[BUG] BlobUriBuilder URL encodes slashes in blob names

Describe the bug When working with blobs with slashes in the name the slashes get URL encoded by BlobUriBuilder which makes the URLs parse incorrectly later when trying to extract path segments.

Expected behavior Slashes should not be encoded by BlobUriBuilder.

var container = blobClient.GetBlobContainerClient("animals");
var blob = container.GetBlobClient("mammals/cat.png");
var blobUri = blob.Uri;

blobUri == "https://storageaccount.blob.core.windows.net/animals/mammals/cat.png"

Actual behavior (include Exception or Stack Trace) Slashes are encoded by BlobUriBuilder

blobUri == "https://storageaccount.blob.core.windows.net/animals/mammals%2fcat.png"

To Reproduce See expected behavior.

Environment:

• Name and version of the Library package used: <PackageReference Include="Azure.Storage.Blobs" Version="12.6.0" />
• Hosting platform or OS and .NET runtime version (dotnet --info output for .NET Core projects): Windows 10 .NET Core App
• IDE and version : Visual Studio 16.8.0 preview 2

[seanmcc-msft]

This is by design, the service considers mammals/cat.png and mammals%2fcat.png to be the same blob. I recommend using the Name property instead of Uri if you would like to later extract path segments.

[kasobol-msft]

@mgroetan The change is intentional and was part of larger internal refactoring. Service doesn’t distinguish / from %2f but considering multiple asks to not encode / we decided to change it. As @seanmcc-msft mentioned we recommend to use BlobName rather than Uri for parsing purposes.