Winfrom 基于TCP的Socket 编程

基于TCP的Socket基础例子

服务端的代码

 public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }
         Socket clientSocket = null;
         int tiaoshu = ;

         private void Form1_Load(object sender, EventArgs e)
         {
             try
             {
                 this.txtPort.Text = "";
                 this.txtSend.Text = "服务端发送";

             }
             catch { }
         }

         //创建并监听
         private void listen()
         {
             try
             {
                 //获取服务器IP
                // clientSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);

                 //因为用的一台机器测试所以服务器的IP设置成了127.0.0.1，这里填写的是服务端的IP地址如：192.168.1.110
                 IPAddress HostIp = IPAddress.Parse("127.0.0.1");

                 //创建一个网络端点
                 IPEndPoint iep = new IPEndPoint(HostIp, Int32.Parse(this.txtPort.Text.Trim()));

                 //创建服务端服务端套接字
                 Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                 //将套接字与网络端点绑定
                 serverSocket.Bind(iep);

                 serverSocket.Listen();

                 clientSocket = serverSocket.Accept();

                 if(!clientSocket.Connected)
                 {
                     clientSocket=null;
                 }
                 if(clientSocket!=null)
                 {
                     tiaoshu = ;
                 }

             }
             catch { }

         }
         Thread threadList;
        // Socket clientSocket=null;
         private void btnStart_Click(object sender, EventArgs e)
         {
             try
             {
                 if (this.btnStart.Text == "启动服务")
                 {

                     this.btnStart.Text = "停止服务";

                     threadList = new Thread(new ThreadStart(listen));

                     threadList.Start();

                     timer1.Enabled = true;

                     //this.lblState.Text = "连接成功！";
                 }
                 else {
                     this.btnStart.Text = "启动服务";

                     timer1.Enabled = false;

                     threadList.Abort();
                     clientSocket.Shutdown(SocketShutdown.Both);
                     clientSocket.Close();

                     //this.lblState.Text = "连接失败！";

                 }
             }
             catch { }
         }

         private void timer1_Tick(object sender, EventArgs e)
         {
             try
             {
                 if (clientSocket != null)
                 {
                     if (clientSocket.Connected)
                     {
                         this.lblState.Text = "连接成功！";

                         byte[] receiveBytes = new byte[];

                         if (clientSocket.Poll(, SelectMode.SelectRead))
                         {
                             int successReceiveBytes = clientSocket.Receive(receiveBytes);
                             this.txtReceive.Text = "客户端" + clientSocket.RemoteEndPoint.ToString()
                                 + "\r\n" + "接收" + System.Text.Encoding.UTF8.GetString(receiveBytes, , successReceiveBytes);
                             this.txtReceive.SelectionLength = txtReceive.Text.Length;
                             this.txtReceive.ScrollToCaret();
                         }

                     }
                     else
                     {
                         this.lblState.Text = "连接失败！";
                     }
                 }

             }
             catch { }
         }

         private void btnSend_Click(object sender, EventArgs e)
         {
             try
             {
                 if(clientSocket==null)
                 {
                     this.lblState.Text = "连接失败";
                 }else
                 {
                     string sendMessage = this.txtSend.Text.Trim();
                     byte[] message = System.Text.Encoding.UTF8.GetBytes(sendMessage);
                     int successSendMessage = clientSocket.Send(message,message.Length,SocketFlags.None);

                 }

             }
             catch { }
         }
     }

客户端的代码

 public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }

         private void Form1_Load(object sender, EventArgs e)
         {
             this.txtIP.Text = "127.0.0.1";//服务端的IP地址，这里因为是服务端是本机写127.0.0.1，如服务端是192.168.1.110，这里应该写192.168.1.110
             this.txtPort.Text = "";//服务端发布的端口号
             this.txtSend.Text = "客户端发送";
         }

         Socket clientSocket;

         private void btnStart_Click(object sender, EventArgs e)
         {
             try
             {
                 IPAddress ip = IPAddress.Parse(this.txtIP.Text.Trim());

                 IPEndPoint iep = new IPEndPoint(ip,int.Parse(this.txtPort.Text.Trim()));

                 clientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);

                 clientSocket.Connect(iep);

                 clientSocket.ReceiveTimeout = ;

                 clientSocket.SendTimeout = ;

                 this.lblState.Text = "连接成功";

                 timer1.Enabled = true;

             }
             catch {
             }
         }

         private void timer1_Tick(object sender, EventArgs e)
         {
             try
             {
                 if (clientSocket != null)
                 {
                     if (clientSocket.Connected)
                     {
                         byte[] receiveSocket=new byte[];
                         if(clientSocket.Poll(,SelectMode.SelectRead))
                         {
                             int successSocket = clientSocket.Receive(receiveSocket);
                             if(successSocket!=)
                             {
                                 this.txtReceive.Text = "服务端" + System.Text.Encoding.UTF8.GetString(receiveSocket,,successSocket);
                                 this.txtReceive.SelectionStart = this.txtReceive.Text.Length;
                                 this.txtReceive.ScrollToCaret();
                             }
                         }
                     }
                 }
                 else {
                     this.lblState.Text = "连接失败！";
                 }

             }
             catch { }
         }

         private void btnSend_Click(object sender, EventArgs e)
         {
             try
             {
                 if(clientSocket!=null)
                 {
                     if(clientSocket.Connected)
                     {
                         string sendMessage = this.txtSend.Text.Trim();
                         byte[] sendBytes = System.Text.Encoding.UTF8.GetBytes(sendMessage);
                         int successSendBytes = clientSocket.Send(sendBytes,sendBytes.Length,SocketFlags.None);

                     }

                 }else{
                     this.lblState.Text="连接失败！";
                 }

             }
             catch { }
         }
     }

展示效果如下