebAssembly Debugging: Enable DWARF support.

• Start the WebAssembly App Without Debugging from VS, or dotnet run on command line.
• Run chrome using this startup parameter: --remote-debugging-port=9222
• Go to your Blazor App Page
• Press Ctrl-Alt-D (windows) it will open the debugger page
• It will show something like this in the Address Bar: http://localhost:9222/devtools/inspector.html?ws=127.0.0.1:9300/devtools/page/97FCDA5A332CA3B72031790B26A264EF
• Open another tab and go to chrome://inspect

• Click on configure and add the port that was showed in the Address Bar: 127.0.0.1:9300

• After some seconds the tabs available to debug will appear

• Choose the WebAssembly Page and click on Inspect

• Open the Sources tab and click on file://
• You will see c# files and c files available to add breakpoints.