在J2ME客户端连续100次建立TCP连接并发送数据

类别:软件工程 点击:0 评论:0 推荐:

以下是客户端代码:
package testsocket;
//使用TCP协议一次性建立100次TCP连接
//本例的目的是试图测试建立TCP连接的速度是多少;
//从实验结果来看,建立连接的速度很快平均小于1秒,每次连接之间的间隔的平均时间也小于1秒;
//测试环境:花生壳动态域名解析,服务器端需运行服务程序;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;

public class Test extends MIDlet implements CommandListener{
  private static Test instance;
  Display display;
  Command exitCmd;
  Command connectCmd;
  Form result;
  String serverUrl="socket://zhang-yin.vicp.net:4040";
  String message;
  /** Constructor */
  public Test() {
    display=Display.getDisplay(this);
    result=new Form("Get message");
    exitCmd=new Command(".exit.",Command.EXIT,1);
    connectCmd=new Command("connected...",Command.SCREEN,1);
    result.addCommand(exitCmd);
    result.addCommand(connectCmd);
    result.setCommandListener(this);
  }

  /** Main method */
  public void startApp() {
    display.setCurrent(result);
  }

  /** Handle pausing the MIDlet */
  public void pauseApp() {
  }

  /** Handle destroying the MIDlet */
  public void destroyApp(boolean unconditional) {
  }

  /** Quit the MIDlet */
  public static void quitApp() {
    instance.destroyApp(true);
    instance.notifyDestroyed();
    instance = null;
  }

  public void commandAction(Command c, Displayable d) {
    if (c==exitCmd){
      destroyApp(true);
      notifyDestroyed();
    }
    else if (c==connectCmd){
      try{

         connect(serverUrl);
      }
      catch (Exception ex){}
    }
  }

  void connect(String url) throws IOException{

        try {
          for (int i = 0; i < 100; i++) {
            System.out.println("now:" + i);
            StreamConnection con = (StreamConnection) Connector.open(url);
            OutputStream os = con.openOutputStream();
            int data;
            StringBuffer sb = new StringBuffer();
            byte[] ff = new byte[12];
            ff = "1234567890".getBytes();
            os.write(ff);
            os.flush();
            System.out.println("send ok");
            if (os != null)
                     os.close();
             if (con != null)
                      con.close();
          }
        }
        finally
 {
         }

  }
}


以下是服务器端代码:

using System;
using System.Drawing ;
using System.Windows.Forms ;
using System.Data ;
using System.Net ;
using System.Net.Sockets ;
using System.Threading ;
using System.IO;

namespace TcpServer
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Server : System.Windows.Forms.Form
 {
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  public Server()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }


  private bool doIt=true;
  private Thread startServer ;
  TcpListener serverListener;
  TcpClient tcpClient;
  System.Net.Sockets.NetworkStream netStream;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.Button button2;
  private System.Windows.Forms.ListBox listBox1;
  private System.Windows.Forms.Button button3;
  int port=4040;


  #region Windows 窗体设计器生成的代码
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {
   this.button1 = new System.Windows.Forms.Button();
   this.button2 = new System.Windows.Forms.Button();
   this.listBox1 = new System.Windows.Forms.ListBox();
   this.button3 = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(32, 40);
   this.button1.Name = "button1";
   this.button1.Size = new System.Drawing.Size(64, 24);
   this.button1.TabIndex = 0;
   this.button1.Text = "开始服务";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // button2
   //
   this.button2.Location = new System.Drawing.Point(112, 40);
   this.button2.Name = "button2";
   this.button2.Size = new System.Drawing.Size(64, 24);
   this.button2.TabIndex = 1;
   this.button2.Text = "停止服务";
   this.button2.Click += new System.EventHandler(this.button2_Click);
   //
   // listBox1
   //
   this.listBox1.ItemHeight = 12;
   this.listBox1.Location = new System.Drawing.Point(32, 72);
   this.listBox1.Name = "listBox1";
   this.listBox1.Size = new System.Drawing.Size(344, 184);
   this.listBox1.TabIndex = 2;
   //
   // button3
   //
   this.button3.Location = new System.Drawing.Point(304, 40);
   this.button3.Name = "button3";
   this.button3.Size = new System.Drawing.Size(64, 24);
   this.button3.TabIndex = 3;
   this.button3.Text = "清空列表";
   this.button3.Click += new System.EventHandler(this.button3_Click);
   //
   // Server
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(400, 349);
   this.Controls.Add(this.button3);
   this.Controls.Add(this.listBox1);
   this.Controls.Add(this.button2);
   this.Controls.Add(this.button1);
   this.Name = "Server";
   this.Text = "Tcp服务器程序";
   this.Load += new System.EventHandler(this.Server_Load);
   this.ResumeLayout(false);

  }
  #endregion

  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Server());
  }

  public void StartListen()//侦听特定端口的用户请求
  {
   serverListener.Start(); //启动侦听
   while(doIt)//进入无限循环等待用户端连接
   {
    try
    {
     tcpClient=serverListener.AcceptTcpClient() ;//创建客户端连接对象
     netStream=tcpClient.GetStream() ;//得到网络流
        //BinaryReader br=new BinaryReader(netStream);
     StreamReader sr=new StreamReader(netStream);
     string buffer="";
     string received="";
     received+=sr.ReadLine();//读流中一行
     while(received.Length!=0)
     {
      buffer+=received;
      buffer+="\r\n";
      received=sr.ReadLine();
      if (received==null){received="";}
     }
     listBox1.Items.Add(buffer);//显示
    }
    catch(Exception re)
    {
     MessageBox.Show(re.Message);
    }
   } //while
   
   netStream.Close();
   tcpClient.Close();
  }

  public void run ( )
  {
   //开一个线程
   startServer = new Thread ( new ThreadStart ( StartListen ) ) ;
   //启动线程
   startServer.Start ( ) ;
  }

  private void button1_Click(object sender, System.EventArgs e)
  {
   //开始服务
   doIt=true;
   this.button2.Enabled=true;
   button1.Enabled=false;
   run();
  }

  private void button2_Click(object sender, System.EventArgs e)
  {
   //停止服务
   doIt=false;
   button1.Enabled=true;
   button2.Enabled=false;
   startServer.Abort();
   serverListener.Stop();
  }

  private void Server_Load(object sender, System.EventArgs e)
  {
   try
   {
    
    serverListener=new TcpListener(IPAddress.Any,port);//创建TcpListener对象实例
    
   }
   catch(Exception ex)
   {
    MessageBox.Show("Can‘t Start Server"+ex.Message);
    return;
   }
  }

  private void button3_Click(object sender, System.EventArgs e)
  {
   this.listBox1.Items.Clear();
  }

 }//end class server
}

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