Web site anti-Malware refresh cookies and session resolution

This article is an example of the Web site anti-Malware refresh of the cookie and session resolution, is a very useful technique in the design of the Internet. Share to everyone for your reference. The implementation method is as follows:

Session Version Implementation method:

public double time; public const int freetime = 1; //防刷冰冻时间间隔,当前为1秒 #region 防恶意刷新 if (Session.SessionID == null ) {    Response.End(); } else if (Session[ "sionid" ] == null ) {    Session[ "sionid" ] = Session.SessionID; } if (Session[ "last" ] == null ) {    Session[ "last" ] = DateTime.Now; } else {    DateTime thisTime = DateTime.Now;    DateTime lastTime = DateTime.Parse(Session[ "last" ].ToString());    if (Session.SessionID == Session[ "sionid" ].ToString())   Session[ "last" ] = thisTime;    TimeSpan ts = thisTime - lastTime;    time = ts.TotalMilliseconds;    if (time < freetime * 500)    {   warm_prompt();    } } #endregion public void warm_prompt() {      Response.Write( "<table width=‘778‘ border=‘0‘ align=‘center‘ cellpadding=‘3‘ cellspacing=‘2‘ bgcolor=‘#009900‘ style=‘font-size: 14px; ‘>" );      Response.Write( " <tr bgcolor=‘#FFFFFF‘>" );      Response.Write( "  <td></td>" );      Response.Write( "  <td bgcolor=‘#EEFFEE‘为了保证您的访问安全,请您 " + freetime + " 秒后<a href=‘" + Request.RawUrl + "‘ target=‘_self‘ style=‘color:#FF0000;‘>点击这里刷新</a>此页面</td>" );      Response.Write( " </tr>" );      Response.Write( "</table>" );      Response.End(); } How to implement the cookie version: public double time; public const int freetime = 2; #region 防恶意刷新 string page; if (Request.Cookies[ "page" ] == null ) {    page = "" ; } else {    page = HttpContext.Current.Request.Cookies[ "page" ].Value.ToString(); //获取cookie中存储的url值 } string strThisPage = HttpContext.Current.Request.Url.PathAndQuery.ToString(); //获取当前页地址 DateTime LastTime = DateTime.Now; if (page.Equals(strThisPage)) //如果cookie中的值和当前页相等，那么表示是刷新操作 {    TimeSpan ts = LastTime - DateTime.Parse(HttpContext.Current.Request.Cookies[ "time" ].Value.ToString());    time = ts.Seconds;    if (time < freetime)    {   warm_prompt();    } } else {    //执行操作    Response.Cookies[ "page" ].Value = strThisPage;    Response.Cookies[ "time" ].Value = LastTime.ToString(); } #endregion public void warm_prompt() {      Response.Write( "<table width=‘778‘ border=‘0‘ align=‘center‘ cellpadding=‘3‘ cellspacing=‘2‘ bgcolor=‘#009900‘ style=‘font-size: 14px; ‘>" );      Response.Write( " <tr bgcolor=‘#FFFFFF‘>" );      Response.Write( "  <td></td>" );      Response.Write( "  <td bgcolor=‘#EEFFEE‘为了保证您的访问安全,页面将在2秒后将自动跳转到您要访问的内容！</td>" );      Response.Write( " </tr>" );      Response.Write( "</table>" );      Response.Write( "<meta http-equiv=\"refresh\" content=\"2\";URL=" + HttpContext.Current.Request.Cookies[ "page" ].Value.ToString() + ">" );      Response.End(); }

Web site anti-Malware refresh cookies and session resolution