C# Remoting的一个简单例子
.Net对于远程调用提供了两种方法:Remoting和WebService。
WebService现在是如火如荼,特别是有一种比较流行的架构:Winform+WebService(Java、.Net),
我曾经做过的一个项目就是这样子的,分布式、跨平台、极佳的用户体验,这三者结合起来是不是很诱人?
不过,这里我只说Remoting,Remoting具有以下特点:
1、Tcp通道的Remoting速度非常快
2、虽然是远程的,但是非常接近于本地调用对象
3、可以做到保持对象的状态
4、没有应用程序限制,可以是控制台,winform,iis,windows服务承载远程对象
缺点:
1、不是标准的应用,因此有平台限制
2、脱离iis的话需要有自己的安全机制
可以看出来,比起WebService,Remoting更适合于中小型局域网应用,而不适用于企业级的应用。
下面给出一个极其简单的Sample:
Remoting用的对象:
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namespace RemoteSample
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{
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public class RemoteObject : System.MarshalByRefObject
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{
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public RemoteObject()
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{
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System.Console.WriteLine("New Referance Added!");
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}
9![](/Images/OutliningIndicators/InBlock.gif)
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public int sum(int a, int b)
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{
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return a + b;
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}
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}
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}
将其编译为一个lib文件:csc /t:library RemoteObject.cs![](/Images/OutliningIndicators/None.gif)
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Server端:
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using System;
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using System.Runtime;
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using System.Runtime.Remoting;
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using System.Runtime.Remoting.Channels;
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using System.Runtime.Remoting.Channels.Tcp;
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using RemoteSample;
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namespace RemoteSampleServer
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{
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public class RemoteServer
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{
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public static void Main(String[] args)
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{
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TcpServerChannel channel = new TcpServerChannel(6666);
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ChannelServices.RegisterChannel(channel);
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RemotingConfiguration.RegisterWellKnownServiceType(typeof(RemoteObject),
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"RemoteObject", WellKnownObjectMode.SingleCall);
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System.Console.WriteLine("Press Any Key");
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System.Console.ReadLine();
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}
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}
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}
将其编译为一个exe文件:csc /r:System.Runtime.Remoting.dll /r:RemoteObject.dll RemoteServer.cs![](/Images/OutliningIndicators/None.gif)
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Client端:
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using System;
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using System.Runtime.Remoting;
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using System.Runtime.Remoting.Channels;
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using System.Runtime.Remoting.Channels.Tcp;
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using RemoteSample;
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namespace RemoteSampleClient
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{
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public class RemoteClient
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{
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public static void Main(string[] args)
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{
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ChannelServices.RegisterChannel(new TcpClientChannel());
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RemoteObject remoteobj = (RemoteObject)Activator.GetObject(typeof(RemoteObject),
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"tcp://localhost:6666/RemoteObject");
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Console.WriteLine("1 + 2 = " + remoteobj.sum(1,2).ToString());
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Console.ReadLine();
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}
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}
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}
同样的,将其编译为exe文件:csc /r:System.Runtime.Remoting.dll /r:RemoteObject.dll RemoteClient.cs![](/Images/OutliningIndicators/None.gif)
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![](/Images/OutliningIndicators/ExpandedBlockEnd.gif)
好了,一次运行生成的RemoteServer.exe和RemoteClient.exe,你就会发现原来Remoting是这样简单。