/// <summary>
/// Gets the value of the x-ms-date or Date header.
/// </summary>
/// <param name="request">The request where the value is read from.</param>
/// <returns>The value of the x-ms-date or Date header.</returns>
public static string GetPreferredDateHeaderValue(HttpRequestMessage request)
{
string microsoftDateHeaderValue = HttpResponseMessageUtils.GetHeaderSingleValueOrDefault(request.Headers, Constants.HeaderConstants.Date);
if (!string.IsNullOrEmpty(microsoftDateHeaderValue))
{
return(microsoftDateHeaderValue);
}
return(AuthenticationUtility.GetCanonicalizedHeaderValue(request.Headers.Date));
}
internal async static Task <StorageException> PopulateStorageExceptionFromHttpResponseMessage(HttpResponseMessage response, RequestResult currentResult, Func <Stream, HttpResponseMessage, string, StorageExtendedErrorInformation> parseError)
{
if (!response.IsSuccessStatusCode)
{
try
{
currentResult.HttpStatusMessage = response.ReasonPhrase;
currentResult.HttpStatusCode = (int)response.StatusCode;
currentResult.ServiceRequestID = HttpResponseMessageUtils.GetHeaderSingleValueOrDefault(response.Headers, Constants.HeaderConstants.RequestIdHeader);
string tempDate = HttpResponseMessageUtils.GetHeaderSingleValueOrDefault(response.Headers, Constants.HeaderConstants.Date);
currentResult.RequestDate = string.IsNullOrEmpty(tempDate) ? DateTime.Now.ToString("R", CultureInfo.InvariantCulture) : tempDate;
if (response.Headers.ETag != null)
{
currentResult.Etag = response.Headers.ETag.ToString();
}
if (response.Content != null && response.Content.Headers.ContentMD5 != null)
{
currentResult.ContentMd5 = Convert.ToBase64String(response.Content.Headers.ContentMD5);
}
}
catch (Exception)
{
// no op
}
try
{
Stream errStream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
if (parseError != null)
{
currentResult.ExtendedErrorInformation = parseError(errStream, response, response.Content.Headers.ContentType.ToString());
}
else
{
currentResult.ExtendedErrorInformation = await StorageExtendedErrorInformation.ReadFromStreamAsync(errStream.AsInputStream());
}
}
catch (Exception)
{
// no op
}
return(new StorageException(currentResult, response.ReasonPhrase, null));
}
else
{
return(null);
}
}
/// <summary>
/// Appends the value of the Date header (or, optionally, the x-ms-date header) to the specified canonicalized string.
/// </summary>
/// <param name="canonicalizedString">The canonicalized string where the value is appended.</param>
/// <param name="request">The request where the value is read from.</param>
/// <param name="allowMicrosoftDateHeader">true if the value of the x-ms-date header can be used and is preferred; otherwise, false.</param>
public static void AppendCanonicalizedDateHeader(CanonicalizedString canonicalizedString, HttpRequestMessage request, bool allowMicrosoftDateHeader = false)
{
string microsoftDateHeaderValue = HttpResponseMessageUtils.GetHeaderSingleValueOrDefault(request.Headers, Constants.HeaderConstants.Date);
if (string.IsNullOrEmpty(microsoftDateHeaderValue))
{
canonicalizedString.AppendCanonicalizedElement(AuthenticationUtility.GetCanonicalizedHeaderValue(request.Headers.Date));
}
else if (allowMicrosoftDateHeader)
{
canonicalizedString.AppendCanonicalizedElement(microsoftDateHeaderValue);
}
else
{
canonicalizedString.AppendCanonicalizedElement(null);
}
}