[BUG] Blob Batch doesn't work with a SAS token

Describe the bug Failed to delete multiple blobs using the Blob Batch API. (This doesn’t work using the REST API as well)

Expected behavior Successfully deleting the requested blobs

Actual behavior (include Exception or Stack Trace) Exception:

Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.
RequestId:dc375805-401e-000a-4717-22235b000000
Time:2020-05-04T13:22:52.7605123Z
Status: 403 (Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.)
ErrorCode: AuthenticationFailed

Additional Information:
AuthenticationErrorDetail: Signature did not match. String to sign used was racwdl

2020-05-10T13:19:15Z
/blob/xxxxxxxxxxxx/$root
c147e641-9806-49d7-9768-3dd744dc1033
xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
2020-05-04T13:09:15Z
2020-05-10T13:19:15Z
b
2019-07-07


2019-07-07
c







Headers:
Server: Windows-Azure-Blob/1.0,Microsoft-HTTPAPI/2.0
x-ms-error-code: AuthenticationFailed
x-ms-request-id: dc375805-401e-000a-4717-22235b000000
x-ms-version: 2019-07-07
x-ms-client-request-id: 05d893ad-3666-4d87-83c1-8491a1bf6177
Date: Mon, 04 May 2020 13:22:51 GMT
Content-Length: 628
Content-Type: application/xml

To Reproduce

var service = new BlobServiceClient(new Uri(sasUrl));
var container = service.GetBlobContainerClient("sample-container");

// Create three blobs named "foo", "bar", and "baz"
var foo = container.GetBlobClient("shared/db1/foo");
var bar = container.GetBlobClient("shared/db1/bar");
var baz = container.GetBlobClient("shared/db1/baz");

await foo.UploadAsync(new MemoryStream(Encoding.UTF8.GetBytes("Foo!")));
await bar.UploadAsync(new MemoryStream(Encoding.UTF8.GetBytes("Bar!")));
await baz.UploadAsync(new MemoryStream(Encoding.UTF8.GetBytes("Baz!")));

// Delete all three blobs at once
var batch = service.GetBlobBatchClient();
await batch.DeleteBlobsAsync(new Uri[] { foo.Uri, bar.Uri, baz.Uri });

Environment:

• Azure.Storage.Blobs.Batch 12.2.1
• Windows 10, .NET Core 3.1
• Visual Studio 2019 16.5.4

[seanmcc-msft]

I don’t think it will. I have a PR in an internal repro updating https://docs.microsoft.com/en-us/rest/api/storageservices/blob-batch to mention that only Account SAS is supported.

[grisha-kotler]

Will it be supported in the future? If not, can this be added in your docs (https://docs.microsoft.com/en-us/rest/api/storageservices/blob-batch)?