闲着无聊，写了个简单的C/S Socket程序，功能很简单，服务器在9000端口监听socket接入，只要有接入，就发送"Welcome."消息给客户端。

代码分2块，server端：

class Program    {        static void Main(string[] args)        {            TcpListener lsner = new TcpListener(9000);            lsner.Start();            Console.WriteLine("started in port: 9000");            while (true)            {                TcpClient client=lsner.AcceptTcpClient();                Console.WriteLine("new client received. hashcode: {0}", client.GetHashCode());                ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessTcpClient), client);            }            Console.ReadKey();        }        private static void ProcessTcpClient(object state)        {            TcpClient client=state as TcpClient;            if(client==null)                Console.WriteLine("client is null");            NetworkStream ns=client.GetStream();            StreamWriter sw = new StreamWriter(ns);            sw.WriteLine("Welcome.");            sw.Flush();            sw.Close();            client.Close();        }

 

client端：

class Program    {        static void Main(string[] args)        {            IPAddress address = IPAddress.Parse("127.0.0.1");            IPEndPoint ep=new IPEndPoint(address, 9000);            TcpClient client = new TcpClient();            client.Connect(ep);            NetworkStream ns=client.GetStream();            StreamReader sr = new StreamReader(ns);            Console.WriteLine(sr.ReadToEnd());            sr.Close();            sr.Dispose();            ns.Close();            ns.Dispose();            client.Close();            Console.ReadKey();        }    }

 

运行效果图如下：