C#:Socket通信

Server代码

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using System; using System.Collections.Generic; using System.Linq; using System.Text; //添加Socket类 using System.Net; using System.Net.Sockets;   namespace SockeConsoleServer {     class Program     {         static void Main(string[] args)         {             int port = 2000;             string host = "127.0.0.1";               //创建终结点             IPAddress ip = IPAddress.Parse(host);             IPEndPoint ipe = new IPEndPoint(ip,port);               //创建Socket并开始监听               Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); //创建一个Socket对象，如果用UDP协议，则要用SocketTyype.Dgram类型的套接字             s.Bind(ipe);    //绑定EndPoint对象(2000端口和ip地址)             s.Listen(0);    //开始监听               Console.WriteLine("等待客户端连接");               //接受到Client连接，为此连接建立新的Socket，并接受消息             Socket temp = s.Accept();   //为新建立的连接创建新的Socket             Console.WriteLine("建立连接");             string recvStr = "";             byte[] recvBytes = new byte[1024];             int bytes;             bytes = temp.Receive(recvBytes,recvBytes.Length,0); //从客户端接受消息             recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);               //给Client端返回信息             Console.WriteLine("server get message:{0}",recvStr);    //把客户端传来的信息显示出来             string sendStr = "ok!Client send message successful!";             byte[] bs = Encoding.ASCII.GetBytes(sendStr);             temp.Send(bs,bs.Length,0);  //返回信息给客户端             temp.Close();             s.Close();             Console.ReadLine();           }     } } Client代码：   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 using System; using System.Collections.Generic; using System.Linq; using System.Text; //添加用于Socket的类 using System.Net; using System.Net.Sockets;   namespace SocketConsoleClient {     class Program     {         static void Main(string[] args)         {             try             {                 int port = 2000;                 string host = "127.0.0.1";                 //创建终结点EndPoint                 IPAddress ip = IPAddress.Parse(host);                 IPEndPoint ipe = new IPEndPoint(ip, port);   //把ip和端口转化为IPEndPoint的实例                   //创建Socket并连接到服务器                 Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);   //  创建Socket                 Console.WriteLine("Connecting...");                 c.Connect(ipe); //连接到服务器                   //向服务器发送信息                 string sendStr = "Hello,this is a socket test";                 byte[] bs = Encoding.ASCII.GetBytes(sendStr);   //把字符串编码为字节                   Console.WriteLine("Send message");                 c.Send(bs, bs.Length, 0); //发送信息                   //接受从服务器返回的信息                 string recvStr = "";                 byte[] recvBytes = new byte[1024];                 int bytes;                 bytes = c.Receive(recvBytes, recvBytes.Length, 0);    //从服务器端接受返回信息                 recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);                 Console.WriteLine("client get message:{0}", recvStr);    //回显服务器的返回信息                   Console.ReadLine();                 //一定记着用完Socket后要关闭                 c.Close();             }             catch (ArgumentException e)             {                 Console.WriteLine("argumentNullException:{0}", e);             }             catch (SocketException e)             {                 Console.WriteLine("SocketException:{0}",e);             }         }     } }