使用UDP协议与韩国OACIS压机通讯

Posted 2020-08-23 joe.fan

最近一个项目需要发送SN给OACIS，

研究了一下OACIS文档，

从文档中可以看出，传输协议只能使用UDP，切传输命令为>SN1; + SN  + ; + LF

LF的定义在Linux和Unix中换行符，但是在Windows中换行为CRLF，MAC中又为CR

所以这里只能用ASCII，LF的ASCII为10

所以程序如下：

public class OACISHelper
    {
        public string[] strArrGV;
        public string strCN;
        public string strDateTime;
        public string strFM;

        public string strOACISIPAdd;
        public int iOACISPort;
        public string strSN;

        public bool setSN(string val_strSN)
        {
            char ch = Convert.ToChar(10);
            string str = string.Concat(new object[] { ">SN1;", val_strSN, ";", ch });
            string str2 = this.Request(str);
            return ((str2.Length > 4) && (str2.Substring(0, 4) == "<SN1"));
        }

        private string Request(string val_strRequest)
        {
            string str = this.RequestOneTime(val_strRequest);
            if ((str.Substring(0, 1) != "#") || (str.Substring(str.Length - 1) != "$"))
            {
                str = this.RequestOneTime(val_strRequest);
                if ((str.Substring(0, 1) == "#") && (str.Substring(str.Length - 1) == "$"))
                {
                    return str;
                }
                str = this.RequestOneTime(val_strRequest);
                if ((str.Substring(0, 1) == "#") && (str.Substring(str.Length - 1) == "$"))
                {
                    return str;
                }
                str = this.RequestOneTime(val_strRequest);
                if ((str.Substring(0, 1) == "#") && (str.Substring(str.Length - 1) == "$"))
                {
                    return str;
                }
                str = this.RequestOneTime(val_strRequest);
                if ((str.Substring(0, 1) == "#") && (str.Substring(str.Length - 1) == "$"))
                {
                    return str;
                }
            }
            return str;
        }

        private string RequestOneTime(string val_strRequest)
        {
            byte[] bytes = null;
            try
            {
                byte[] dgram = Encoding.Default.GetBytes(val_strRequest);
                UdpClient client = new UdpClient();
                IPEndPoint remoteEP = new IPEndPoint(IPAddress.Any, 0);
                client.Client.ReceiveTimeout = 0x3e8;
                client.Send(dgram, dgram.Length, this.strOACISIPAdd, this.iOACISPort);
                bytes = client.Receive(ref remoteEP);
                return Encoding.Default.GetString(bytes);
            }
            catch (Exception exception)
            {
                string str2 = "";
                if (bytes != null)
                {
                    for (int i = 0; i < bytes.Length; i++)
                    {
                        str2 = str2 + " / " + i.ToString() + "-" + bytes[i].ToString();
                    }
                }
                return exception.Message;
            }
        }

        public bool readResults()
        {
            string str = this.Request("@UG;LN;004;$");
            string[] strArray = str.Split(new char[] { \';\' });
            if (((strArray[0] == "#UG") && (strArray[strArray.Length - 1] == "$")) && (strArray.Length == 0x86))
            {
                this.strCN = strArray[4];
                this.strFM = strArray[10];
                this.strSN = strArray[strArray.Length - 3];
                this.strDateTime = strArray[8];
                for (int i = 0; i < 120; i++)
                {
                    this.strArrGV[i] = strArray[i + 11];
                }
                return true;
            }
            this.strSN = str;
            return false;
        }
    }