UDP Socket客服示例

一、服务器端

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace UDPServer
{
class Program
    {
static void Main(string[] args)
        {
int recv;
byte[] data = new byte[1024]; 

//构建TCP 服务器

//得到本机IP，设置TCP端口号         
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any , 8001);
            Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram , ProtocolType.Udp);

//绑定网络地址
            newsock.Bind(ipep);

            Console.WriteLine("This is a Server, host name is {0}",Dns.GetHostName());

//等待客户机连接
            Console.WriteLine("Waiting for a client");

//得到客户机IP
            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
            EndPoint Remote = (EndPoint)(sender);
            recv = newsock.ReceiveFrom(data, ref Remote);
            Console .WriteLine ("Message received from {0}: ", Remote.ToString ());
            Console .WriteLine (Encoding .ASCII .GetString (data ,0,recv ));

//客户机连接成功后，发送欢迎信息
            string welcome = "Welcome ! ";

//字符串与字节数组相互转换
            data  = Encoding .ASCII .GetBytes (welcome );

//发送信息
            newsock .SendTo (data ,data.Length ,SocketFlags .None ,Remote );
while (true )
            {
                data =new byte [1024];
//发送接受信息
                recv =newsock.ReceiveFrom(data ,ref Remote);
                Console .WriteLine (Encoding .ASCII .GetString (data ,0,recv));
                newsock .SendTo (data ,recv ,SocketFlags .None ,Remote );
            }
        }

    }
}

二、客户端

using System;
UDP Socket客服示例 using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace UDPClient
}