代码保存(控制台应用)——通信类

最新推荐文章于 2025-01-13 17:31:28 发布

kawaniu

最新推荐文章于 2025-01-13 17:31:28 发布

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分类专栏： C#

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本文介绍了一个基于TCP协议的异步通信实现，包括服务器端和客户端的代码示例。服务器端通过BeginAccept方法异步接收客户端连接请求，并在连接建立后使用BeginReceive方法接收数据；客户端则连接到指定的IP地址和端口，接收服务器消息并持续发送数据。

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代码没能实现，仅收藏供后期学习备用：

服务器端：

static void StartServerAyync()
        {
            //tcp数据流方式，流模式
            //创建服务器套接字
            Socket serverSocker = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            //IP地址
            IPAddress iPAddress = IPAddress.Parse("192.168.96.89");
            //端口号
            IPEndPoint Point = new IPEndPoint(iPAddress, 8888);
            //绑定IP地址和端口号
            serverSocker.Bind(Point);
            //开始监听端口号，监听不超过10个
            serverSocker.Listen(10);
            //异步接收客户端的连接
            serverSocker.BeginAccept(AcceptCallBack, serverSocker);
        }

//异步等待客户端连接的回调函数
        static void AcceptCallBack(IAsyncResult ar)
        {
           
            //clientCount++;
            //Console.WriteLine("一个客户端连接上了本服务器，当前连接的客户端数:" /*+ clientCount*/);
            Socket serverSocket = ar.AsyncState as Socket;
            Socket clientSocket = serverSocket.EndAccept(ar);

            //向客户端发送数据
            string msgSend = "hello word";
            byte[] sendBuffer = Encoding.ASCII.GetBytes(msgSend);
            //接收客户端数据
            clientSocket.BeginReceive(receiveBuffer, 0, 1024, SocketFlags.None, ReceiveCallBack, clientSocket);
            //继续异步接收客户端的连接
            serverSocket.BeginAccept(AcceptCallBack, serverSocket);
        }

//异步接收客户端数据的回调函数
        static void ReceiveCallBack(IAsyncResult ar)
        {
            Socket clientSocket = null;
            try
            {
                clientSocket = ar.AsyncState as Socket;
                int count = clientSocket.EndReceive(ar);
                if (count==0)
                {
                    //clientCount--;
                    Console.WriteLine("一个客户端关闭了连接，当前连接的客户端数" /*+ clientCount*/);
                    if (clientSocket!=null)
                    {
                        clientSocket.Close();
                    }
                    return;
                }
                string msgReceive = Encoding.UTF8.GetString(receiveBuffer, 0, count);
                Console.WriteLine("客户端消息" + msgReceive);
                clientSocket.BeginReceive(receiveBuffer, 0, 1024, SocketFlags.None, ReceiveCallBack, clientSocket);
            }
            catch (Exception)
            {
                //clientCount--;
                Console.WriteLine("一个客户端关闭了连接，当前客户端数" /*+ clientCount*/);
                if (clientSocket!=null)
                {
                    clientSocket.Close();
                }
                
            }
        }

客户端：

static void Main(string[] args)
        {
            //创建客户端套接字
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            //与服务器进行连接
            clientSocket.Connect(new IPEndPoint(IPAddress.Parse("192.168.96.89"),8888));
            //接收从服务器端发送过来的消息
            byte[] dataReceive = new byte[1024];
            int count = clientSocket.Receive(dataReceive);
            string msgReceive = Encoding.ASCII.GetString(dataReceive, 0, count);
            Console.WriteLine(msgReceive);

            string str = Console.ReadLine();
            //向服务器端发送一条消息
            while (true)
            {
                byte[] dataSend = Encoding.UTF8.GetBytes(str);
                clientSocket.Send(dataSend);
                str = Console.ReadLine();
                if (str.Equals("exit"))
                {
                    break;
                }
            }
            clientSocket.Close();
            Console.ReadLine();

        }