Does NuGet support adding custom feeds through http(s) (using SAS tokens)

[Niharikadutta]

I had a very basic question about NuGet feeds and whether it is possible to add a custom feed (say Azure Storage account) through NuGet by using the http(s) URL of the storage account (and passing SAS token).
Just trying to compare with Conda custom channels and see if there is a parallel for NuGet.

[loic-sharma]

From my understanding, NuGet supports the following authenticated feed mechanisms:

1. HTTP authentication
2. Client certificate authentication

Unfortunately, Azure Storage authentication using SAS tokens is not supported. You will need to create a custom authentication plugin. See: https://docs.microsoft.com/en-us/nuget/reference/extensibility/nuget-cross-platform-authentication-plugin

[zivkan]

Something I've seen elsewhere, was a NuGet v3 json layout on some endpoint, using NuGet's authentication, but downloads are HTTP redirects to blob storage with a SAS token. This way the service doesn't need to be a reverse proxy to the blob storage. It's another idea.

[Niharikadutta]

Interesting, thanks for that idea! Would you happen to have an example I could look at somewhere?