public async Task <Response> DownloadToAsync(
Stream destination,
BlobRequestConditions conditions,
CancellationToken cancellationToken)
{
// Wrap the download range calls in a Download span for distributed
// tracing
DiagnosticScope scope = _client.ClientConfiguration.ClientDiagnostics.CreateScope($"{nameof(BlobBaseClient)}.{nameof(BlobBaseClient.DownloadTo)}");
try
{
scope.Start();
// Just start downloading using an initial range. If it's a
// small blob, we'll get the whole thing in one shot. If it's
// a large blob, we'll get its full size in Content-Range and
// can keep downloading it in segments.
var initialRange = new HttpRange(0, _initialRangeSize);
Task <Response <BlobDownloadStreamingResult> > initialResponseTask =
_client.DownloadStreamingAsync(
initialRange,
conditions,
rangeGetContentHash: false,
cancellationToken);
Response <BlobDownloadStreamingResult> initialResponse = null;
try
{
initialResponse = await initialResponseTask.ConfigureAwait(false);
}
catch (RequestFailedException ex) when(ex.ErrorCode == BlobErrorCode.InvalidRange)
{
initialResponse = await _client.DownloadStreamingAsync(
range : default,
