Using IHttpAsyncHandler and XMLHttpRequest to “push” messages to the client

//
// This code is released under Common Public License Version 1.0 (CPL)
// Full license text is available at http://www.opensource.org/licenses/cpl1.0.php
//
// Author  : Karel Boek
// Date    : Sept 29, 2009
// Contact : karel.boek@raskenlund.com
//

using System;
using System.Web.UI.WebControls;

namespace SandBox.CometSample
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Init(object sender, EventArgs e)
        {
            if (IsPostBack)
                return;

            ltlSessionId.Text = Session.SessionID;
            
            foreach (var sessionId in Global.Sessions)
                if (sessionId == Session.SessionID)
                    ddlSessions.Items.Add(new ListItem("Myself", sessionId));
                else
                    ddlSessions.Items.Add(new ListItem(sessionId, sessionId));
        }
    }
}