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:
引入命名空间:
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using System.Net.Sockets;
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using System.Net;
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using System.Threading;
完整代码如下:
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namespace SocketServer
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{
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class Program
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{
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private static byte[] result = new byte[1024];
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private static int myProt = 8885;
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static Socket serverSocket;
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static void Main(string[] args)
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{
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IPAddress ip = IPAddress.Parse("127.0.0.1");
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serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
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serverSocket.Bind(new IPEndPoint(ip, myProt));
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serverSocket.Listen(10);
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Console.WriteLine("启动监听{0}成功", serverSocket.LocalEndPoint.ToString());
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Thread myThread = new Thread(ListenClientConnect);
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myThread.Start();
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Console.ReadLine();
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}
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private static void ListenClientConnect()
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{
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while (true)
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{
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Socket clientSocket = serverSocket.Accept();
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clientSocket.Send(Encoding.ASCII.GetBytes("Server Say Hello"));
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Thread receiveThread = new Thread(ReceiveMessage);
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receiveThread.Start(clientSocket);
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}
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}
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private static void ReceiveMessage(object clientSocket)
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{
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Socket myClientSocket = (Socket)clientSocket;
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while (true)
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{
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try
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{
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int receiveNumber = myClientSocket.Receive(result);
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Console.WriteLine("接收客户端{0}消息{1}", myClientSocket.RemoteEndPoint.ToString(), Encoding.ASCII.GetString(result, 0, receiveNumber));
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}
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catch(Exception ex)
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{
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Console.WriteLine(ex.Message);
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myClientSocket.Shutdown(SocketShutdown.Both);
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myClientSocket.Close();
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break;
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}
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}
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}
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}
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}
以上是服务端(server)的完整代码。
客户端(Client)的完整代码如下:
引入命名空间:
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using System.Net;
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using System.Net.Sockets;
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using System.Threading;
完整代码:
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namespace SocketClient
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{
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class Program
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{
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private static byte[] result = new byte[1024];
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static void Main(string[] args)
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{
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IPAddress ip = IPAddress.Parse("127.0.0.1");
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Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
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try
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{
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clientSocket.Connect(new IPEndPoint(ip, 8885));
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Console.WriteLine("连接服务器成功");
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}
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catch
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{
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Console.WriteLine("连接服务器失败,请按回车键退出!");
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return;
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}
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int receiveLength = clientSocket.Receive(result);
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Console.WriteLine("接收服务器消息:{0}",Encoding.ASCII.GetString(result,0,receiveLength));
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for (int i = 0; i < 10; i++)
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{
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try
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{
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Thread.Sleep(1000);
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string sendMessage = "client send Message Hellp" + DateTime.Now;
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clientSocket.Send(Encoding.ASCII.GetBytes(sendMessage));
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Console.WriteLine("向服务器发送消息:{0}" + sendMessage);
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}
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catch
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{
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clientSocket.Shutdown(SocketShutdown.Both);
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clientSocket.Close();
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break;
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}
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}
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Console.WriteLine("发送完毕,按回车键退出");
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Console.ReadLine();
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}
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}
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}
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)
若编译失败,可到下面的地址下载项目文件:
http://download.csdn.net/source/3465765