B/S项目远程控制硬件设备！（asp.net）

使用udp

 

 

 

【独立的类】

public static bool SendMessage(_ip_msg1 pMsg,string host,int port)

    {

        try

        {

           

            IPAddress ip = IPAddress.Parse(host);

            IPEndPoint ipe = new IPEndPoint(ip, port);

            Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            try

            {

                c.Connect(ipe);//尝试连接

            }

            //处理参数为空引用异常

            catch (ArgumentNullException ae)

            {

                Console.WriteLine("ArgumentNullException : {0}", ae.ToString());

            }

            //处理操作系统异常

            catch (SocketException se)

            {

                Console.WriteLine("SocketException : {0}", se.ToString());

            }

            byte[] bb = StructToBytes(pMsg);

            c.Send(bb);

            System.Threading.Thread.Sleep(300);

            c.Close();

        }

        catch (ArgumentNullException er)

        {

            Console.WriteLine("ArgumentNullException: {0}", er);

            return false;

        }

        catch (SocketException er)

        {

            Console.WriteLine("SocketException: {0}", er);

            return false;

        }

        //Console.WriteLine("Press Enter to Exit");

        //Console.ReadLine();

 

        return true;

 

    }

    public static byte[] StructToBytes(object structObj)

    {

        //int size = Marshal.Size

        int size = Marshal.SizeOf(structObj);

 

        byte[] bytes = new byte[size];

 

        IntPtr structPtr = Marshal.AllocHGlobal(size);

 

        Marshal.StructureToPtr(structObj, structPtr, false);

 

        Marshal.Copy(structPtr, bytes, 0, size);

 

        //Marshal.FreeHGlobal(structPtr);

 

        return bytes;

}

 

 

 

///

/// _ip_msg1这个类

///

[StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]

public struct _ip_msg1

{

    public byte ntype;      //消息类型

    byte ntype1;     //消息类型1

 

    byte nGUItype;       //界面交互

    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]

    byte[] nIP;      //目标IP

 

    public byte nLen;           //消息长度

    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 256)]

    public byte[] nBuf;

    byte Reserve;    //预留

 

}

 

 

【后台】

 

在事件中调用这个方法

    add1、add2分别代表设备节点和设备地址

    cc代表状态

public bool accCltFunc(string add1, string add2, string cc)

    {

        bool cat = false;

        if (string.IsNullOrEmpty(add1) || string.IsNullOrEmpty(add2) || string.IsNullOrEmpty(cc))

            return false;

 

        try

        {

            _ip_msg1 pMsg = new _ip_msg1();

            pMsg.ntype = Convert.ToByte(msg_type.NET_OUT_DOOR);

            pMsg.nBuf = new byte[256];

　　　　　　//要接收的字节

            pMsg.nBuf[2] = 0xD2;

            pMsg.nBuf[3] = Convert.ToByte(add1);

            pMsg.nBuf[4] = Convert.ToByte(add2);

            pMsg.nBuf[5] = Convert.ToByte(cc);

            pMsg.nBuf[6] = Convert.ToByte(pMsg.nBuf[2] + pMsg.nBuf[3] + pMsg.nBuf[4] + pMsg.nBuf[5]);

            cat = PublicCLSS.SendMessage(pMsg, "192.168.0.250", 8088);

            cat= PublicCLSS.SendMessage(pMsg, "127.0.0.1", 8088);

            if (!cat)

            {

                return cat;

            }

            else

            {

                return cat;

            }

 

        }

        catch (ArgumentNullException er)

        {

            Console.WriteLine("ArgumentNullException: {0}", er);

            return false;

        }

        catch (SocketException er)

        {

            Console.WriteLine("SocketException: {0}", er);

            return false;

        }

       

    }

 

 

基本就是这些！