1 服务端
  2 
  3 using System;
  4 using System.Collections.Generic;
  5 using System.Text;
  6 using System.Net;
  7 using System.Net.Sockets;
  8 
  9 namespace SocketSer
 10 {
 11    
 12     class Program
 13     {
 14         [STAThread]
 15 
 16         static void Main(string[] args)
 17         {
 18             int recv;
 19             byte[] data = new byte[1024];
 20             IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
 21             Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 22             newsock.Bind(ipep);
 23             newsock.Listen(10);
 24             Console.WriteLine("等待客户端连接中。。。");
 25             Socket client = newsock.Accept();
 26             IPEndPoint clientip = (IPEndPoint)client.RemoteEndPoint;
 27             Console.WriteLine("已连接的客户端：" + clientip.Address + ",端口" + clientip.Port);
 28              string welcome="welcome here!";
 29             data=Encoding.ASCII.GetBytes(welcome);
 30             client.Send(data,data.Length,SocketFlags.None);//发送信息
 31             while(true)
 32             {//用死循环来不断的从客户端获取信息
 33                 data=new byte[1024];
 34                 recv=client.Receive(data);
 35                 Console.WriteLine("recv="+recv);
 36                 if (recv==0)//当信息长度为0，说明客户端连接断开
 37                     break;
 38                 Console.WriteLine(Encoding.ASCII.GetString(data,0,recv));
 39                 client.Send(data,recv,SocketFlags.None);
 40             }
 41             Console.WriteLine("已断开从"+clientip.Address+"的连接。" );
 42             client.Close();
 43             newsock.Close();
 44 
 45         }
 46     }
 47 }
 48 
 49 客户端
 50 
 51 using System;
 52 using System.Collections.Generic;
 53 using System.Text;
 54 using System.Net;
 55 using System.Net.Sockets;
 56 
 57 namespace SocketCli
 58 {
 59     class Program
 60     {
 61                [STAThread]
 62         static void Main(string[] args)
 63         {
 64             //
 65             // TODO: 在此处添加代码以启动应用程序
 66             //
 67             byte[] data = new byte[1024];
 68             Socket newclient=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
 69             //Console.Write("请输入服务器");
 70             //string ipadd=Console.ReadLine();
 71             //Console.WriteLine();
 72             //Console.Write("please input the server port:");
 73             //int port=Convert.ToInt32(Console.ReadLine());
 74             IPEndPoint ie=new IPEndPoint(IPAddress.Parse("192.168.1.2"),9050);//服务器的IP和端口
 75             try
 76             {
 77                 //因为客户端只是用来向特定的服务器发送信息，所以不需要绑定本机的IP和端口。不需要监听。
 78                 newclient.Connect(ie);
 79             }
 80             catch(SocketException e)
 81             {
 82                 Console.WriteLine("未连接服务器");
 83                 Console.WriteLine(e.ToString());
 84                 Console.ReadLine();
 85                 return;
 86             }
 87             int recv = newclient.Receive(data);
 88             string stringdata=Encoding.ASCII.GetString(data,0,recv);
 89             Console.WriteLine(stringdata);
 90             while(true)
 91             {
 92                 string input=Console.ReadLine();
 93                 if(input=="exit")
 94                     break;
 95                 newclient.Send(Encoding.ASCII.GetBytes(input));
 96                 data=new byte[1024];
 97                 recv=newclient.Receive(data);
 98                 stringdata=Encoding.ASCII.GetString(data,0,recv);
 99                 Console.WriteLine(stringdata);
100             }
101             Console.WriteLine("disconnect from sercer");
102             newclient.Shutdown(SocketShutdown.Both);
103             newclient.Close();
104 
105         }
106     }
107 }