using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using UAS_PLCDataReader;

namespace ClassFile
{
    class ModeBusTCPServer
    {
        private bool isOpen = false;

        Thread threadWatch = null; //负责监听客户端的线程
        Socket socketWatch = null; //负责监听客户端的套接字

        public bool IsOpen
        {
            get
            {
                return isOpen;
            }

            set
            {
                isOpen = value;
            }
        }

        public string IP
        {
            get
            {
                return iP;
            }

            set
            {
                iP = value;
            }
        }

        public string Port
        {
            get
            {
                return port;
            }

            set
            {
                port = value;
            }
        }

        private string iP;

        private string port;

        RichTextAutoBottom richtext;

        public ModeBusTCPServer()
        {

        }

        public bool Open()
        {
            try
            {
                richtext = Application.OpenForms["MainWindow"].Controls["Result"] as RichTextAutoBottom;
                //定义一个套接字用于监听客户端发来的信息  包含3个参数(IP4寻址协议,流式连接,TCP协议)
                socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                //服务端发送信息 需要1个IP地址和端口号
                IPAddress ipaddress = IPAddress.Parse(iP);
                //将IP地址和端口号绑定到网络节点endpoint上 
                IPEndPoint endpoint = new IPEndPoint(ipaddress, int.Parse(port));
                //监听绑定的网络节点
                socketWatch.Bind(endpoint);
                //将套接字的监听队列长度限制为20
                socketWatch.Listen(20);
                //创建一个监听线程 
                threadWatch = new Thread(WatchConnecting);
                //将窗体线程设置为与后台同步
                threadWatch.IsBackground = true;
                //启动线程
                threadWatch.Start();
                isOpen = true;
                return true;
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
                return false;
            }
        }

        private void WatchConnecting()
        {
            Socket connection = null;
            while (true)  //持续不断监听客户端发来的请求
            {
                try
                {
                    connection = socketWatch.Accept();
                }
                catch (Exception)
                {
                    break;
                }
                //获取客户端的IP和端口号  
                IPAddress clientIP = (connection.RemoteEndPoint as IPEndPoint).Address;
                int clientPort = (connection.RemoteEndPoint as IPEndPoint).Port;

                //让客户显示"连接成功的"的信息  
                string sendmsg = "连接服务端成功！\r\n" + "本地IP:" + clientIP + "，本地端口" + clientPort.ToString();
                byte[] arrSendMsg = Encoding.UTF8.GetBytes(sendmsg);
                connection.Send(arrSendMsg);

                //客户端网络结点号  
                string remoteEndPoint = connection.RemoteEndPoint.ToString();
                //显示与客户端连接情况
                richtext.AppendText("成功与" + remoteEndPoint + "客户端建立连接！\t\n");

                //IPEndPoint netpoint = new IPEndPoint(clientIP,clientPort); 
                IPEndPoint netpoint = connection.RemoteEndPoint as IPEndPoint;

                //创建一个通信线程      
                ParameterizedThreadStart pts = new ParameterizedThreadStart(recv);
                Thread thread = new Thread(pts);
                //设置为后台线程，随着主线程退出而退出 
                thread.IsBackground = true;
                //启动线程     
                thread.Start(connection);
            }
        }

        void recv(object socketclientpara)
        {
            Socket socketServer = socketclientpara as Socket;
            while (true)
            {
                //创建一个内存缓冲区，其大小为1024*1024字节  即1M     
                byte[] arrServerRecMsg = new byte[1024 * 1024];
                //将接收到的信息存入到内存缓冲区，并返回其字节数组的长度    
                try
                {
                    int length = socketServer.Receive(arrServerRecMsg);
                    //将机器接受到的字节数组转换为人可以读懂的字符串     
                    string strSRecMsg = Encoding.UTF8.GetString(arrServerRecMsg, 0, length);
                    //将发送的字符串信息附加到文本框txtMsg上     
                    richtext.AppendText("客户端:" + socketServer.RemoteEndPoint + ",\r\n" + strSRecMsg + "\r\n\n");
                    socketServer.Send(Encoding.UTF8.GetBytes("ReturnData"));
                }
                catch (Exception ex)
                {
                    //提示套接字监听异常  
                    richtext.AppendText("客户端" + socketServer.RemoteEndPoint + "已经中断连接" + "\r\n" + ex.Message + "\r\n" + ex.StackTrace + "\r\n");
                    //关闭之前accept出来的和客户端进行通信的套接字 
                    socketServer.Close();
                    break;
                }
            }
        }

        public void Close()
        {
            threadWatch.Abort();
            socketWatch.Close();
            isOpen = false;
        }

        public void SendOrder(string Code)
        {

            switch (Code)
            {
                default:
                    break;
            }
        }
    }
}