private static async Task <byte[]> LoadArticleInternal(SciHubData data, ICaptchaSolvingStrategy solvingStrategy)
{
var bytes = await WebUtility.SimpleByteRequest(data.Url);
if (bytes == null || bytes.Length < 6)
{
throw new SciHubException(SciHubExceptionType.Article);
}
if (!IsHtml(bytes))
{
return(bytes);
}
var fullHtml = Encoding.UTF8.GetString(bytes);
data.Html = fullHtml;
await LoadImage(data);
do
{
var solved = await solvingStrategy.Solve(data.ImageData);
if (solved.Aborted)
{
return(null);
}
if (solved.Reload)
{
return(await LoadArticleInternal(data, solvingStrategy));
}
await PostCaptcha(data, solved.Captcha);
if (data.ArticleData == null)
{
await solvingStrategy.Invalidate(solved.Captcha);
}
}while (data.ArticleData == null);
return(data.ArticleData);
}
public static async Task <byte[]> LoadArticle(string url, ICaptchaSolvingStrategy strategy)
{
var data = new SciHubData
{
Url = url
};
try
{
await strategy.Initialize();
var result = await LoadArticleInternal(data, strategy);
return(result);
}
catch
{
throw;
}
finally
{
await strategy.Finish();
}
}
