c#socket通信，转载留自己学习用

using System;using System.Collections.Generic;using System.Linq;using System.Text;//添加Socket类using System.Net;using System.Net.Sockets; namespace SockeConsoleServer{    class Program    {        static void Main(string[] args)        {            int port = 2000;            string host = "127.0.0.1";             //创建终结点            IPAddress ip = IPAddress.Parse(host);            IPEndPoint ipe = new IPEndPoint(ip,port);              //创建Socket并开始监听             Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //创建一个Socket对象，如果用UDP协议，则要用SocketTyype.Dgram类型的套接字            s.Bind(ipe);    //绑定EndPoint对象(2000端口和ip地址)            s.Listen(0);    //开始监听             Console.WriteLine("等待客户端连接");             //接受到Client连接，为此连接建立新的Socket，并接受消息            Socket temp = s.Accept();   //为新建立的连接创建新的Socket            Console.WriteLine("建立连接");            string recvStr = "";            byte[] recvBytes = new byte[1024];            int bytes;            bytes = temp.Receive(recvBytes,recvBytes.Length,0); //从客户端接受消息            recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);             //给Client端返回信息            Console.WriteLine("server get message:{0}",recvStr);    //把客户端传来的信息显示出来            string sendStr = "ok!Client send message successful!";            byte[] bs = Encoding.ASCII.GetBytes(sendStr);            temp.Send(bs,bs.Length,0);  //返回信息给客户端            temp.Close();            s.Close();            Console.ReadLine();         }    }}

using System;using System.Collections.Generic;using System.Linq;using System.Text;//添加用于Socket的类using System.Net;using System.Net.Sockets; namespace SocketConsoleClient{    class Program    {        static void Main(string[] args)        {            try            {                int port = 2000;                string host = "127.0.0.1";                //创建终结点EndPoint                IPAddress ip = IPAddress.Parse(host);                IPEndPoint ipe = new IPEndPoint(ip, port);   //把ip和端口转化为IPEndPoint的实例                 //创建Socket并连接到服务器                Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);   //  创建Socket                Console.WriteLine("Connecting...");                c.Connect(ipe); //连接到服务器                 //向服务器发送信息                string sendStr = "Hello,this is a socket test";                byte[] bs = Encoding.ASCII.GetBytes(sendStr);   //把字符串编码为字节                 Console.WriteLine("Send message");                c.Send(bs, bs.Length, 0); //发送信息                 //接受从服务器返回的信息                string recvStr = "";                byte[] recvBytes = new byte[1024];                int bytes;                bytes = c.Receive(recvBytes, recvBytes.Length, 0);    //从服务器端接受返回信息                recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);                Console.WriteLine("client get message:{0}", recvStr);    //回显服务器的返回信息                 Console.ReadLine();                //一定记着用完Socket后要关闭                c.Close();            }            catch (ArgumentException e)            {                Console.WriteLine("argumentNullException:{0}", e);            }            catch (SocketException e)            {                Console.WriteLine("SocketException:{0}",e);            }        }    }}