关于使用htmlfile对象长连接的问题

   var url = 'DesktopModules/MessageManage/RealtimeMessage.aspx?MessageListStat=0&MessageListDetail=1&MessageMsn=2';
var comet = {
    connection: false,
    iframediv: false,    initialize: function() {
        if (navigator.appVersion.indexOf("MSIE") != -1) {
            // For IE browsers  
            comet.connection = new ActiveXObject("htmlfile");
            comet.connection.open();
            comet.connection.write("<html>");
            comet.connection.write("<script>document.domain = '" + document.domain + "'");
            comet.connection.write("</html>");
            comet.connection.close();
            comet.iframediv = comet.connection.createElement("div");
            comet.connection.appendChild(comet.iframediv);
            comet.connection.parentWindow.comet = comet;
            comet.iframediv.innerHTML = "<iframe id='comet_iframe' src='./" + url + "'></iframe>";
     这是我从网上下载的脚本,可以建立长连接以下是我的服务端代码,也可以循环发送给客户端
  <%        Response.Flush();        int top = lblTop.Text.Equals("") ? 20 : Convert.ToInt32(lblTop.Text);
        
       // System.Xml.XmlNode settingNode = message.GetMessageSetting();       // bool serviceRunning = settingNode.Attributes["ServiceRunning"].Value.ToLower().Equals("true");
       // int refreshSpanSeconds = int.Parse(settingNode.Attributes["RefreshSpan"].Value) * 1000;       int refreshSpanSeconds = 1000;
       //int num = 0;
        do
        {
   // if(num++==1)
//{
//  Response.Write("<script type='text/javascript'>window.parent.comet.reload();</script>");
// num = 0;
//}             string[] keys = Request.QueryString.AllKeys;
            for (int i = 0; i <= keys.Length - 1; i++)
            {
                string function = keys[i];//获取函数名，以便把数据发送到该函数的客户端                string data = GetData(top,function);                if (data.StartsWith("[")&data.EndsWith("]"))
                {
                    Response.Write("<script type='text/javascript'>eval(\"window.parent.comet." + function + "(" + data + ")\");</script>");
                }
                else
                {
                    Response.Write("<script type='text/javascript'>eval(\"window.parent.comet." + function + "('" + data + "')\");</script>");
                }
            }
try
                {
                Response.Flush();
                }
                catch
                {
                 break;
                }   System.Threading.Thread.Sleep(refreshSpanSeconds);           // if (!serviceRunning)
           // {
 
             // break;
           //  }

        }while(true);
  
     %>
    
  以下是运行遇到的问题:
  打开客户端第一次建立好长连接之后.当其他aspx页面第一次请求时,为什么需要等上差不多2分钟的时候,服务器端才接收到这个请求,之后请求就一切就正常了,每次新建长连接之后,都会遇到这个郁闷的问题,有没高手指点,谢谢!