在Asp.net下實(shí)現(xiàn)變長(zhǎng)連接的web即時(shí)應(yīng)用的實(shí)現(xiàn)范例及ReverseAjax的演示介紹

%@ Page Language="C#" AutoEventWireup="true" CodeFile="response.aspx.cs" Inherits="_Default" Async="true" AsyncTimeout="30" EnableSessionState="False"%>
if (Request.Form.Count>0)
{
if (Request.Form["type"] == "loop")
{
ChatTask task = new ChatTask(this.Context);
task._chatNow = this.ChatNow;//有新的消息的回調(diào)方法，即為通知處理，這個(gè)時(shí)候釋放掉連接
string user = Request.Form["user"].Trim();
PageAsyncTask async = new PageAsyncTask(new BeginEventHandler(task.OnBegin), new EndEventHandler(task.OnEnd), new EndEventHandler(task.OnTimeout), user);
Page.RegisterAsyncTask(async);
Page.ExecuteRegisteredAsyncTasks();//異步執(zhí)行
}
}