Asp.net Transfer-Encoding: chunked

        protected void Page_Load(object sender, EventArgs e)
        {
            Response.BufferOutput = false;
            Response.Flush();
            for (int i = 0; i < 100; i++)
            {
                if (!Response.IsClientConnected)
                {
                    break;
                }
                Response.Write(string.Format("{0}<br />", i));
                Response.Flush();
                Thread.Sleep(1000);
            }
        }