AgileEAS.NET SOA 中间件平台.Net Socket通信框架-简单例子-实现简单的服务端客户端消息应答

魏琼东

发布于 2018-01-12 15:01:31

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发布于 2018-01-12 15:01:31

文章被收录于专栏：魏琼东魏琼东魏琼东

一、AgileEAS.NET SOA中间件Socket/Tcp框架介绍

在文章AgileEAS.NET SOA 中间件平台Socket/Tcp通信框架介绍一文之中我们对AgileEAS.NET SOA中间Socket/Tcp框架进行了总体的介绍，我们知道

AgileEAS.NET SOA中间件Socket/Tcp框架是一套Socket通信的消息中间件：

二、简单例子-实现简单的服务器客户段消息应答

我们接下来实现一个简单的例子，例子的场景非常的简单，客户端向服务端发送一个请求消息，服务段收到消息之后显示消息内容，并对客户端发送一个应答消息，客户端收到应答消息之后显示这个应答消息，对于本例子，我们使用WinForm应用来实现。

三、一步一步实现

首先我们下载AgileEAS.NET SOA 中间件最新版本5.0/5.1，下载地址：http://www.smarteas.net/page/EAS_NET_Downloads.aspx。

首先我们打开VS2010或者VS2010创建一个类为项目Socket.Demo.Messages:

删除默认的Class1.cs，引用AgileEAS.NET SOA 中间件的EAS.MicroKernel.dll程序集文件，然后添加一个类请求消息类RequestMessage：

   1: [Serializable]
   2: [Message("14DB99D2-190C-48E9-879A-EA833247F24A", "请求消息")]
   3: public class RequestMessage:IMessage
   4: {
   5:     /// <summary>
   6:     /// 消息内容。
   7:     /// </summary>
   8:     public string Content
   9:     {
  10:         get;
  11:         set;
  12:     }
  13:  
  14:     public void Load(EAS.IO.BufferReader reader)
  15:     {
  16:         this.Content = reader.ReadString();   
  17:     }
  18:  
  19:     public void WriteTo(EAS.IO.BufferWriter writer)
  20:     {
  21:         writer.Write(this.Content);
  22:     }
  23: }

以上代码我们定义了一个请求消息，消息ID为"14DB99D2-190C-48E9-879A-EA833247F24A"，Load方法实现从消息读取器之中读出消息内容，WriteTo方法实现把消息内容写入消息编写器，转换为字节流供通信引擎进行收发，接下来我们再增加一个应答消息类ResponseMessage:

   1: [Serializable]
   2: [Message("D94C51C4-8423-4BF6-A011-184265BBA62C", "应答消息")]
   3: public class ResponseMessage : RequestMessage, IMessage
   4: {
   5: }

在本例子之中应答消息与请求消息其内容没有本质的区别，都是文本通信，所以就直接继承了RequestMessage，变更了MessageID和消息说明。

到此为止，我们已经完成了请求消息与应答消息的定义Socket.Demo.Messages项目结构下：

接下来我们来实现服务端程序，向解决方案添加一个Socket.Demo.Server的Windows窗体应用程序：

同样，我们要引用AgileEAS.NET SOA 中间件的EAS.MicroKernel.dll程序集文件，并且还要引用Socket.Demo.Messages项目，然后重命名Form1为MainForm，并做以下界面布局：

接下来我们向服务端加载请求消息的处理器RequestMessageHandler，用于服务端收到请求消息之后的处理动作：

   1: class RequestMessageHandler:AbstractMessageHandler<RequestMessage>
   2: {
   3:     public override void Process(NetSession context, uint instanceId, RequestMessage message)
   4:     {
   5:         //1.显示消息。
   6:         MainForm.Instance.ShowMessage(message);
   7:  
   8:         //2.向客户端回复一条应当消息。
   9:         string content = string.Format("{0}已收到，OK！", message.Content);
  10:         ResponseMessage responseMessage = new ResponseMessage { Content = content };
  11:         context.Reply(responseMessage);
  12:     }
  13: }

然后我们实现MainForm窗体的功能代码：

   1: using System;
   2: using System.Collections.Generic;
   3: using System.ComponentModel;
   4: using System.Data;
   5: using System.Drawing;
   6: using System.Linq;
   7: using System.Text;
   8: using System.Windows.Forms;
   9: using EAS.Sockets;
  10: using Socket.Demo.Messages;
  11:  
  12: namespace Socket.Demo.Server
  13: {
  14:     public partial class MainForm : Form
  15:     {
  16:         public static MainForm Instance = null;
  17:         private SocketServer m_SocketServer = null;
  18:  
  19:         public MainForm()
  20:         {
  21:             InitializeComponent();
  22:             Instance = this;
  23:  
  24:             //实例化对象。
  25:             this.m_SocketServer = new SocketServer();
  26:  
  27:             //端口号为6610
  28:             this.m_SocketServer.Port = 6610;
  29:  
  30:             //注册消息处理器。
  31:             this.m_SocketServer.AddHander<RequestMessage>(new RequestMessageHandler());
  32:  
  33:             this.m_SocketServer.ServerStarted += new EventHandler(m_SocketServer_ServerStarted);
  34:             this.m_SocketServer.ServerStopped+=new EventHandler(m_SocketServer_ServerStopped);
  35:         }
  36:  
  37:         void m_SocketServer_ServerStarted(object sender, EventArgs e)
  38:         {
  39:             this.btnStart.Enabled = false;
  40:             this.btnStop.Enabled = true;
  41:         }
  42:  
  43:         void m_SocketServer_ServerStopped(object sender, EventArgs e)
  44:         {
  45:             this.btnStart.Enabled = true;
  46:             this.btnStop.Enabled = false;
  47:         }
  48:  
  49:         internal void ShowMessage(Messages.RequestMessage message)
  50:         {
  51:             Action UI = () =>
  52:                 {
  53:                     this.tbMessage.AppendText(message.Content);
  54:                     this.tbMessage.AppendText("\r\n");
  55:                     this.tbMessage.ScrollToCaret();
  56:                 };
  57:  
  58:             this.Invoke(UI);
  59:         }
  60:  
  61:         private void btnStart_Click(object sender, EventArgs e)
  62:         {
  63:             if (this.m_SocketServer.ServerState == ServerState.Stoped)
  64:             {
  65:                 this.m_SocketServer.StartServer();
  66:             }
  67:         }
  68:  
  69:         private void btnStop_Click(object sender, EventArgs e)
  70:         {
  71:             if (this.m_SocketServer.ServerState != ServerState.Stoped)
  72:             {
  73:                 this.m_SocketServer.StopServer();
  74:             }
  75:         }
  76:     }
  77: }

其中代码this.m_SocketServer.AddHander<RequestMessage>(new RequestMessageHandler());完成向服务器注册请求消息的处理器对象，internal void ShowMessage(Messages.RequestMessage message)方法用于显示服务器收到的请求消息。

接下来我们来实现客户端程序，向解决方案添加一个Socket.Demo.Client的Windows窗体应用程序，同前面一样样，我们要引用AgileEAS.NET SOA 中间件的EAS.MicroKernel.dll程序集文件，并且还要引用Socket.Demo.Messages项目，然后重命名Form1为MainForm，并做以下界面布局：

接下来我们向客户端加载应答消息的处理器ResponseMessageHandler，用于客户端收到应答消息之后的处理动作：

   1: using System;
   2: using System.Collections.Generic;
   3: using System.Linq;
   4: using System.Text;
   5: using EAS.Sockets.Messages;
   6: using Socket.Demo.Messages;
   7: using EAS.Sockets;
   8:  
   9: namespace Socket.Demo.Client
  10: {
  11:     class ResponseMessageHandler : AbstractMessageHandler<ResponseMessage>
  12:     {
  13:         public override void Process(NetSession context, uint instanceId, ResponseMessage message)
  14:         {
  15:             //1.显示消息。
  16:             MainForm.Instance.ShowMessage(message);
  17:         }
  18:     }
  19: }

然后我们实现MainForm窗体的功能代码：

   1: using System;
   2: using System.Collections.Generic;
   3: using System.ComponentModel;
   4: using System.Data;
   5: using System.Drawing;
   6: using System.Linq;
   7: using System.Text;
   8: using System.Windows.Forms;
   9: using EAS.Sockets;
  10: using Socket.Demo.Messages;
  11:  
  12: namespace Socket.Demo.Client
  13: {
  14:     public partial class MainForm : Form
  15:     {
  16:         public static MainForm Instance = null;
  17:         SocketClient m_SocketClient;
  18:  
  19:         public MainForm()
  20:         {
  21:             InitializeComponent();
  22:             Instance = this;
  23:             this.m_SocketClient = new SocketClient();
  24:             this.m_SocketClient.IPAddress = "127.0.0.1";
  25:             this.m_SocketClient.Port = 6610;
  26:             this.m_SocketClient.AddHander<ResponseMessage>(new ResponseMessageHandler());
  27:  
  28:             this.m_SocketClient.Connected += new EventHandler(m_SocketClient_Connected);
  29:             this.m_SocketClient.Closed += new EventHandler(m_SocketClient_Closed);
  30:         }
  31:  
  32:         void m_SocketClient_Connected(object sender, EventArgs e)
  33:         {
  34:             this.btnConnect.Enabled = false;
  35:             this.btnClose.Enabled = true;
  36:             this.btnSend.Enabled = false;
  37:         }
  38:  
  39:         void m_SocketClient_Closed(object sender, EventArgs e)
  40:         {
  41:             this.btnConnect.Enabled = true;
  42:             this.btnClose.Enabled = false;
  43:             this.btnSend.Enabled = true;
  44:         }
  45:  
  46:         internal void ShowMessage(ResponseMessage message)
  47:         {
  48:             Action UI = () =>
  49:             {
  50:                 this.tbMessage.AppendText(message.Content);
  51:                 this.tbMessage.AppendText("\r\n");
  52:                 this.tbMessage.ScrollToCaret();
  53:             };
  54:  
  55:             this.Invoke(UI);
  56:         }
  57:  
  58:         private void btnConnect_Click(object sender, EventArgs e)
  59:         {
  60:             if (this.m_SocketClient.ClientState == ClientState.Closed)
  61:             {
  62:                 this.m_SocketClient.Connect();
  63:             }
  64:         }
  65:  
  66:         private void btnClose_Click(object sender, EventArgs e)
  67:         {
  68:             if (this.m_SocketClient.ClientState != ClientState.Closed)
  69:             {
  70:                 this.m_SocketClient.Connect();
  71:             }
  72:         }
  73:  
  74:         private void btnSend_Click(object sender, EventArgs e)
  75:         {
  76:             if (this.tbSend.Text.Trim().Length == 0)
  77:             {
  78:                 MessageBox.Show("不能发空消息");
  79:                 return;
  80:             }
  81:  
  82:             if (this.m_SocketClient.ClientState != ClientState.Closed)
  83:             {
  84:                 RequestMessage rm = new RequestMessage();
  85:                 rm.Content = this.tbSend.Text.Trim();
  86:                 this.m_SocketClient.Send(rm);
  87:             }
  88:         }
  89:     }
  90: }

OK，这个简单的例子我们已经开发完成了，接下来，我们来编译、测试一下这个例子！