Air-Gapped Roslyn Copilot break

[AlexBerryhill]

Environment data

dotnet --info output:
Version 9.0.101
VS Code version:
1.104
C# Extension version:
2.93.21

C# logs

C# output window contents:

[info] Installing C# Dependencies...

[info]
[info] Platform: win32, x86_64
[info]
[info] Downloading package 'Language server for Roslyn Copilot Integration'
[info] Failed at stage: downloadPackage
[info] Error: getaddrinfo EAI_AGAIN roslyn.blob.core.windows.net
[info]
[info] Locating .NET runtime version 9.0.1
[info] Dotnet path: C:\Program Files\dotnet\dotnet.exe
[info] Activating C# + C# Dev Kit
[error] Microsoft.CodeAnalysis.LanguageServer client: couldn't create a server. Error: Component DLL not found: c:\Users\name.vscode\

See this page for collecting more detailed logs

Steps to reproduce

• On an airgapped/offline machine

1. Download, .NET, .NET Install tool, charp extension, C# devkit
2. Configure local .NET path
3. Try to open an sln/solution

Expected behavior

To open the solution

Actual behavior

Fails to download RoslynCopilot, which I can not use anyway on an offline machine, then fails(see log)

Additional context

[info] Installing C# Dependencies...
[info]
[info] Platform: win32, x86_64
[info]
[info] Downloading package 'Language server for Roslyn Copilot Integration'
[info] Failed at stage: downloadPackage
[info] Error: getaddrinfo EAI_AGAIN roslyn.blob.core.windows.net
[info]
[info] Locating .NET runtime version 9.0.1
[info] Dotnet path: C:\Program Files\dotnet\dotnet.exe
[info] Activating C# + C# Dev Kit
[error] Microsoft.CodeAnalysis.LanguageServer client: couldn't create a server.
Error: Component DLL not found: c:\Users\name.vscode\

[AlexBerryhill]

More info on my stack overflow question https://stackoverflow.com/questions/79787476/c-sharp-dev-kit-on-an-air-gapped-network

[dibarbet]

We're planning on making this component optional, so extension activation will succeed without it. See also #8702

In the meantime there are two options

1. Install and launch the extension in a non-air-gapped environment, then copy the .roslynCopilot folder from the extension folder to the air-gapped install. You can find the extension folder by running the VSCode command Extensions: Open Extensions Folder and looking for the C# extension folder (e.g. ms-dotnettools.csharp-2.94.41-win32-x64).
2. Downgrade to an older version of the extension until we release a new version that makes the component optional.

Closing, will track making this optional in the issue above.