C#的Socket使用教程

一、Socket是什么？

Socket是應用層與TCP/IP協議族通信的中間軟體抽象層，，是用于在兩個基于TCP/IP協議的應用程式之間相互通信，其實呢，Socket就是把復雜的TCP/IP協議族隱藏在Socket介面后面，

二、使用步驟

1.服務端

      static  Socket Server = null;//服務端的socket
      Dictionary<string,Socket> SocketList = new Dictionary<string, Socket>();//保存客戶的物件（這樣就可以想發給誰就發給誰）
 try
            {
                string host = "127.0.0.1";//本機
                int port = "8866";//埠號
                IPAddress iPAddress = IPAddress.Parse(host);
                IPEndPoint iP = new IPEndPoint(iPAddress, port);
                Server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                Server.Bind(iP);//系結IP地址：埠
                Server.Listen(10);//設定最多10個連接請求排隊
                //建立執行緒監聽client連接請求
                Thread t1 = new Thread(new ThreadStart(AcceptConncetion));
                t1.Start();
                Console.WriteLine("啟動成功！"+ "監聽：" + Server.LocalEndPoint.ToString());
            }
            catch (Exception ex)
            {
                Console.WriteLine("啟動失敗");
            }  
         /// <summary>
        /// 監聽客戶端連接
        /// </summary>
       public void AcceptConncetion()
        {
            Socket acceptSocket = null;
            while (true)
            {
                acceptSocket =  Server.Accept();//獲取到客戶端的
                SocketList.Add(acceptSocket.RemoteEndPoint.ToString(), acceptSocket);//添加客戶端物件
                Console.WriteLine("連接數量"+SocketList.Count);
                //每接收到一個連接，啟動新執行緒接收資料
                Thread t2 = new Thread(new ParameterizedThreadStart(GetData));
                t2.Start(acceptSocket);
            }
        } 
        /// <summary>
        /// 獲取客戶端發送來的資料
        /// </summary>
        /// <param name="clientSocket"></param>
       public void GetData(object clientSocket)
        {
            Socket socket = clientSocket as Socket;
            while (true)
            {
                byte[] bs = new byte[1024 * 1024];
                //接收資料
                socket.Receive(bs);
                string str = Encoding.UTF8.GetString(bs);
                this.Invoke(new Action(() =>
                {
                    richTextBox1.AppendText("\n"+str);
                }));
            }
        } 
        /// <summary>
        ///給客戶端發送資訊
        /// </summary>
        private void Send()
        {
                var sk = SocketList[0];//選擇客戶端的socket
                string sendData = "一起睡覺嘛";
                byte[] bs = Encoding.UTF8.GetBytes(sendData);
                sk.Send(bs);
        }

2.客戶端

1.連接服務端代碼并接收資訊：
Socket Client = null;//客戶端物件socket
            string host = "127.0.0.1";
            int port = 8866;
            IPAddress address = IPAddress.Parse(host);
            IPEndPoint iP = new IPEndPoint(address, port);
            Client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            Client.Connect(iP);//連接服務端
            Thread t1 = new Thread(new ThreadStart(() =>
            {
                while (true)
                {
                    byte[] bs = new byte[1024 * 1024];
                    Client.Receive(bs);//接收資訊
                    string str = Encoding.UTF8.GetString(bs);
                    this.richTextBox1.Invoke(new Action(() =>
                    {
                        richTextBox1.AppendText("\n"+str);
                    }));
                }
            }));
            t1.Start();

2.發送到客服端：    
 string sendData = "想一起睡呀";
            byte[] bs = Encoding.UTF8.GetBytes(sendData);
            Client.Send(bs);//發送資訊

總結

一個服務端，n個客戶端連接，

學習與快樂并進，只愿當下的我還是還是個陽光開朗的有那么點帥氣的小伙子哈哈哈

https://blog.csdn.net/qq_41187108/article/details/116204749