c#5有的新特性async非同步關鍵字配合Task使用。

非同步Task將很大的提高程式效能，所以這次我來分享一段採用async關鍵字和Task的socket服務端程式碼

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace SocketServer
{
    class Program
    {
        private static byte[] result = new byte[1024];
        private static int myProt = 8885;   //埠  
        static Socket serverSocket;
        static void Main(string[] args)
        {
            CancellationTokenSource cts = new CancellationTokenSource();
            //伺服器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));  //繫結IP地址：埠  
            serverSocket.Listen(10);    //設定最多10個排隊連線請求  
            try
            {


                Console.WriteLine("啟動監聽{0}成功", serverSocket.LocalEndPoint.ToString());
                //通過Clientsoket傳送資料  
                ListenClientConnect(cts.Token).Wait();
                Console.ReadLine();
            }
            finally
            {
                cts.Cancel();
                serverSocket.Shutdown(SocketShutdown.Both);
                serverSocket.Close();
            }
        }
        /// <summary>  
        /// 監聽客戶端連線  
        /// </summary>  
        private static async Task ListenClientConnect(CancellationToken ct)
        {
            while (!ct.IsCancellationRequested)
            {
                Socket clientSocket = serverSocket.Accept();
                clientSocket.Send(Encoding.ASCII.GetBytes("Server Say Hello"));
                await ReceiveMessage(clientSocket, ct);
                await Task.Delay(1000);
            }
        }

        /// <summary>  
        /// 接收訊息  
        /// </summary>  
        /// <param name="clientSocket"></param>  
        private static async Task ReceiveMessage(object clientSocket, CancellationToken ct)
        {
            Socket myClientSocket = (Socket)clientSocket;
            while (!ct.IsCancellationRequested)
            {
                try
                {
                    //通過clientSocket接收資料  
                    int receiveNumber = myClientSocket.Receive(result);
                    Console.WriteLine("接收客戶端{0}訊息{1}", myClientSocket.RemoteEndPoint.ToString(), Encoding.ASCII.GetString(result, 0, receiveNumber));
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                    myClientSocket.Shutdown(SocketShutdown.Both);
                    myClientSocket.Close();
                    break;
                }
            }
        }
    }
}
 

客戶端程式碼如下：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace SocketClient
{
    class Program
    {
        private static byte[] result = new byte[1024];
        static void Main(string[] args)
        {
            //設定伺服器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)); //配置伺服器IP與埠  
                Console.WriteLine("連線伺服器成功");
            }
            catch
            {
                Console.WriteLine("連線伺服器失敗，請按回車鍵退出！");
                return;
            }
            //通過clientSocket接收資料  
            int receiveLength = clientSocket.Receive(result);
            Console.WriteLine("接收伺服器訊息：{0}", Encoding.ASCII.GetString(result, 0, receiveLength));
            //通過 clientSocket 傳送資料  
            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($"向伺服器傳送第{i + 1}訊息：{sendMessage}");
                }
                catch
                {
                    clientSocket.Shutdown(SocketShutdown.Both);
                    clientSocket.Close();
                    break;
                }
            }
            Console.WriteLine("傳送完畢，按回車鍵退出");
            Console.ReadLine();
        }
    }
}