using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.Net.Sockets;  namespace ConsoleApplication_socketClient {   class Program   {     static Socket clientSocket;     static void Main(string[] args)     {       //將網絡端點表示為IP地址和端口 用于socket偵聽時綁定        IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("*.*.*.*"), 3001); //填寫自己電腦的IP或者其他電腦的IP，如果是其他電腦IP的話需將ConsoleApplication_socketServer工程放在對應的電腦上。       clientSocket = new Socket(ipep.AddressFamily,SocketType.Stream,ProtocolType.Tcp);        //將Socket連接到服務器        try       {         clientSocket.Connect(ipep);         String outBufferStr;         Byte[] outBuffer = new Byte[1024];         Byte[] inBuffer = new Byte[1024];         while (true)         {           //發送消息            outBufferStr = Console.ReadLine();           outBuffer = Encoding.ASCII.GetBytes(outBufferStr);           clientSocket.Send(outBuffer, outBuffer.Length, SocketFlags.None);                      //接收服務器端信息                  clientSocket.Receive(inBuffer, 1024, SocketFlags.None);//如果接收的消息為空 阻塞 當前循環           Console.WriteLine("服務器說：");           Console.WriteLine(Encoding.ASCII.GetString(inBuffer));         }       }       catch       {         Console.WriteLine("服務未開啟！");         Console.ReadLine();       }     }   } } 

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Net; using System.Net.Sockets; using System.Threading;  namespace ConsoleApplication_socketServer {   class Program   {     static Socket serverSocket;     static Socket clientSocket;     static Thread thread;     static void Main(string[] args)     {       IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 3001);       serverSocket = new Socket(ipep.AddressFamily, SocketType.Stream, ProtocolType.Tcp);       serverSocket.Bind(ipep);       serverSocket.Listen(10);       while (true)       {         clientSocket = serverSocket.Accept();         thread = new Thread(new ThreadStart(doWork));         thread.Start();       }     }     private static void doWork()     {       Socket s = clientSocket;//客戶端信息       IPEndPoint ipEndPoint = (IPEndPoint)s.RemoteEndPoint;       String address = ipEndPoint.Address.ToString();       String port = ipEndPoint.Port.ToString();       Console.WriteLine(address + ":" + port + " 連接過來了");       Byte[] inBuffer = new Byte[1024];       Byte[] outBuffer = new Byte[1024];       String inBufferStr;       String outBufferStr;       try       {         while (true)         {           s.Receive(inBuffer, 1024, SocketFlags.None);//如果接收的消息為空 阻塞 當前循環           inBufferStr = Encoding.ASCII.GetString(inBuffer);           Console.WriteLine(address + ":" + port + "說:");           Console.WriteLine(inBufferStr);           outBufferStr = Console.ReadLine();           outBuffer = Encoding.ASCII.GetBytes(outBufferStr);           s.Send(outBuffer, outBuffer.Length, SocketFlags.None);         }       }       catch       {         Console.WriteLine("客戶端已關閉！");       }     }   } }