这个例子只是简单实现了如何使用 Socket 类实现面向连接的通信。
注意:此例子的目的只是为了说明用套接字写程序的大概思路,而不是实际项目中的使用程序。在这个例子中,实际上还有很多问题没有解决,如消息边界问题、端口号是否被占用、消息命令的解析问题等。。
下面是两个程序的代码,(两个程序均为控制台程序)
先发服务端的(Server)完整代码如下:
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using System.Net.Sockets; using System.Net; using System.Threading; |
完整代码如下:
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namespace SocketServer { class Program { private static byte [] result = new byte [1024]; private static int myProt = 8885; //端口 static Socket serverSocket; static void Main( string [] args) { //服务器IP地址 IPAddress ip = IPAddress.Parse( "127.0.0.1" ); serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); serverSocket.Bind( new IPEndPoint(ip, myProt)); //绑定IP地址:端口 serverSocket.Listen(10); //设定最多10个排队连接请求 Console.WriteLine( "启动监听{0}成功" , serverSocket.LocalEndPoint.ToString()); //通过Clientsoket发送数据 Thread myThread = new Thread(ListenClientConnect); myThread.Start(); Console.ReadLine(); } /// <summary> /// 监听客户端连接 /// </summary> private static void ListenClientConnect() { while ( true ) { Socket clientSocket = serverSocket.Accept(); clientSocket.Send(Encoding.ASCII.GetBytes( "Server Say Hello" )); Thread receiveThread = new Thread(ReceiveMessage); receiveThread.Start(clientSocket); } } /// <summary> /// 接收消息 /// </summary> /// <param name="clientSocket"></param> private static void ReceiveMessage( object clientSocket) { Socket myClientSocket = (Socket)clientSocket; while ( true ) { try { //通过clientSocket接收数据 int receiveNumber = myClientSocket.Receive(result); Console.WriteLine( "接收客户端{0}消息{1}" , myClientSocket.RemoteEndPoint.ToString(), Encoding.ASCII.GetString(result, 0, receiveNumber)); } catch (Exception ex) { Console.WriteLine(ex.Message); myClientSocket.Shutdown(SocketShutdown.Both); myClientSocket.Close(); break ; } } } } } |
以上是服务端(server)的完整代码。
客户端(Client)的完整代码如下:
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using System.Net; using System.Net.Sockets; using System.Threading; |
完整代码:
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namespace SocketClient { class Program { private static byte [] result = new byte [1024]; static void Main( string [] args) { //设定服务器IP地址 IPAddress ip = IPAddress.Parse( "127.0.0.1" ); Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); try { clientSocket.Connect( new IPEndPoint(ip, 8885)); //配置服务器IP与端口 Console.WriteLine( "连接服务器成功" ); } catch { Console.WriteLine( "连接服务器失败,请按回车键退出!" ); return ; } //通过clientSocket接收数据 int receiveLength = clientSocket.Receive(result); Console.WriteLine( "接收服务器消息:{0}" ,Encoding.ASCII.GetString(result,0,receiveLength)); //通过 clientSocket 发送数据 for ( int i = 0; i < 10; i++) { try { Thread.Sleep(1000); //等待1秒钟 string sendMessage = "client send Message Hellp" + DateTime.Now; clientSocket.Send(Encoding.ASCII.GetBytes(sendMessage)); Console.WriteLine( "向服务器发送消息:{0}" + sendMessage); } catch { clientSocket.Shutdown(SocketShutdown.Both); clientSocket.Close(); break ; } } Console.WriteLine( "发送完毕,按回车键退出" ); Console.ReadLine(); } } } |
编译成功后,先运行 服务端(server),再运行客户端(client)即可达到通信效果。
效果如下图:
该程序已在局域网测试通过。(192.168.X.X)