bwatts

  public string GetCanonicalizedHeaders(HttpWebRequest request)
  {
      ArrayList headerNameList = new ArrayList();
      StringBuilder sb = new StringBuilder();
      foreach (string headerName in request.Headers.Keys)
      {
          if (headerName.ToLowerInvariant().StartsWith("x-ms-", StringComparison.Ordinal))
          {
              headerNameList.Add(headerName.ToLowerInvariant());
          }