c# 远程调用 / Remoting IpcChannel sample

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远程调用

1. 创建一个远程的可序列化的类，这个类可以在远程调用中用于传输来去，似乎是个公共的类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.Remoting.Metadata;

namespace MessageMarshal
{

        /*创建发送消息委托*/
        public delegate void SendMessageHandler(string messge);
        [Serializable]
        public class TestMessageMarshal : MarshalByRefObject
        {
            private Guid ID { get; set; }
            /*新建对象实例时重新创建标识编号*/
            public TestMessageMarshal()
            {
                ID = Guid.NewGuid();
            }

            public static event SendMessageHandler SendMessageEvent;

           // [SoapMethod(XmlNamespace = "MessageMarshal", SoapAction = "MessageMarshal#SendMessage")]
            public void SendMessage(string messge)
            {
                if (SendMessageEvent != null)
                    SendMessageEvent(ID.ToString() + "\t" + messge);
            }
        }

}

　　

2. 创建服务器的类：

using MessageMarshal;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Runtime.Remoting.Channels.Ipc;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace ServerApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            TestStartServer();
        }

         void TestStartServer() {

            /*创建HTTP通道*/
            IpcChannel  channel = new IpcChannel("test");//或者 IpcServerChannel serverChannel = new IpcServerChannel("test");

            /*注册通道服务端*/
            ChannelServices.RegisterChannel(channel, false);
            /*设置模式为 Singleton */
            RemotingConfiguration.RegisterWellKnownServiceType(typeof(TestMessageMarshal), "MessageMarshal.TestMessageMarshal", WellKnownObjectMode.SingleCall);
            txtLog.AppendText("started ..." + "\r\n");
            /*接收客户端事件*/
            TestMessageMarshal.SendMessageEvent += new SendMessageHandler(TestMessageMarshal_SendMessageEvent);
            Console.Read();
        }

       void TestMessageMarshal_SendMessageEvent(string messge)
        {
            txtLog.AppendText(messge+"\r\n");
        }

    }
}

　　

3. 创建客户端类：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MessageMarshal;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;
using System.Threading;
using System.Runtime.Remoting.Channels.Ipc;

namespace GPRemoteClient
{
    class Program
    {
        static void Main(string[] args)
        {
            IpcChannel channel = new IpcChannel();//或者IpcClientChannel channel = new IpcClientChannel("channel2", new BinaryClientFormatterSinkProvider());

            ChannelServices.RegisterChannel(channel, false);
            var testMessageMarshal = (TestMessageMarshal)Activator.GetObject(typeof(MessageMarshal.TestMessageMarshal), "ipc://test/MessageMarshal.TestMessageMarshal");
            while (true)
            {
                testMessageMarshal.SendMessage("DateTime.Now:" + System.DateTime.Now.ToString());
                Console.WriteLine("send message...");
                Thread.Sleep(2000);
            }

            /*或者下面的代码也可实现这个远程调用效果
             IpcChannel  channel = new IpcChannel();
             ChannelServices.RegisterChannel(channel, false);
            //注册通道 的 远程处理类型
            RemotingConfiguration.RegisterWellKnownClientType(typeof(MessageMarshal.TestMessageMarshal), "ipc://test/MessageMarshal.TestMessageMarshal");
            //创建消息实体
            MessageMarshal.TestMessageMarshal TestMessage = new MessageMarshal.TestMessageMarshal();
            while (true)
            {
                TestMessage.SendMessage("DateTime.Now:" + System.DateTime.Now.ToString());
                Console.WriteLine("send message...");
                Thread.Sleep(2000);
            }
            */
        }
    }
}

　　

原理的 这个 类TestMessageMarshal : MarshalByRefObject 是继承了MarshalByRefObject ，简单来讲，继承此类的对象可以跨越应用程序域边界被引用，甚至被远程引用.

如果在同一个项目进程里测试 创建服务端和客户端Channel或报 已经注册了某个Channel的错误。因为channel默认名字的原因。

这个时候可以用形如下的方式创建服务端和客户端Channel：

IpcServerChannel serverChannel = new IpcServerChannel("test");
IpcClientChannel channel = new IpcClientChannel("channel2", new BinaryClientFormatterSinkProvider());

还加不同的参数来创建可以如：

Hashtable ht = new Hashtable();
ht["portName"] = "TestChannel";
ht["name"] = "ipc";
ht["authorizedGroup"] = "Everyone";//可设置权限。
IpcChannel channel = new IpcChannel(ht,null,null);