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 );
} } }
}
客户端：
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Text;
using
System.Net;
using
System.Net.Sockets;
namespace
UDPClient
{ class Program { static void Main(string[] args) { byte[] data = new byte[1024]; string input ,stringData; //构建TCP 服务器 Console.WriteLine("This is a Client, host name is {0}", Dns.GetHostName()); //设置服务IP，设置TCP端口号 IPEndPoint ipep = new IPEndPoint(IPAddress .Parse ("127.0.0.1") , 8001); //定义网络类型，数据连接类型和网络协议UDP Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); string welcome = "Hello! "; data = Encoding.ASCII.GetBytes(welcome); server.SendTo(data, data.Length, SocketFlags.None, ipep); IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0); EndPoint Remote = (EndPoint)sender; data = new byte[1024]; //对于不存在的IP地址，加入此行代码后，可以在指定时间内解除阻塞模式限制 //server.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 100); int recv = server.ReceiveFrom(data, ref Remote); Console.WriteLine("Message received from {0}: ", Remote.ToString()); Console.WriteLine(Encoding .ASCII .GetString (data,0,recv)); while (true) { input = Console .ReadLine (); if (input =="exit") break ; server .SendTo (Encoding .ASCII .GetBytes (input ),Remote ); data = new byte [1024]; recv = server.ReceiveFrom(data, ref Remote); stringData = Encoding.ASCII.GetString(data, 0, recv); Console.WriteLine(stringData); } Console .WriteLine ("Stopping Client."); server .Close (); } }}
本文转自94cool博客园博客，原文链接：http://www.cnblogs.com/94cool/archive/2011/09/03/2165807.html，如需转载请自行联系原作者
