When uploading Photo to Web API always 0 bytes - windows-phone-8

Question

I have the following, and it uploads without errors, but the image is always 0 bytes.
Windows Phone App (this is called after selecting or taking a photo):
private void AddImage(PhotoResult e)
{
if (e.TaskResult == TaskResult.OK)
{
string serviceUri = Globals.GreedURL + #"API/UploadPhoto/test5.jpg";
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(serviceUri);
request.Method = "POST";
request.BeginGetRequestStream(result =>
{
Stream requestStream = request.EndGetRequestStream(result);
e.ChosenPhoto.CopyTo(requestStream);
requestStream.Close();
request.BeginGetResponse(result2 =>
{
try
{
HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(result2);
if (response.StatusCode == HttpStatusCode.Created)
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show("Upload completed.");
});
}
else
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show("An error occured during uploading. Please try again later.");
});
}
}
catch
{
this.Dispatcher.BeginInvoke(() =>
{
MessageBox.Show("An error occured during uploading. Please try again later.");
});
}
e.ChosenPhoto.Close();
}, null);
}, null);
}
And here is the Web API:
public class UploadPhotoController : ApiController
{
public HttpResponseMessage Post([FromUri]string filename)
{
var task = this.Request.Content.ReadAsStreamAsync();
task.Wait();
Stream requestStream = task.Result;
// Retrieve storage account from connection string.
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(ConfigurationManager.ConnectionStrings["StorageConnectionString"].ConnectionString);
// Create the blob client.
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
// Retrieve reference to a previously created container.
CloudBlobContainer container = blobClient.GetContainerReference("profilepics");
container.CreateIfNotExists();
var permissions = container.GetPermissions();
permissions.PublicAccess = BlobContainerPublicAccessType.Blob;
container.SetPermissions(permissions);
string uniqueBlobName = string.Format("test.jpg");
CloudBlockBlob blob = container.GetBlockBlobReference(uniqueBlobName);
blob.Properties.ContentType = "image\\jpeg";
blob.UploadFromStream(task.Result);
HttpResponseMessage response = new HttpResponseMessage();
response.StatusCode = HttpStatusCode.Created;
return response;
}
}
Any ideas?
Any help would be appreciated.