Remoting实现简易的命令行控制台聊天.doc

.Net Remoting 实现简易的控制台命令行聊天室本套程序由四个主要的对象组成:1. ChatRoom (ChatRoom.cs): 服务器端真正的提供远程服务的对象,负责以服务器推(push)的方式把 Sender 发来的消息广播出去。 /* csc.exe ChatRoom.cs /t:library ChatRoom.dll*/using System;using System.Runtime.Remoting;Serializablepublic class ChatRoom : MarshalByRefObject /定义了 1 个名为 ChatRoomEventHandler 的事件处理委托 及其参数格式签名 public delegate void ChatRoomEventHandler(string s); /定义了 3 个 ChatRoomEventHandler 委托类型 的事件及远程回调函数 public event ChatRoomEventHandler MessageReceive; /消息接收事件 public event ChatRoomEventHandler Login; /登录事件 public event ChatRoomEventHandler Logoff; /退出事件 public void OnMessageReceive(string Message) if (MessageReceive != null) /触发 Receiver 客户端 MessageReceive 事件,广播所有消息 MessageReceive(Message); Console.WriteLine(Server: + Message); /服务器消息监视 public void OnLogin(string User) if (Login != null) /触发 Receiver 客户端 Login 事件,广播 登录 消息 Login(System say: + User + Login!); Console.WriteLine(Server: + User + Login!); public void OnLogoff(string User) if (Logoff != null) /触发 Receiver 客户端 Logoff 事件,广播 退出 消息 Logoff(System say: + User + Logoff!); Console.WriteLine(Server: + User + Logoff!); public override object InitializeLifetimeService() return null; 2. Server: 服务器。远程服务对象的宿主程序而已。/* csc.exe Server.cs*/using System;using System.Runtime.Remoting;class Server public static void Main(string Args) RemotingConfiguration.Configure(s.config); Console.WriteLine(Server . , Press Enter key to exit.); Console.ReadLine(); 下面是 Server 的配置文件 (s.config): 3. Sender (Sender.cs): 客户端消息发送器对象,负责把广播的消息发送到远程服务对象。/* csc.exe /r:ChatRoom.dll Sender.cs*/using System;using System.Timers;using System.Runtime.Remoting;using System.Runtime.Remoting.Channels;using System.Runtime.Remoting.Channels.Http;class Sender ChatRoom x; public static void Main(string Args) Sender y = new Sender(); y.Run(); string User; public void Run() Console.WriteLine(Messages Sender . ,Press q to exit Chatting.);/ 以配置方式获取远程服务对象实例/ RemotingConfiguration.Configure(c.config);/ x = new ChatRoom(); /以编程方式获取远程服务对象实例 System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(new System.Runtime.Remoting.Channels.Http.HttpChannel(); x = (ChatRoom) System.Activator.GetObject(typeof(ChatRoom),http:/server:8080/ChatRoomURL);/先登录 Console.WriteLine(make a name then Login Please:); User = Console.ReadLine(); /调用此远程方法,通知服务器触发 Receiver 客户端 Login 事件,广播 登录 消息 x.OnLogin(User); Console.WriteLine(welcome + User + ,Send your Message Please:); string s; /存储键入的消息文字 while (s=Console.ReadLine() != q) /如果键入 q 退出循环 /调用此远程方法,通知服务器触发 Receiver 客户端 MessageReceive 事件,广播你所键入的消息 x.OnMessageReceive(User + say: + s); /调用此远程方法,通知服务器触发 Receiver 客户端 Logoff 事件,广播 退出 消息 x.OnLogoff(User); Console.WriteLine(bye bye + User); 4. Receiver (Receiver.cs): 客户端消息接收器对象,负责自动接收远程服务对象从 Sender 接收并转发广播的所有消息。/* csc.exe /r:ChatRoom.dll Receiver.cs*/using System;using System.Runtime.Remoting;using System.Runtime.Remoting.Channels;using System.Runtime.Remoting.Channels.Http;/Receiver 对象必须要继承 MarshalByRefObject,由于相对于服务器, Receiver 对象 也要为其提供远程服务。class Receiver : MarshalByRefObject ChatRoom x; public static void Main() Receiver y = new Receiver(); y.Run(); public void Run() RemotingConfiguration.Configure(c.config); /相当于后期运行时绑定 x = new ChatRoom(); /向远程服务对象注册本地回调函数 this.Message_Receive1 x.MessageReceive += new ChatRoom.ChatRoomEventHandler(this.Message_Receive1); /Login Logoff 与 MessageReceive 签名一样 x.Login += new ChatRoom.ChatRoomEventHandler(this.Message_Receive1); x.Logoff += new ChatRoom.ChatRoomEventHandler(this.Message_Receive1); Console.WriteLine(Messages Receiver . ,Press Enter key to exit.); Console.ReadLine(); /退出关闭接收器 /千万不要忘记结束时取消委托关系 x.MessageReceive -= new ChatRoom.ChatRoomEventHandler(this.Message_Receive1); x.Login -= new ChatRoom.ChatRoomEventHandler(this.Message_Receive1); x.Logoff -= new ChatRoom.ChatRoomEventHandler(this.Message_Receive1); /这个就是被服务器端远程回调的函数 public void Message_Receive1(string s) Console.WriteLine(s);/在本地显示接收的广播消息 public override object InitializeLifetimeService() return null; 下面是 Sender 和 Receiver 的配置文件 (c.config): 编译:csc /t:library chatroom.cscsc /r:chatroom.dll server.cscsc /r:chatroom.dll sender.cscsc /r:chatroom.dll receiver.cs用法