aspnetcore: Unable to debug Blazor from Vscode

Is there an existing issue for this?

https://github.com/OmniSharp/omnisharp-vscode/issues/3819

Describe the bug

On macOs and Windows debugging doesn’t work on a new Blazor project in vscode. The browser will load and get stuck on about:blank for a few seconds and then close with this message: Unable to launch browser: "Could not open wss://localhost:5001/_framework/debug/ws-proxy?browser=ws%3A%2F%2F127.0.0.1%3A54817%2Fdevtools%2Fbrowser%2Fa4ad1522-b732-435d-abfa-1b542322d11c"

Expected Behavior

Loading the Blazor app and start debugging

Steps To Reproduce

• Using dotnet 6.0 or 7.0
• Create a new Blazor app with dotnet new blazorwasm -o debugblazor
• Open it with Vscode
• Click on Yes for Required assets to build and debug are missing from 'debugblazor'. Add them?
• Hit F5
• Browser will get stuck on about:blank for a few seconds
• Browser will close and message appear: Unable to launch browser: "Could not open wss://localhost:5001/_framework/debug/ws-proxy?browser=ws%3A%2F%2F127.0.0.1%3A54817%2Fdevtools%2Fbrowser%2Fa4ad1522-b732-435d-abfa-1b542322d11c"

Exceptions (if any)

Unable to launch browser: "Could not open wss://localhost:5001/_framework/debug/ws-proxy?browser=ws%3A%2F%2F127.0.0.1%3A54817%2Fdevtools%2Fbrowser%2Fa4ad1522-b732-435d-abfa-1b542322d11c"

.NET Version

7.0.102

Anything else?

.NET SDK: Version: 7.0.102 Commit: 4bbdd14480

Runtime Environment: OS Name: Mac OS X OS Version: 11.6 OS Platform: Darwin RID: osx.11.0-x64 Base Path: /usr/local/share/dotnet/sdk/7.0.102/

Host: Version: 7.0.2 Architecture: x64 Commit: d037e070eb

.NET SDKs installed: 3.1.415 [/usr/local/share/dotnet/sdk] 3.1.416 [/usr/local/share/dotnet/sdk] 3.1.419 [/usr/local/share/dotnet/sdk] 3.1.420 [/usr/local/share/dotnet/sdk] 3.1.421 [/usr/local/share/dotnet/sdk] 3.1.422 [/usr/local/share/dotnet/sdk] 3.1.424 [/usr/local/share/dotnet/sdk] 3.1.425 [/usr/local/share/dotnet/sdk] 3.1.426 [/usr/local/share/dotnet/sdk] 6.0.100 [/usr/local/share/dotnet/sdk] 6.0.101 [/usr/local/share/dotnet/sdk] 6.0.202 [/usr/local/share/dotnet/sdk] 6.0.300 [/usr/local/share/dotnet/sdk] 6.0.301 [/usr/local/share/dotnet/sdk] 6.0.400-preview.22330.6 [/usr/local/share/dotnet/sdk] 6.0.400 [/usr/local/share/dotnet/sdk] 6.0.402 [/usr/local/share/dotnet/sdk] 6.0.403 [/usr/local/share/dotnet/sdk] 6.0.404 [/usr/local/share/dotnet/sdk] 6.0.405 [/usr/local/share/dotnet/sdk] 7.0.100 [/usr/local/share/dotnet/sdk] 7.0.101 [/usr/local/share/dotnet/sdk] 7.0.102 [/usr/local/share/dotnet/sdk]

.NET runtimes installed: Microsoft.AspNetCore.App 3.1.21 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.22 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.25 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.26 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.27 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.28 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.30 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.31 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.32 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.5 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.6 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.8 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.10 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.11 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.12 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 6.0.13 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 7.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 7.0.1 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 7.0.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 3.1.21 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.22 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.25 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.26 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.27 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.28 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.30 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.31 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.32 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.6 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.8 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.10 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.11 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.12 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 6.0.13 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 7.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 7.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 7.0.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found: None

Environment variables: Not set

global.json file: Not found