using System;

 using System.Net;                     //网络库

 using System.Net.Sockets;       　 　 //网络中的socket库

 using System.Text;                   //文本处理库

 using System.Threading;          　  //多线程

 //初始化服务器.

        static void IniteServer()

        {

            //生产一个新的Socket作为server

            Socket server = new Socket(AddressFamily.InterNetwork,          //局域网.

                                                 SocketType.Stream,         //流Socket.

                                                 ProtocolType.Tcp);         //协议.

            //定义一个终端.  IP地址相当去我们要注册的电话号码，客户打这个电话就可以联系到餐厅.

            //后面的是端口号，其实就相当于是我们客户部的分机号码啦.

            IPEndPoint _endPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), );

            //绑定终端.

            server.Bind(_endPoint);

            //监听.   开始接收客户的电话.

            server.Listen();

            Console.WriteLine("Server is OK! Waiting for connected");

            //重复接收客户端连接.       我们需要同时接听很多客户的电话对吧~

            while (true)

            {

                //阻塞方法，线程休眠1.5s

                Thread.Sleep();

                //服务器上生成一个客户端来处理客户端的信息，         也就是如果有客户打电话过来，就找一个接线员来为这个客户服务.

                Socket client = server.Accept();

                Console.WriteLine ("Someone connected: " + client.LocalEndPoint.ToString());

                //重复接收客户端的信息.

                while (true) {

                    Thread.Sleep();

                    //接收信息的长度1kb

                    byte[] buffer = new byte[];

                    //接收的实际长度.

                    int lenght = client.Receive(buffer);

                    //将接收到的二进制信息转换成字符串.

                    string msg = Encoding.Default.GetString(buffer, , lenght);

                    Console.WriteLine ("client: " + msg);

                }

            }

        }

        public static void Main(string[] args)

        {

            //开启新线程来初始化服务器.

            Thread newServer = new Thread(IniteServer);

            //开启线程.

            newServer.Start();

        }

         public static void Main(string[] args)

         {

             Thread newClient = new Thread(() => {

                 Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                 IPEndPoint _endPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), );

                 //连接终端

                 client.Connect(_endPoint);

                 while (true) {

                     Thread.Sleep();

                     Console.WriteLine ("Please write a message:");

                     //阻塞方法，读取用户输入的信息.

                     string msg = Console.ReadLine();

                     //将信息转换为二进制，并发送信息.

                     byte[] buffer = Encoding.Default.GetBytes(msg);

                     client.Send(buffer);

                 }

             });

             newClient.Start();

         }