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：
