SIMDP_FEM02/SIMDP.Device/Scanner.cs

using ProjectBase.Data.Logs;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using ProjectBase.Util;
using System.Threading;

namespace SIMDP.Device
{
    public class Scanner
    {
        #region 视觉相机扫码

        static byte[] Camera_CMD_Start = System.Text.Encoding.ASCII.GetBytes("LON" + "\r");
        static byte[] Camera_CMD_End = System.Text.Encoding.ASCII.GetBytes("LOFF" + "\r");
        static byte[] recvData = new byte[1024 * 1024];

        public static string CameraScanner(string Ip, int Port, int trytimes)
        {
            string res = "";
            for (int i = 0; i < trytimes; i++)
            {
                Thread.Sleep(1000);
                res = CameraScanner2(Ip, Port).Trim();

                if (SysEnvironment.CheckVINRule(res))
                    break;
            }
            return res;
        }

        public static string CameraScanner2(string Ip, int Port)
        {
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            string str = "";
            try
            {
                IPEndPoint epServer = new IPEndPoint(IPAddress.Parse(Ip), Port);
                clientSocket.Blocking = true;
                clientSocket.Connect(epServer);


                int ret = clientSocket.Send(Camera_CMD_Start);//发送LON扫码
                clientSocket.ReceiveTimeout = 2000;
                while (ret > 0)
                {
                    ret = clientSocket.Receive(recvData, recvData.Length, 0);
                    if (ret > 0)
                    {
                        str += Encoding.ASCII.GetString(recvData, 0, ret);
                        break;
                    }
                }

                clientSocket.Close();
                return str;
            }
            catch (Exception ex)
            {
                try
                {
                    clientSocket.Send(Camera_CMD_End);//发送LOFF停止
                }
                catch { }
                clientSocket.Close();
                LogHelper.log.Error("与扫码相机通信出现故障：", ex);
                return str;
            }
            finally
            {
                clientSocket?.Dispose();
            }
        }

        #endregion

    }
}