C#：一个增强的TcpListener（*）服务器演示程序及源代码下载

增强功能：

1. 独立线程侦听连接请求
2. 线程池处理连接通信
3. AES 256位数据加密传输

下载地址：

TcpClientPlus.zip

演示程序界面：

演示程序源代码：

using System; using System.Net; using System.Net.Sockets; using System.Windows.Forms; using Splash.Net.Sockets; using Splash.Windows.Forms; namespace RunServer { public partial class Form1 : Form { private TcpListenerPlus Server; public Form1() { InitializeComponent(); } private void button_Start_Click(object sender, EventArgs e) { if (Server == null) { try { Server = new TcpListenerPlus(IPAddress.Parse(textBox_IP.Text), Convert.ToInt32(textBox_Port.Text)); Server.OnThreadTaskRequest += new TcpListenerPlus.ThreadTaskRequest(GetAnswer); ((Button)sender).Text = "关闭服务器"; } catch (Exception) { if (Server != null) { Server.Stop(); Server = null; } MessageBoxPlus.Show(this, "启动服务器失败！", "信息"); } } else { Server.Stop(); Server = null; ((Button)sender).Text = "启动服务器"; } } private void button_Clear_Click(object sender, EventArgs e) { textBox_Notes.Clear(); } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { if (Server != null) { Server.Stop(); } } private void GetAnswer(object sender, EventArgs e) { TcpClient tcpClient = (TcpClient)sender; using (NetworkStreamPlus Stream = new NetworkStreamPlus(tcpClient.GetStream())) { // 调整接收缓冲区大小 Stream.ReceiveBufferSize = tcpClient.ReceiveBufferSize; Stream.SecretKey = GetSecretKey(); // 加密密钥 while (true) { try { // 获取查询内容 String Question; Stream.Read(out Question); // 返回查询结果 String Answer = Question.ToUpper(); Stream.Write(Answer); SetText(Question + "\r\n"); SetText(Answer + "\r\n\r\n"); } catch (Exception ex) { Type type = ex.GetType(); if (type == typeof(TimeoutException)) { // 超时异常，不中断连接 SetText("数据超时失败！\r\n\r\n"); } else { // 仍旧抛出异常，中断连接 SetText("中断连接异常原因：" + type.Name + "\r\n\r\n"); throw ex; } } } } } // 对 Windows 窗体控件进行线程安全调用 private String GetSecretKey() { if (textBox_SecretKey.InvokeRequired) { return (String)textBox_SecretKey.Invoke(new Func<String>(() => { return textBox_SecretKey.Text; })); } else { return textBox_SecretKey.Text; } } // 对 Windows 窗体控件进行线程安全调用 private void SetText(String text) { if (textBox_Notes.InvokeRequired) { textBox_Notes.BeginInvoke(new Action<String>((msg) => { textBox_Notes.AppendText(msg); }), text); } else { textBox_Notes.AppendText(text); } } } }