/// <summary>
/// 检测请求并抛出异常
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected virtual void CheckResponse(object sender, EventArgs e)
{
var ctx = (HttpContext)sender;
var response = ctx.Response;
var content = ctx.ResponseContent;
var request = ctx.Request;
var cookies = response.Cookies;
var redirection = response.Redirection;
//IP被封？
if (string.Compare(response.ResponseUri.Host, "kyfw.12306.cn", StringComparison.OrdinalIgnoreCase) == -1)
{
return;
}
if (
response.ContentType?.IndexOf("application/json") >= 0 &&
content is ResponseBinaryContent rbc &&
rbc.StringResult.IndexOf("\":[\"网络繁忙\"]", StringComparison.OrdinalIgnoreCase) != -1
)
{
throw new SystemBusyException();
}
if (content is ResponseBinaryContent && redirection == null)
{
var allowEmptyResult = false;
allowEmptyResult |= response.ResponseUri.PathAndQuery.IndexOf("login/userLogin") != -1;
allowEmptyResult |= response.ResponseUri.PathAndQuery.IndexOf("dynamicJs/") != -1;
if (!allowEmptyResult && response.ContentLength == 0)
{
throw new EmptyResponseException();
}
}
//更新服务器信息
if ((response.Status == HttpStatusCode.Found || response.Status == HttpStatusCode.OK) && ((response.Headers["X-Cache"].IsNullOrEmpty() || response.Headers["X-Cache"].IndexOf("MISS") != -1) && response.Headers["Age"].IsNullOrEmpty() && !response.Headers["Date"].IsNullOrEmpty()))
{
var dt = response.Headers["Date"].ToDateTimeNullable();
if (dt.HasValue)
{
RunTime.UpdateServerTimeOffset(dt.Value);
}
}
//系统维护？
//if (content is ResponseStringContent && ((!ctx.Request.Host.IsNullOrEmpty() && ctx.Request.Host.IndexOf("12306.cn") != -1) || ctx.Request.Uri.Host.IndexOf("12306.cn") != -1) && ((content as ResponseStringContent).Result.IndexOf("系统维护") != -1))
//{
// throw new Entity.SystemClosedException();
//}
////登录冲突
//if ((content as ResponseStringContent)?.Result.IndexOf("noticeSessionCollect = 'Y'") > 0)
//{
// Session.OnLoginConflict(Session);
// throw new EmptyResponseException();
//}
if (ApiConfiguration.Instance.EnableDynamicJs && content is ResponseStringContent && (ctx.IsSuccess && response.ContentType.IndexOf("text/html") != -1))
{
//检测dynamicjs
var m = Regex.Match((content as ResponseStringContent).Result, @"/otn/(dynamicJs\/(.+?))['""]", RegexOptions.Singleline | RegexOptions.IgnoreCase);
if (m.Success)
{
var id = m.GetGroupValue(2);
var url = m.GetGroupValue(1);
var data = new DynamicJsData()
{
Id = id,
SourceUrl = url
};
var jsCtx = Create <string>(HttpMethod.Get, url, request.Uri.ToString()).Send();
if (jsCtx.IsValid())
{
var jscontent = jsCtx.Result;
var mcs = Regex.Matches(jscontent, @"/otn/(dynamicJs\/(.+?))['""]", RegexOptions.Singleline | RegexOptions.IgnoreCase);
var km = Regex.Match(jscontent, @"gc\(\)\s*{.*?['""]([^""']+)['""]", RegexOptions.Singleline);
if (mcs.Count >= 1 && km.Success)
{
data.PingUrl = mcs[0].GetGroupValue(1);
data.NeedImmediatePingback = mcs.Count > 1;
data.Key = km.GetGroupValue(1);
data.EncodedValue = Base32.Encode(data.Key);
data.ValidateData = $"{data.Key},-,{Base32.Encode(data.Key)}:::myversion,-,undefined";
if (data.NeedImmediatePingback)
{
Create <string>(HttpMethod.Post, data.PingUrl, request.Uri.ToString()).Send();
}
DynamicJsData = data;
}
}
}
}
AppContext.ExtensionManager.WebRequestInspectors?.ForEach(s => s.ValidateResponse(ctx, request, response, request.RequestData, content, cookies));
}
