谁有Socket广播的例子？？？

Question

Socket向指定的一批IP发送信息，只要这个功能就行了

Answer 1

简单的多人聊天(C#.Socket).
http://www.sohozu.com/2005/5-24/1305423866.Html

Answer 2

//**************发送端********************
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;namespace Socket广播发送端
{
    public partial class Form1 : Form
    {
        private IPEndPoint enLoacp;
        private Socket mySocket;
        private Thread Mythread;
        private byte[] sendbuff;
        public Form1()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)
        {
            IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName());
            enLoacp = new IPEndPoint(IPAddress.Broadcast, 9050);
            mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            mySocket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
            
            Mythread = new Thread(new ThreadStart(Recive));
            Mythread.Name = "a";
            Mythread.Start();
        }
        private void Recive()
        {
            try
            {
                while (true)
                {
                    try
                    {
                        sendbuff = Encoding.Default.GetBytes("现在时间:" + DateTime.Now.ToLongTimeString());
                        mySocket.SendTo(sendbuff, enLoacp);
                        Thread.Sleep(2000);
                    }
                    catch (Exception ex)
                    {                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

Answer 3

//********************接收端*********************
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace Socket广播
{
    public partial class Form1 : Form
    {
        private IPEndPoint enLoacp;
        private Socket mySocket;
        private Thread Mythread;
        private EndPoint ep;
        public Form1()
        {
            InitializeComponent();
        }        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            enLoacp = new IPEndPoint(IPAddress.Any, 9050);
            mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            mySocket.Bind(enLoacp);
            ep = (EndPoint)enLoacp;
            Mythread = new Thread(new ThreadStart(Recive));
            Mythread.Name = "a";
            Mythread.Start();
        }
        private void Recive()
        {
            try
            {
                while (true)
                {
                    try
                    {
                        if (mySocket == null)
                        {
                            Thread.Sleep(1000);
                            continue;
                        }
                        else
                        {
                            if (listBox1.Items.Count > 10)
                            {
                                listBox1.Items.Clear();
                            }
                            byte[] b=new byte[1024];
                            int size = mySocket.ReceiveFrom(b,ref ep);
                            string strbuff = Encoding.Default.GetString(b,0,size);
                            listBox1.Items.Add("收到广播消息:" + strbuff);
                            
                        }
                    }
                    catch(Exception ex)
                    { 
                    
                    }
                }
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (Mythread != null & Mythread.ThreadState != ThreadState.Unstarted && Mythread.ThreadState != ThreadState.Stopped)
            {
                Mythread.Abort();
            }
            if (mySocket != null)
            {
                mySocket.Close();
            }
        }
    }
}

Answer 4

MSDN自带的就有 自己去查一下UDPClient

Answer 5

用UDPClient进行收发才叫广播么？？
那Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp)这种形式也应该叫广播吧？