Azure blob authorization header

Question

I am trying to use refit to upload to azure blob storage from a Xamarin iOS application. This is the interface configuration I am using for Refit:

[Headers("x-ms-blob-type: BlockBlob")]
[Put("/{fileName}")]
Task<bool> UploadAsync([Body]byte[] content, string sasTokenKey,
[Header("Content-Type")] string contentType);

Where the sasTokenKey parameter looks like this:

"/content-default/1635839001660743375-66f93195-e923-4c8b-a3f1-5f3f9ba9dd32.jpeg?sv=2015-04-05&sr=b&sig=Up26vDxQikFqo%2FDQjRB08YtmK418rZfKx1IHbYKAjIE%3D&se=2015-11-23T18:59:26Z&sp=w"

This is how I am using Refit to call the azure blob server:

var myRefitApi = RestService.For<IMyRefitAPI>("https://myaccount.blob.core.windows.net");
myRefitApi.UploadAsync(photoBytes, sasTokenKey, "image/jpeg"

However I am getting the follow error:

Response status code does not indicate success: 403 (Server failed to 
authenticate the request. Make sure the value of Authorization header is 
formed correctly including the signature.)

The SAS url is working fine if I call it directly like this

var content = new StreamContent(stream);
            content.Headers.Add("Content-Type", "jpeg");
            content.Headers.Add("x-ms-blob-type", "BlockBlob");
var task = HttpClient.PutAsync(new Uri(sasTokenUrl), content);
task.Wait();

So basically I am just trying to do the same thing using Refit. Any idea how to get Refit working with Azure Blob Storage?

Thanks!

[UPDATE] I am now able to upload the bytes to the azure blob server but something seems to be wrong with the byte data because I am not able to view the image. Here is the code I am using to convert to byte array.

byte[] bytes;
using (var ms = new MemoryStream())
{
   stream.Position = 0;
   stream.CopyTo(ms);
   ms.Position = 0;
   bytes = ms.ToArray();
}

[UPDATE] Got it fixed by using stream instead of byte array!

Answer 1

I see %2F and %3D and I'm curious if refit is encoding those a second time. Try sending the token without encoding it.