socket 广播消息

在 做Socket通信时，了解了客户端向服务器发送消息的

再来整理服务器向客户端发送广播消息

服务器端：

using UnityEngine;
using System.Collections;
using System.Net;
using System .Net.Sockets;
using System .Threading;
using System.Text;


/*
author:miss li
use for;
*/
namespace LMQ{
public class Server : MonoBehaviour 
{
        Socket socket;
        IPEndPoint ipEnd;
        byte[] data;
        string hostname;

        void Init()
        {
            socket = new Socket (AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            ipEnd = new IPEndPoint (IPAddress.Broadcast, 8001);
            hostname = Dns.GetHostName ();
            data = Encoding.ASCII.GetBytes (hostname);
            socket.SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);
            Thread t = new Thread (BroadcastMessage);
            t.Start ();
        }

    void Awake()
    {
    
    }
        void Start () 
    {
            Init ();
    }
    
        void BroadcastMessage()
        {
            while (true) {
//                data = new byte[1024];
//                data = Encoding.ASCII.GetBytes (hostname);
                socket.SendTo (data, ipEnd);
                Thread.Sleep (2000);
            


            }
        }

        void BroadcastMessage(string hostname)
        {
            while (true) {
                data = new byte[1024];
                data = Encoding.ASCII.GetBytes (hostname);
                socket.SendTo (data, ipEnd);
                Thread.Sleep (2000);
            }
            
        }
        //void OnGUI()
        //{
        //    hostname = GUI.TextField(new Rect(100, 50, 60, 30), hostname);
        //    if (GUI.Button(new Rect(100, 90, 60, 30), "send"))
        //    {
        //        BroadcastMessage(hostname);
        //    }
        //}

       
}
}

客户端：

using UnityEngine;
using System.Collections;
using System .Net;
using System.Net.Sockets;
using System .Threading;
using System.Text;

/*
author:miss li
use for;
*/
namespace LMQ{
public class Client : MonoBehaviour 
{
        Socket socket;
        IPEndPoint ipEnd;
        EndPoint End;
        byte[] data;
        int recv;
        string stringdata;

        void Init()
        {
            socket = new Socket (AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            ipEnd = new IPEndPoint (IPAddress.Any, 8001);
            socket.Bind (ipEnd);
            End = (EndPoint)ipEnd;
            Thread t = new Thread (ReceiveData);
            t.Start ();

        }


        void ReceiveData()
        {
            data = new byte[1024];
            recv = socket.ReceiveFrom (data, ref End);
            stringdata = Encoding.ASCII.GetString (data, 0, recv);
            print ("received: " + stringdata + " form " + End.ToString ());
            socket.Close ();
        }
    
        void Start () 
    {
            Init ();
    }
    
        
}
}

当服务器端服务开启之后，客户端就会收到服务器端发送的广播消息，

同样的，服务端和客户端的端口号都需要保持一致