using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Net.Sockets; using System.Net; using System.Threading; using System.IO; namespace WindowsFormsApplication1 { public partial class Form1 : Form { Dictionary<string, Socket> d = new Dictionary<string, Socket>(); public Form1() { InitializeComponent(); } Socket so; private void button1_Click(object sender, EventArgs e) { string str = this.textBox1.Text.Trim(); Byte[] buf = System.Text.Encoding.UTF8.GetBytes(str); //Byte[] buffernew = new Byte[buf.Length + 1]; //buffernew[0] = 0; //int i = 1; //foreach (byte a in buf) //{ // buffernew[i] = a; // i++; //} List<byte> list = new List<byte>(); list.Add(0); list.AddRange(buf); byte[] buffernew = list.ToArray(); d[comboBox1.SelectedItem.ToString()].Send(buffernew); //a.Send(buf); } private void button2_Click(object sender, EventArgs e) { string id = this.ip.Text; int port = Convert.ToInt32(this.port.Text); IPAddress ip = IPAddress.Parse(id); IPEndPoint ports = new IPEndPoint(ip,port); so = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp); so.Bind(ports); so.Listen(10); Thread d = new Thread(client); d.IsBackground = true; d.Start(so); } public void listin(string msg) { this.textBox2.AppendText(msg + " "); } //public void ceshi() //{ // while (true) // { // Socket ce = so.Accept(); // listin(ce.RemoteEndPoint.ToString()+"连接成功"); // Thread ax = new Thread(client); // ax.Start(ce); // } //} public void client(object o) { Socket s = o as Socket; while (true) { Socket a = s.Accept(); d.Add(a.RemoteEndPoint.ToString(), a); this.comboBox1.Items.Add(a.RemoteEndPoint.ToString()); listin(a.RemoteEndPoint.ToString() + "连接成功"); Thread th = new Thread(recevie); th.IsBackground = false; th.Start(a); } } void recevie(object o) { Socket a = o as Socket; while (true) { Byte[] buffer = new Byte[1024 * 1024 * 3]; int t = a.Receive(buffer); if (t == 0) { break; } string str = Encoding.UTF8.GetString(buffer, 0, t); listin(a.RemoteEndPoint.ToString() + ":" + str); } } private void Form1_Load(object sender, EventArgs e) { Control.CheckForIllegalCrossThreadCalls = false; } private void button3_Click(object sender, EventArgs e) { OpenFileDialog open = new OpenFileDialog();//创建对话框 open.InitialDirectory = @"C:Documents and SettingsAll Users桌面"; //设置对话框路径 open.Title = "对话框1"; //对话框标题 open.Filter = "所有文件|*.*"; open.Multiselect = true; //多选 open.ShowDialog(); //打开对话框 string paths = open.FileName; //读取文件的全路径 if (paths == "") return; this.textBox3.Text = paths; } private void button4_Click(object sender, EventArgs e) { string path = this.textBox3.Text; using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read)) { byte[] bytes = new byte[1024 * 1024 * 5]; int r = fs.Read(bytes, 0, bytes.Length); List<byte> list = new List<byte>(); list.Add(1); list.AddRange(bytes); byte[] buffernew = list.ToArray(); d[comboBox1.SelectedItem.ToString()].Send(buffernew,0,r+1,SocketFlags.None); } } private void button5_Click(object sender, EventArgs e) { byte[] buf = new byte[1]; buf[0] = 2; List<byte> list = new List<byte>(); list.Add(2); list.AddRange(buf); byte[] buffernew = list.ToArray(); d[comboBox1.SelectedItem.ToString()].Send(buffernew); } } }