C# Socket簡單例子（服務器與客戶端通信）



這個例子只是簡單實現瞭如何使用 Socket 類實現面向連接的通信。

注意：此例子的目的只是爲了說明用套接字寫程序的大概思路，而不是實際項目中的使用程序。在這個例子中，實際上還有很多問題沒有解決，如消息邊界問題、端口號是否被佔用、消息命令的解析問題等。。

下面是兩個程序的代碼，（兩個程序均爲控制檯程序）

服務器端:

using System.Net.Sockets;
using System.Net;
using System.Threading;
using System.Text;
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)
        {
            //服務器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));  //綁定IP地址：端口
            serverSocket.Listen(10);    //設定最多10個排隊連接請求
            Console.WriteLine("啓動監聽{0}成功", serverSocket.LocalEndPoint.ToString());
            //通過Clientsoket發送數據
            Thread myThread = new Thread(ListenClientConnect);
            myThread.Start();
            Console.ReadLine();
        }

        /// <summary>
        /// 監聽客戶端連接
        /// </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
                {
                    //通過clientSocket接收數據
                    int receiveNumber = myClientSocket.Receive(result);
                    Console.WriteLine("接收客戶端{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;
                }
            }
        }
    }
}

客服端：

using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Text;
namespace SocketClient
{
    class Program
    {
        private static byte[] result = new byte[1024];
        static void Main(string[] args)
        {
            //設定服務器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)); //配置服務器IP與端口
                Console.WriteLine("連接服務器成功");
            }
            catch
            {
                Console.WriteLine("連接服務器失敗，請按回車鍵退出！");
                return;
            }
            //通過clientSocket接收數據
            int receiveLength = clientSocket.Receive(result);
            Console.WriteLine("接收服務器消息：{0}",Encoding.ASCII.GetString(result,0,receiveLength));
            //通過 clientSocket 發送數據
            for (int i = 0; i < 10; i++)
            {
                try
                {
                    Thread.Sleep(1000);    //等待1秒鐘
                    string sendMessage = "client send Message Hellp" + DateTime.Now;
                    clientSocket.Send(Encoding.ASCII.GetBytes(sendMessage));
                    Console.WriteLine("向服務器發送消息：{0}" + sendMessage);
                }
                catch
                {
                    clientSocket.Shutdown(SocketShutdown.Both);
                    clientSocket.Close();
                    break;
                }
            }
            Console.WriteLine("發送完畢，按回車鍵退出");
            Console.ReadLine();
        }
    }
}

編譯成功後，先運行 服務端（server），再運行客戶端（client）即可達到通信效果。

效果如下圖：

原文鏈接：http://blog.csdn.net/andrew_wx/article/details/6629721/