program.cs

一个用Socket写的客户端及服务器程序

//server端
using System;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
namespace Project1
{
    class Class2
    {
        static void Main()
        {
            try
            {
                int port = 2000;
                string host = "127.0.0.1";
                string recvStr = "";
                string End = "";
                IPAddress ip = IPAddress.Parse(host);
                IPEndPoint ipe = new IPEndPoint(ip, port);
                Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建一个Socket类
                s.Bind(ipe);//绑定2000端口
                s.Listen(0);//开始监听
                Console.WriteLine("Wait for connect..."); 
                Socket temp = s.Accept();//为新建连接创建新的Socket。
                while (End != "close")
                {
             
                    Console.WriteLine("Get a connect");
                    recvStr = "";
                    byte[] recvBytes = new byte[1024];
                    int bytes;
                    bytes = temp.Receive(recvBytes, recvBytes.Length, 0);//从客户端接受信息
                    recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);
                    Console.WriteLine("Server Get Message:{0}", recvStr);//把客户端传来的信息显示出来
                    End = recvStr;
  
            //    string sendStr = "Ok!Client Send Message Sucessful!";
             //   byte[] bs = Encoding.ASCII.GetBytes(sendStr);
            //    temp.Send(bs, bs.Length, 0);//返回客户端成功信息
               
               
               } 
                temp.Close();
                s.Close();
               
            }
            catch (ArgumentNullException e)
            {
                Console.WriteLine("ArgumentNullException: {0}", e);
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }
            Console.WriteLine("Press Enter to Exit");
            Console.ReadLine();
        }
    }
}