在Windows Phone 10中使用HttpClient下载大型视频文件时没有响应

Question

我正在使用以下代码段下载大型视频（大小：小于14MB）。它在Windows Phone 8.1设备中工作正常但在Windows Phone 10设备中执行相同时会永远卡住。 它在Windows Phone 10设备中下载小文件（大小约为1MB），但在下载大型视频文件时不会出现任何异常而永久停留。

try
{
    Uri uri = new Uri(url + "?refresh=" + Guid.NewGuid().ToString());
    var httpClient = new HttpClient();
    httpClient.Timeout = TimeSpan.FromMinutes(3);
    var httpResponse = await httpClient.GetAsync(uri);
    httpResponse.EnsureSuccessStatusCode();
    byte[] dataByte = await httpResponse.Content.ReadAsByteArrayAsync();

    StorageFolder appFolder = ApplicationData.Current.LocalFolder;
    StorageFile file = await appFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
    await FileIO.WriteBytesAsync(file, dataByte);
    return "success";
}
catch (Exception ex)
{
    throw new Exception();
}