dotnet restore: Slow restore performance

With nuget.exe it was possible to set NUGET_CERT_REVOCATION_MODE to offline

https://docs.microsoft.com/en-us/nuget/reference/errors-and-warnings/nu3028#revocation-check-mode-481

This environment variable seems to not have an effect on dotnet restore.

Is there any possibility to turn off those revocation checks for dotnet restore.

As our CI is running in network with very limited network access, restoring NuGet dependencies is dramatically slowed down by this missing configuration possibility.

[dtivel]

Signed package verification was not enabled on Linux until .NET SDK 5., so revocation checks related to NuGet signed package verification cannot be the reason for slow performance under .NET Core SDK 3.1. NUGET_CERT_REVOCATION_MODE won’t have any effect under .NET Core SDK 3.1.

As a side note, NuGet signed package verification was temporarily disabled by default on Linux with .NET SDK 5.0.202.

If this is indeed a problem experienced with .NET Core SDK 3.1, then retitle/reword this issue as slow restore performance; signed package verification and revocation checks are unrelated.

[stefan-hartmann-lgs]

cheers => https://github.com/NuGet/Home/discussions/12028