Scoket编程

服务端代码：

class Program
    {
        static void Main(string[] args)
        {
            const int BufferSize = 8192;//缓存大小8192字节，可以存4096个汉字
            Console.WriteLine("Sever is running");
            IPAddress ip = IPAddress.Parse("127.0.0.1");//获取ip址
            TcpListener listener = new TcpListener(ip,8500);

            listener.Start();//开始监听
            Console.WriteLine("Start Listening");

            //do
            //{
        
            //获取一个连接，中断方法
            TcpClient remoteClient = listener.AcceptTcpClient();
            //打印连接的客户端信息
            Console.WriteLine("Client Connected!{0}<--{1}",remoteClient.Client.LocalEndPoint,remoteClient.Client.RemoteEndPoint);
            //获取流，并写入buffer中
            NetworkStream streamToClient = remoteClient.GetStream();
            byte[] buffer = new byte[BufferSize];
            int bytesRead = streamToClient.Read(buffer,0,BufferSize);//一直等待客户端传信息
            Console.WriteLine("Reading data,{0} bytes..",bytesRead);
            //获得请求的字符串
            string msg = Encoding.Unicode.GetString(buffer,0,bytesRead);
            Console.WriteLine("Received:{0}", msg);
                //转换成大写并发送
                msg = msg.ToUpper();
                buffer = Encoding.Unicode.GetBytes(msg);
                lock (streamToClient)
                {
                    streamToClient.Write(buffer,0,buffer.Length);
                }
                Console.WriteLine("Send:{0}",msg);
            //} while (true);
           
            Console.WriteLine("\n\n输入\"Q\"键退出。");
            ConsoleKey key;
            do
            {
                key = Console.ReadKey(true).Key;
            } while (key != ConsoleKey.Q);
        }
    }

客户端代码：

 class Program
    {
        static void Main(string[] args)
        {
            const int BufferSize = 8192;
            Console.WriteLine("Client Running...");
            TcpClient client;
            for (int i = 0; i < 5; i++)
            {
               
                try
                {
                      client = new TcpClient();
                    client.Connect("localhost", 8500);//与服务器连接
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                    return;
                }
                //打印连接到的服务器信息
                Console.WriteLine("Serevr Connect! {0}--->{1}", client.Client.LocalEndPoint, client.Client.RemoteEndPoint);
                NetworkStream streamToServer = client.GetStream();
                ConsoleKey key;
                Console.WriteLine("Menu:S-Send,X-Exit");
                do
                {
                    key = Console.ReadKey(true).Key;
                    if (key==ConsoleKey.S)
                    {
                        //获取输入的信息字符串
                        Console.WriteLine("输入信息");
                        string msg = Console.ReadLine();
                        //发送信息
                        byte[] buffer = Encoding.Unicode.GetBytes(msg);
                        streamToServer.Write(buffer,0,buffer.Length);
                        Console.WriteLine("Sent:{0}",msg);
                        int bytesRead;
                        buffer = new byte[BufferSize];
                        lock (streamToServer)
                        {
                            bytesRead = streamToServer.Read(buffer,0,BufferSize);
                        }
                        msg = Encoding.Unicode.GetString(buffer,0,bytesRead);
                        Console.WriteLine("Received:{0}",msg);
                    }

                } while (key !=ConsoleKey.X);
            }

         //   按Q退出
            Console.WriteLine("\n\n输入\"Q\"键退出");
            ConsoleKey keys;
            do
            {
                keys = Console.ReadKey(true).Key;
            } while (keys != ConsoleKey.Q);
        }
    }