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Winfrom 基于TCP的Socket 编程

基于TCP的Socket基础例子

服务端的代码

  1 public partial class Form1 : Form
  2     {
  3         public Form1()
  4         {
  5             InitializeComponent();
  6         }
  7         Socket clientSocket = null;
  8         int tiaoshu = 1;
  9 
 10         private void Form1_Load(object sender, EventArgs e)
 11         {
 12             try
 13             {
 14                 this.txtPort.Text = "6666";
 15                 this.txtSend.Text = "服务端发送";
 16 
 17             }
 18             catch { }
 19         }
 20 
 21         //创建并监听
 22         private void listen()
 23         {
 24             try
 25             {
 26                 //获取服务器IP
 27                // clientSocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress, true);
 28 
 29                 //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
 30                 IPAddress HostIp = IPAddress.Parse("127.0.0.1");
 31 
 32                 //创建一个网络端点
 33                 IPEndPoint iep = new IPEndPoint(HostIp, Int32.Parse(this.txtPort.Text.Trim()));
 34 
 35                 //创建服务端服务端套接字
 36                 Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 37 
 38                 //将套接字与网络端点绑定
 39                 serverSocket.Bind(iep);
 40                 
 41                 serverSocket.Listen(10);
 42 
 43                 clientSocket = serverSocket.Accept();
 44 
 45                 if(!clientSocket.Connected)
 46                 {
 47                     clientSocket=null;
 48                 }
 49                 if(clientSocket!=null)
 50                 {
 51                     tiaoshu = 1;
 52                 }
 53 
 54 
 55             }
 56             catch { }
 57         
 58         }
 59         Thread threadList;
 60        // Socket clientSocket=null;
 61         private void btnStart_Click(object sender, EventArgs e)
 62         {
 63             try
 64             {
 65                 if (this.btnStart.Text == "启动服务")
 66                 {
 67 
 68                     this.btnStart.Text = "停止服务";
 69 
 70                     threadList = new Thread(new ThreadStart(listen));
 71 
 72                     threadList.Start();
 73 
 74                     timer1.Enabled = true;
 75 
 76                     //this.lblState.Text = "连接成功！";
 77                 }
 78                 else {
 79                     this.btnStart.Text = "启动服务";
 80 
 81                     timer1.Enabled = false;
 82 
 83                     threadList.Abort();
 84                     clientSocket.Shutdown(SocketShutdown.Both);
 85                     clientSocket.Close();
 86 
 87                     //this.lblState.Text = "连接失败！";
 88                     
 89                 
 90                 }
 91             }
 92             catch { }
 93         }
 94 
 95         private void timer1_Tick(object sender, EventArgs e)
 96         {
 97             try
 98             {
 99                 if (clientSocket != null)
100                 {
101                     if (clientSocket.Connected)
102                     {
103                         this.lblState.Text = "连接成功！";
104 
105                         byte[] receiveBytes = new byte[1024];
106 
107                         if (clientSocket.Poll(100, SelectMode.SelectRead))
108                         {
109                             int successReceiveBytes = clientSocket.Receive(receiveBytes);
110                             this.txtReceive.Text = "客户端" + clientSocket.RemoteEndPoint.ToString()
111                                 + "
" + "接收" + System.Text.Encoding.UTF8.GetString(receiveBytes, 0, successReceiveBytes);
112                             this.txtReceive.SelectionLength = txtReceive.Text.Length;
113                             this.txtReceive.ScrollToCaret();
114                         }
115 
116                     }
117                     else
118                     {
119                         this.lblState.Text = "连接失败！";
120                     }
121                 }
122 
123             }
124             catch { }
125         }
126 
127         private void btnSend_Click(object sender, EventArgs e)
128         {
129             try
130             {
131                 if(clientSocket==null)
132                 {
133                     this.lblState.Text = "连接失败";
134                 }else
135                 {
136                     string sendMessage = this.txtSend.Text.Trim();
137                     byte[] message = System.Text.Encoding.UTF8.GetBytes(sendMessage);
138                     int successSendMessage = clientSocket.Send(message,message.Length,SocketFlags.None);
139                 
140                 }
141 
142             }
143             catch { }
144         }
145     }

客户端的代码

 1 public partial class Form1 : Form
 2     {
 3         public Form1()
 4         {
 5             InitializeComponent();
 6         }
 7 
 8         private void Form1_Load(object sender, EventArgs e)
 9         {
10             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
11             this.txtPort.Text = "6666";//服务端发布的端口号
12             this.txtSend.Text = "客户端发送";
13         }
14 
15         Socket clientSocket;
16 
17         private void btnStart_Click(object sender, EventArgs e)
18         {
19             try
20             {
21                 IPAddress ip = IPAddress.Parse(this.txtIP.Text.Trim());
22 
23                 IPEndPoint iep = new IPEndPoint(ip,int.Parse(this.txtPort.Text.Trim()));
24 
25                 clientSocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
26 
27                 clientSocket.Connect(iep);
28 
29                 clientSocket.ReceiveTimeout = 3000;
30 
31                 clientSocket.SendTimeout = 3000;
32 
33                 this.lblState.Text = "连接成功";
34 
35                 timer1.Enabled = true;
36 
37             }
38             catch { 
39             }
40         }
41 
42         private void timer1_Tick(object sender, EventArgs e)
43         {
44             try
45             {
46                 if (clientSocket != null)
47                 {
48                     if (clientSocket.Connected)
49                     { 
50                         byte[] receiveSocket=new byte[1024];
51                         if(clientSocket.Poll(100,SelectMode.SelectRead))
52                         {
53                             int successSocket = clientSocket.Receive(receiveSocket);
54                             if(successSocket!=0)
55                             {
56                                 this.txtReceive.Text = "服务端" + System.Text.Encoding.UTF8.GetString(receiveSocket,0,successSocket);
57                                 this.txtReceive.SelectionStart = this.txtReceive.Text.Length;
58                                 this.txtReceive.ScrollToCaret();
59                             }
60                         }
61                     }
62                 }
63                 else {
64                     this.lblState.Text = "连接失败！";
65                 }
66 
67 
68             }
69             catch { }
70         }
71 
72         private void btnSend_Click(object sender, EventArgs e)
73         {
74             try
75             {
76                 if(clientSocket!=null)
77                 {
78                     if(clientSocket.Connected)
79                     {
80                         string sendMessage = this.txtSend.Text.Trim();
81                         byte[] sendBytes = System.Text.Encoding.UTF8.GetBytes(sendMessage);
82                         int successSendBytes = clientSocket.Send(sendBytes,sendBytes.Length,SocketFlags.None);
83                     
84                     }
85                 
86                 }else{
87                     this.lblState.Text="连接失败！";
88                 }
89 
90             }
91             catch { }
92         }
93     }

展示效果如下

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原文地址：https://www.cnblogs.com/liangwenchao-912/p/4948326.html