winform.cs代码 client端代码 见下:
这是客户端代码:
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.Net; 8 using System.Net.Sockets; 9 using System.Text; 10 using System.Threading; 11 using System.Threading.Tasks; 12 using System.Windows.Forms; 13 14 namespace TcpMsgClient 15 { 16 public partial class FrmClient : Form 17 { 18 public FrmClient() 19 { 20 InitializeComponent(); 21 //关闭对文本框的非法线程操作检查 22 TextBox.CheckForIllegalCrossThreadCalls = false; 23 } 24 //创建 1个客户端套接字 和1个负责监听服务端请求的线程 25 Socket socketClient = null; 26 Thread threadClient = null; 27 28 /// <summary> 29 /// 连接服务端事件 30 /// </summary> 31 /// <param name="sender"></param> 32 /// <param name="e"></param> 33 private void btnListenServer_Click(object sender, EventArgs e) 34 { 35 //定义一个套字节监听 包含3个参数(IP4寻址协议,流式连接,TCP协议) 36 socketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); 37 //需要获取文本框中的IP地址 38 IPAddress ipaddress = IPAddress.Parse(this.txtIP.Text.Trim()); 39 //将获取的ip地址和端口号绑定到网络节点endpoint上 40 IPEndPoint endpoint = new IPEndPoint(ipaddress, int.Parse(this.txtPort.Text.Trim())); 41 //这里客户端套接字连接到网络节点(服务端)用的方法是Connect 而不是Bind 42 try 43 { 44 socketClient.Connect(endpoint); 45 this.txtMsg.AppendText("客户端连接服务端成功！" + " "); 46 this.btnListenServer.Enabled = false; 47 //创建一个线程 用于监听服务端发来的消息 48 threadClient = new Thread(RecMsg); 49 //将窗体线程设置为与后台同步 50 threadClient.IsBackground = true; 51 //启动线程 52 threadClient.Start(); 53 } 54 catch (Exception ex) { 55 this.txtMsg.AppendText("远程服务端断开，连接失败！" + " "); 56 } 57 } 58 59 /// <summary> 60 /// 接收服务端发来信息的方法 61 /// </summary> 62 private void RecMsg() 63 { 64 while (true) //持续监听服务端发来的消息 65 { 66 try 67 { 68 //定义一个1M的内存缓冲区 用于临时性存储接收到的信息 69 byte[] arrRecMsg = new byte[1024 * 1024]; 70 //将客户端套接字接收到的数据存入内存缓冲区, 并获取其长度 71 int length = socketClient.Receive(arrRecMsg); 72 //将套接字获取到的字节数组转换为人可以看懂的字符串 73 string strRecMsg = Encoding.UTF8.GetString(arrRecMsg, 0, length); 74 //将发送的信息追加到聊天内容文本框中 75 txtMsg.AppendText("服务端 " + GetCurrentTime() + " " + strRecMsg + " "); 76 } 77 catch (Exception ex) { 78 this.txtMsg.AppendText("远程服务器已中断连接！"+" "); 79 this.btnListenServer.Enabled = true; 80 break; 81 } 82 } 83 } 84 85 /// <summary> 86 /// 发送字符串信息到服务端的方法 87 /// </summary> 88 /// <param name="sendMsg">发送的字符串信息</param> 89 private void ClientSendMsg(string sendMsg) 90 { 91 try { 92 //将输入的内容字符串转换为机器可以识别的字节数组 93 byte[] arrClientSendMsg = Encoding.UTF8.GetBytes(sendMsg); 94 //调用客户端套接字发送字节数组 95 socketClient.Send(arrClientSendMsg); 96 //将发送的信息追加到聊天内容文本框中 97 txtMsg.AppendText("天涯 " + GetCurrentTime() + " " + sendMsg + " "); 98 } 99 catch(Exception ex){ 100 this.txtMsg.AppendText("远程服务器已中断连接,无法发送消息！" + " "); 101 } 102 } 103 104 private void btnSendMsg_Click(object sender, EventArgs e) 105 { 106 //调用ClientSendMsg方法 将文本框中输入的信息发送给服务端 107 ClientSendMsg(this.txtClientSendMsg.Text.Trim()); 108 this.txtClientSendMsg.Clear(); 109 } 110 111 private void txtClientSendMsg_KeyDown(object sender, KeyEventArgs e) 112 { 113 //当光标位于文本框时 如果用户按下了键盘上的Enter键 114 if (e.KeyCode == Keys.Enter) 115 { 116 //则调用客户端向服务端发送信息的方法 117 ClientSendMsg(this.txtClientSendMsg.Text.Trim()); 118 this.txtClientSendMsg.Clear(); 119 } 120 } 121 122 /// <summary> 123 /// 获取当前系统时间的方法 124 /// </summary> 125 /// <returns>当前时间</returns> 126 private DateTime GetCurrentTime() 127 { 128 DateTime currentTime = new DateTime(); 129 currentTime = DateTime.Now; 130 return currentTime; 131 } 132 } 133 }