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即时通信(RPC)的Rtmp实现--代码实现篇

实现的一般步骤是:

step 1: 定义NetConnection对象连接rtmp,并监听NetStatusEvent.NET_STATUS事件

step 2: 在NetStatusEvent.NET_STATUS事件里判断event.info.code=="NetConnection.Connect.Success",通过SharedObject.getRomote()得到SharedObject对象

step 3: 监听SharedObject对象的SyncEvent.SYNC事件,并sharedObj.connect(netConnection)

step 4: 这个时候可以利用sharedObj.send()向服务器发送消息,然后服务器再把登录消息广播给当前连接的所有客户端

step 5: 在SyncEvent.SYNC事件里可以取到sharedObj.data里的数据了

step 6: 定义一个供服务器调用后得到返回值的函数,需要声明为public

PS:

服务器端和客户端,都是在操作SharedObject对象,客户端是读取,服务器端是写入(只有服务器执行写入才能保证数据无误)

服务器端发送消息给每个客户端,分为客户端请求和服务器端请求实现

* 客户端请求一般是调用sharedObj.send("getServerData","message")来实现

* 服务器端是调用netConnection.call("后台方法",null,"message"),然后后台方法定义通过soUser.SendMessage("getServerData", new object[]{"message"})来发送消息

服务器端代码(.net):

using System;using System.Collections.Generic;using System.Text;using FluorineFx.Messaging.Adapter;using FluorineFx.Messaging.Api;using FluorineFx.Messaging.Api.SO;namespace ServiceLibrary5{    public class MyChatApp : ApplicationAdapter    {        public override bool AppConnect(IConnection connection, object[] parameters)        {            string name = parameters[0].ToString();            ISharedObject soUser = this.GetSharedObject(connection.Scope, "onlineUserList");            if (soUser == null)            {                this.CreateSharedObject(connection.Scope, "onlineUserList", false);                soUser = this.GetSharedObject(connection.Scope, "onlineUserList");            }            soUser.SetAttribute(name, name);           //这里是为了提供给没有parameters参数,而又需要访问连接时传过来的参数               connection.Client.SetAttribute("currentName", name);            return true;        }        public override void AppDisconnect(IConnection connection)        {            string name = connection.Client.GetAttribute("currentName").ToString();            ISharedObject soUser = this.GetSharedObject(connection.Scope, "onlineUserList");            if (soUser != null)            {                soUser.RemoveAttribute(name);            }            soUser.SendMessage("getServerData", new object[] { name + "已经断开" });            base.AppDisconnect(connection);        }       //利用服务器端发送消息的通用方法,客户端需通过netConnection.call()来调用该方法          public void sendMessage(IConnection connection, string msg)        {            string userName = connection.Client.GetAttribute("currentName")  as  string;            ISharedObject soUser = GetSharedObject(connection.Scope, "onlineUserList");            soUser.SendMessage("getServerData", new object[] { msg });        }    }}

客户端代码(flex):

<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" backgroundColor="0xffffff">	<mx:List x="404" y="122" backgroundColor="#3A6EA5" width="115" height="289" id="dlOnlineUsers"></mx:List>	<mx:Label x="420" y="92" text="当前在线用户" fontSize="13"/>	<mx:Label x="67" y="122" text="你的昵称:" fontSize="13"/>	<mx:TextInput id="txtName" x="134" y="123"/>	<mx:Button x="302" y="121" label="登录" click="onLogin()" fontSize="12"/>	<mx:Label x="67" y="225" text="系统信息" fontSize="13"/>	<mx:TextArea id="txtMessage" x="67" y="279" width="287" backgroundColor="#3A6EA5" color="0xffffff" />	<mx:Button x="270" y="420" label="注销" fontSize="12" click="onDisconnect()" />	<mx:Script>		<![CDATA[			private var nc:NetConnection;			private var soUser:SharedObject;					private function onLogin():void			{				nc = new NetConnection();				nc.addEventListener(NetStatusEvent.NET_STATUS,onNetStatus);				nc.connect("rtmp://localhost:8323/MyChatRoom",this.txtName.text);				nc.client = this;			}						private function onNetStatus(event:NetStatusEvent):void			{				if(event.info.code == "NetConnection.Connect.Success")				{					soUser = SharedObject.getRemote("onlineUserList",nc.uri,false);					if(soUser != null)					{						soUser.addEventListener(SyncEvent.SYNC,onSYNC);						soUser.connect(nc);						soUser.client = this;					}					soUser.send("getServerData","用户【" + this.txtName.text + "】已连接");				}				}						private function onDisconnect():void			{				nc.close();			}						private function onSYNC(event:SyncEvent):void			{				var arrUser:Array = new Array();				for(var str:String  in  soUser.data)				{					arrUser.push(soUser.data[str]);				}				this.dlOnlineUsers.dataProvider = arrUser;			}						public function getServerData(message:Object):void			{				this.txtMessage.text += message.toString()+"\n";			}		]]>	</mx:Script>	</mx:Application>

即时通信(RPC)的Rtmp实现--代码实现篇