76 lines
2.4 KiB
C#
76 lines
2.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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using System.Windows.Forms;
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namespace UDPServer
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{
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public partial class Frm_Server : Form
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{
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UdpClient client;
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IPEndPoint endpoint;
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Dictionary<string, IPEndPoint> userinfo = new Dictionary<string, IPEndPoint>();
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public Frm_Server()
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{
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InitializeComponent();
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}
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private void Frm_Server_Load(object sender, EventArgs e)
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{
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client = new UdpClient(new IPEndPoint(IPAddress.Any, 25433));
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endpoint = new IPEndPoint(IPAddress.Any, 0);
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//启动客户端监听
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Thread t = new Thread(new ThreadStart(ClientThread));
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t.IsBackground = true;
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t.Start();
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}
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private void button_Click(object sender, EventArgs e)
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{
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foreach (var item in userinfo)
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{
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byte[] buf = Encoding.Default.GetBytes("用户: " + item.Key + " 消息: " + msg.Text);
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client.Send(buf, buf.Length, item.Value);
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}
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}
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private void ClientThread()
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{
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try
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{
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Console.WriteLine("服务器开始监听...");
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while (true)
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{
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byte[] buf = client.Receive(ref endpoint);
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string msg = Encoding.Default.GetString(buf);
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string[] info = msg.Split(' ');
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if (info.Length == 3)
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{
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string user = info[0];
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string ip = info[1];
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int port = int.Parse(info[2]);
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IPEndPoint addr = new IPEndPoint(IPAddress.Parse(ip), port);
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if (userinfo.ContainsKey(user))
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userinfo.Remove(user);
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userinfo.Add(user, addr);
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Console.WriteLine("用户: " + user + " 登录服务器 IP: " + ip + " 端口: " + port);
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}
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}
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}
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catch (Exception)
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{
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client.Close();
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}
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}
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}
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}
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