客户端和服务端之间的通信（UDP）
<div id="cnblogs_post_body">实现一个小的通信功能：客户端向服务端提交数据，然后服务端回执数据。一、新建一个控制台应用程序：Client。
<div class="cnblogs_code" >http://images.cnblogs.com/OutliningIndicators/ContractedBlock.gifhttp://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gifView Code <div id="cnblogs_code_open_56cfb138-6c91-4975-91ac-767a47b47df0" class="cnblogs_code_hide">using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net;using System.Net.Sockets;namespace Client{ class Program { static void Main(string[] args) { //创建一个Socket对象 Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9050); Console.Write("向服务端提交当前时间！\n"); string dt = DateTime.Now.ToString();//获取当前时间。 byte[] send = Encoding.ASCII.GetBytes(dt); //string message = Console.ReadLine();//发送客户端输入信息。 //byte[] send = Encoding.ASCII.GetBytes(message); s.SendTo(send, (EndPoint)ipep);//向服务器发送 int length; byte[] data = new byte[1024]; IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0); EndPoint Remote = (EndPoint)(sender); length = s.ReceiveFrom(data, ref Remote);//通过ReceiveFrom接受来自服务端的数据 Console.Write("从" + Remote.ToString() + "接收信息：\n服务器已接收到客户端发送时间"); string receive = Encoding.ASCII.GetString(data, 0, length); Console.WriteLine(receive); Console.ReadLine(); } }}
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