Uploading blob to azure - http header not in correct format - rest

Question

I am trying to upload videos to azure media server via rest api. I have reach the step of uploading the video however I am getting an error. I use the following code to upload the video.
var client = new HttpClient();
client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", "Bearer " + token);
client.DefaultRequestHeaders.Add("x-ms-version", "2.8");
client.DefaultRequestHeaders.Add("x-ms-date", "2015-02-5");
client.DefaultRequestHeaders.Add("DataServiceVersion", "3.0");
client.DefaultRequestHeaders.Add("MaxDataServiceVersion", "3.0");
client.DefaultRequestHeaders.Add("x-ms-blob-type", "BlockBlob");
var formcontent = new MultipartFormDataContent();
FileStream stream = File.OpenRead(#"C:\AzureMediaUploadTest\MediaUploadTest\VideoFiles\tom.mp4");
byte[] fileBytes = new byte[stream.Length];
stream.Read(fileBytes, 0, fileBytes.Length);
stream.Close();
var streamcontent = new StreamContent(new MemoryStream(fileBytes));
formcontent.Add(streamcontent);
formcontent.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
result = await client.PutAsync(uploadurl, formcontent);
However the result gives a 400 - A http header is not in the correct format. Iam not sure which header is refered too or am I missing something.
Any help is appreciated.
UPDATE: I have marked the question as answered however I am now having issues with the authentication header - the new issue is asked here - Uploading blob to azure - Create authentication header

Answer 1

According to this documentation here:
All authenticated requests must include the Coordinated Universal Time
(UTC) timestamp for the request. You can specify the timestamp either
in the x-ms-date header, or in the standard HTTP/HTTPS Date header. If
both headers are specified on the request, the value of x-ms-date is
used as the request's time of creation. The storage services ensure
that a request is no older than 15 minutes by the time it reaches the
service. This guards against certain security attacks, including
replay attacks. When this check fails, the server returns response
code 403 (Forbidden).
Your 2015-02-05 if far from valid UTC date format.
And according to this documentation here, and the sample PUT request, the Date header is represented as x-ms-date: Wed, 23 Oct 2013 22:41:55 GMT
There is no single in the Azure Blob REST API documentation where Date is referred to as yyyy-mm-dd format.