AutoCAD.net支持后台线程-Socket通讯

最近因为公司项目的需求，CAD作为服务端在服务器中常驻运行，等待客户端远程发送执行任务的指令，最终确认用Socket-tcp通讯，CAD需要实时监听客户端发送的消息，这时就需要开启线程执行Socket的监听任务。

这样问题就来了，CADAPI不支持多线程，您只能从主线程调用API函数，如果您处于不同的线程，则必须将调用集中到主线程上。

最后查了半天的资料发现，最简单的实现方式，是建立在主线程system.windows.forms.control对象并调用它的启动功能，做最后处理invoke()功能。

下面分别是客户端和服务端的demo

 class Program
    {
        private static byte[] result = new byte[1024];
        static void Main(string[] args)
        {
            //设定服务器IP地址
            IPAddress ip = IPAddress.Parse("10.19.10.237");
            //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)); //配置服务器IP与端口
                Console.WriteLine("连接服务器成功");
            }
            catch
            {
                Console.WriteLine("连接服务器失败，请按回车键退出！");
                return;
            }
            //通过clientSocket接收数据
            int receiveLength = clientSocket.Receive(result);
            Console.WriteLine("接收服务器消息：{0}", Encoding.UTF8.GetString(result, 0, receiveLength));
            //通过 clientSocket 发送数据
            for (int i = 0; i < 13; i++)
            {
                try
                {
                    Thread.Sleep(1000);    //等待1秒钟
                    string sendMessage = "C:\Users\Administrator\Desktop\原始CAD文件\14412-kujiale.dxf";
                    clientSocket.Send(Encoding.UTF8.GetBytes(sendMessage));
                    Console.WriteLine("向服务器发送消息：{0}" + sendMessage);
                    receiveLength = clientSocket.Receive(result);
                    Console.WriteLine("接收服务器消息：{0}", Encoding.UTF8.GetString(result, 0, receiveLength));
                }
                catch
                {
                    clientSocket.Shutdown(SocketShutdown.Both);
                    clientSocket.Close();
                    break;
                }
            }
            clientSocket.Shutdown(SocketShutdown.Both);
            clientSocket.Close();
            Console.WriteLine("发送完毕，按回车键退出");
            Console.ReadLine();
        }
    }

 public class SocketServer
    {
        //通过winform控件进行后台处理，CADAPI不支持多线程
        static Control syncCtrl;
        //承载接收数据
        private static byte[] result = new byte[1024];
        //端口
        private static int myProt = 8885;

        private static Socket serverSocket;

        delegate void FinishedProcessingDelegate();
        public static void InitSocket()
        {
            //创建控件
            syncCtrl = new Control();
            syncCtrl.CreateControl();
            //创建通讯对象
            serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            //绑定IP地址：端口
            serverSocket.Bind(new IPEndPoint(IPAddress.Any, myProt));
            //设定最多10个排队连接请求
            serverSocket.Listen(10);   
            //通过Clientsoket发送数据
            Thread myThread = new Thread(ListenClientConnect);
            myThread.Start();
        }
        /// <summary>
        /// 监听客户端连接
        /// </summary>
        private static void ListenClientConnect()
        {
            while (true)
            {
                Socket clientSocket = serverSocket.Accept();
                try
                {
                    
                    clientSocket.Send(Encoding.UTF8.GetBytes("我是牛魔王"));
                    Thread receiveThread = new Thread(ReceiveMessage);
                    receiveThread.Start(clientSocket);
                }
                catch (Exception)
                {

                    clientSocket.Shutdown(SocketShutdown.Both);
                    clientSocket.Close();
                }
              
            }
        }

        /// <summary>
        /// 接收消息
        /// </summary>
        /// <param name="clientSocket"></param>
        private static void ReceiveMessage(object clientSocket)
        {
            Socket myClientSocket = (Socket)clientSocket;
            while (true)
            {
                try
                {
                    //通过clientSocket接收数据
                    int receiveNumber = myClientSocket.Receive(result);
                    if (receiveNumber>0)
                    {
                        //获取文件名称
                        string filePath = Encoding.UTF8.GetString(result, 0, receiveNumber);
                        //判断文件是否存在
                        if (FileOperate.FileExists(filePath))
                        {
                            FileStandardization.filePathByJava = filePath;
                            if (syncCtrl.InvokeRequired)
                            {
                                //开始执行CAD数据处理的任务
                                syncCtrl.Invoke(new FinishedProcessingDelegate(FileStandardization.TransMianByJava));
                            }
                            myClientSocket.Send(Encoding.UTF8.GetBytes("我是牛魔王:处理结果是" + FileStandardization.resultJava));
                            FileOperate.Log(SystemData.logPath, "我是牛魔王，文件处理完成：" + filePath);
                        }
                        else
                        {
                            myClientSocket.Send(Encoding.UTF8.GetBytes("我是牛魔王:文件不存在"));
                        }
                    }
                    else
                    {
                        FileOperate.Log(SystemData.logPath, "没有收到数据了");
                        myClientSocket.Shutdown(SocketShutdown.Both);
                        myClientSocket.Close();
                        break;
                    }
                   
                   
                }
                catch (Exception ex)
                {
                    FileOperate.Log(SystemData.logPath,"文件处理异常："+ex.Message);
                    myClientSocket.Shutdown(SocketShutdown.Both);
                    myClientSocket.Close();
                    break;
                }
            }
        }

    }