C#：一个增强的TcpClient（*）客户端演示程序及源代码下载

时间：2024-05-30 17:09:29

增强功能：

  1. 独立通信线程
  2. AES 256位数据加密传输

下载地址：

TcpClientPlus.zip

演示程序界面：

C#：一个增强的TcpClient（*）客户端演示程序及源代码下载

演示程序源代码：

using System; using System.Net.Sockets; using System.Windows.Forms; using Splash.Net.Sockets; using Splash.Windows.Forms; namespace RunClient { public partial class Form1 : Form { /// <summary> /// TCP连接客户端 /// </summary> private TcpClientPlus tcpClient; public Form1() { InitializeComponent(); } // 建立连接 private void button_Connect_Click(object sender, EventArgs e) { if (tcpClient == null) { try { // 建立Tcp连接 tcpClient = new TcpClientPlus(textBox_IP.Text, Convert.ToInt32(textBox_Port.Text)); button_Connect.Text = "断开连接"; MessageBoxPlus.Show(this, "建立连接成功！", "信息"); } catch { MessageBoxPlus.Show(this, "建立连接失败！", "信息"); button_Send.Enabled = false; // 发送按钮失效 } } else { tcpClient.Close(); tcpClient = null; button_Connect.Text = "建立连接"; MessageBoxPlus.Show(this, "断开连接成功！", "信息"); } } // 派发任务 private void button_Send_Click(object sender, EventArgs e) { if (tcpClient == null || !tcpClient.Connected) { MessageBoxPlus.Show(this, "连接已中断，请重新建立连接！", "信息"); return; } // 发送按钮失效 button_Send.Enabled = false; if (String.IsNullOrEmpty(textBox_Command.Text)) return; // 设置通信** tcpClient.SecretKey = textBox_SecretKey.Text; // 派发任务 if (!tcpClient.ThreadTaskAllocation(HandleClientComm)) { MessageBoxPlus.Show(this, "通信信道忙！", "信息"); } } // 清空列表 private void button_Clear_Click(object sender, EventArgs e) { textBox_Notes.Clear(); } private void textBox_Command_TextChanged(object sender, EventArgs e) { if (tcpClient != null) { if (!String.IsNullOrEmpty(textBox_Command.Text)) { button_Send.Enabled = true; } } } // 窗体关闭 private void Form1_FormClosing(object sender, FormClosingEventArgs e) { if (tcpClient != null) { tcpClient.Close(); } } // 处理通信 private void HandleClientComm(object sender, EventArgs e) { TcpClientPlus client = sender as TcpClientPlus; if (client != null) { try { String Command = GetCommand(); String Answer; client.Query(Command, out Answer); SetNote(Command + "\r\n"); SetNote(Answer + "\r\n\r\n"); } catch (Exception ex) { Type type = ex.GetType(); if (type == typeof(SocketException) || type == typeof(System.IO.IOException)) { // 连接中断 client.Close(); MessageBoxPlus.Show(this, "连接中断！", "信息"); } else { SetNote("操作失败异常原因：" + type.Name + "\r\n\r\n"); } } } } // 对 Windows 窗体控件进行线程安全调用 private void SetNote(String text) { if (textBox_Notes.InvokeRequired) { textBox_Notes.BeginInvoke(new Action<String>((msg) => { textBox_Notes.AppendText(msg); }), text); } else { textBox_Notes.AppendText(text); } } // 对 Windows 窗体控件进行线程安全调用 private String GetCommand() { if (textBox_Command.InvokeRequired) { return (String)textBox_Command.Invoke(new Func<String>(() => { return textBox_Command.Text; })); } else { return textBox_Command.Text; } } } }


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