[BUG] BlobSasBuilder does not accept "d" as value for "Resource"

Library name and version

Azure.Storage.Blobs

Describe the bug

The BlobSasBuilder ignores Resource set to “d”

Expected behavior

I want to create a sas token for a directory in a blob container using the BlobSasBuilder.

Actual behavior

Currently, when setting Resource to “d”, the resulting sr querystring parameters is still “c”. If i look at the github code of BlobSasBuilder, i see that i will never set the value to “d”.

The documentation does list “d” as a valid value: https://learn.microsoft.com/en-us/rest/api/storageservices/create-service-sas#specify-the-signed-resource-blob-storage-only

Reproduction Steps

Shortened code: ` BlobServiceClient client = new BlobServiceClient(“connection string”); var result = await client.CreateBlobContainerAsync(containername);

        BlobSasBuilder blobSasBuilder = new BlobSasBuilder(
            BlobContainerSasPermissions.Create,
            DateTimeOffset.UtcNow.AddHours(1))
        {
            BlobContainerName = containername,
            Resource = "d"
        };

        var storageSharedKeyCredential = new StorageSharedKeyCredential(
               "storageaccountname",
               "storageaccountkey"
           );

        var sasQueryParameters = blobSasBuilder.ToSasQueryParameters(storageSharedKeyCredential);

`

Environment

No response

[davyvanlaere]

Ok. I also noticed that signedDirectoryDepth, which is required if signedResource=“d”, is not included when constructing the signature string.

[SaurabhSharma-MSFT]

@davyvanlaere We are looking into it and get back to you for any additional information.