private async Task PassClearance(HttpResponseMessage response, CancellationToken cancellationToken)
{
SaveIdCookie(response);
var pageContent = await response.Content.ReadAsStringAsync(); //CloudFlare页面获得
var scheme = response.RequestMessage.RequestUri.Scheme; //https
var host = response.RequestMessage.RequestUri.Host; //suicibei.nyaa.si
var port = response.RequestMessage.RequestUri.Port; //443
var solution = ChallengeSolver.Solve(pageContent, host); //获得验证信息
var clearanceUri = $"{scheme}://{host}:{port}{solution.ClearanceQuery}"; //验证完毕
await Task.Delay(5000, cancellationToken); //等待5S
var clearanceRequest = new HttpRequestMessage(HttpMethod.Get, clearanceUri);
IEnumerable <string> userAgent;
if (response.RequestMessage.Headers.TryGetValues(HttpHeader.UserAgent, out userAgent))
{
clearanceRequest.Headers.Add(HttpHeader.UserAgent, userAgent);
}
await _client.SendAsync(clearanceRequest, cancellationToken);//得到答案后再一次获得。
}
private async Task PassClearance(HttpResponseMessage response, CancellationToken cancellationToken)
{
SaveIdCookie(response);
var pageContent = await response.Content.ReadAsStringAsync();
var scheme = response.RequestMessage.RequestUri.Scheme;
var host = response.RequestMessage.RequestUri.Host;
var port = response.RequestMessage.RequestUri.Port;
var solution = ChallengeSolver.Solve(pageContent, host);
var clearanceUri = $"{scheme}://{host}:{port}{solution.ClearanceQuery}";
await Task.Delay(5000, cancellationToken);
var clearanceRequest = new HttpRequestMessage(HttpMethod.Get, clearanceUri);
IEnumerable <string> userAgent;
if (response.RequestMessage.Headers.TryGetValues(HttpHeader.UserAgent, out userAgent))
{
clearanceRequest.Headers.Add(HttpHeader.UserAgent, userAgent);
}
var passResponse = await _client.SendAsync(clearanceRequest, cancellationToken);
SaveIdCookie(passResponse); // new ID might be set as a response to the challenge in some cases
}
private async Task PassClearance(HttpResponseMessage response, CancellationToken cancellationToken)
{
SaveIdCookie(response);
var pageContent = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
var scheme = response.RequestMessage.RequestUri.Scheme;
var host = response.RequestMessage.RequestUri.Host;
var port = response.RequestMessage.RequestUri.Port;
var solution = ChallengeSolver.Solve(pageContent, host);
var clearanceUri = $"{scheme}://{host}:{port}{solution.ClearanceQuery}";
await Task.Delay(ClearanceDelay, cancellationToken).ConfigureAwait(false);
var clearanceRequest = new HttpRequestMessage(HttpMethod.Get, clearanceUri);
if (response.RequestMessage.Headers.TryGetValues(HttpHeader.UserAgent, out var userAgent))
{
clearanceRequest.Headers.Add(HttpHeader.UserAgent, userAgent);
}
if (response.RequestMessage.RequestUri != null)
{
clearanceRequest.Headers.Add("Referer", response.RequestMessage.RequestUri.ToString());
}
clearanceRequest.Headers.Add("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8");
clearanceRequest.Headers.Add("Upgrade-Insecure-Requests", "1");
var passResponse = await _client.SendAsync(clearanceRequest, cancellationToken).ConfigureAwait(false);
SaveIdCookie(passResponse); // new ID might be set as a response to the challenge in some cases
}
