297 lines
9.8 KiB
C#
297 lines
9.8 KiB
C#
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using AUTS.Services.Manager;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace AUTS.Services
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{
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public partial class UDPHelp
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{
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/// <summary>
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/// 用于UDP发送的网络服务类Socket
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/// </summary>
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static Socket socketRecv = null;
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/// <summary>
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/// 本机IP端口信息
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/// </summary>
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static IPEndPoint localIpep = null;
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/// <summary>
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/// 开关：在监听UDP报文阶段为true，否则为false
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/// </summary>
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static bool IsUdpcRecvStart = false;
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/// <summary>
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/// 线程：不断监听UDP报文
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/// </summary>
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static Thread thrRecv;
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/// <summary>
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/// 开启监听
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/// </summary>
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public static void StartReceive()
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{
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//if (!IsUdpcRecvStart) // 未监听的情况，开始监听
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//{
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//localIpep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 7254); // 本机IP和监听端口号
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localIpep = new IPEndPoint(IPAddress.Any, 5920); // 本机IP和监听端口号
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IPGlobalProperties ipProperties = IPGlobalProperties.GetIPGlobalProperties();
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//IPEndPoint[] ipEndPoints = ipProperties.GetActiveUdpListeners();
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var portCount = ipProperties.GetActiveUdpListeners().Where(x => x.Port == 5920).Count();
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if (portCount == 0)
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{
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socketRecv = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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socketRecv.Bind(localIpep);
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thrRecv = new Thread(new ThreadStart(ReceiveMessage)); //开辟一个新线程
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if (thrRecv.ThreadState != ThreadState.Running)
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{
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thrRecv.Start();
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IsUdpcRecvStart = true;
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Logs.WriteTimingUDPLog("UDP监听器已成功启动,IP:" + localIpep);
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}
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}
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//}
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}
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/// <summary>
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/// 关闭监听
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/// </summary>
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public static void StopReceive()
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{
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if (IsUdpcRecvStart)
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{
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thrRecv.Abort(); // 必须先关闭这个线程，否则会异常
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//udpcRecv.Close();
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socketRecv.Close();
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IsUdpcRecvStart = false;
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Logs.WriteTimingUDPLog("UDP监听器已成功关闭");
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}
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}
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/// <summary>
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/// 接收数据
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/// </summary>
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/// <param name="obj"></param>
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private static void ReceiveMessage()
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{
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while (IsUdpcRecvStart)
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{
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try
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{
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// 接收
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IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
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EndPoint Remote = (EndPoint)sender;
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byte[] data = new byte[256];
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int len = socketRecv.ReceiveFrom(data, ref Remote);
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string result = BitConverter.ToString(data, 0, len);
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UdpMsgHandle(data, len, Remote);
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Logs.WriteTimingUDPLog("UDP接收数据:{来源IP:" + Remote + " ,数据包:" + result + " }");
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}
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catch (Exception ex)
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{
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Logs.WriteErrorTimingUDPLog("UDP接收错误:", ex);
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break;
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}
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}
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}
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/// <summary>
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/// 发送信息
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/// </summary>
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/// <param name="obj"></param>
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private static void SendMessage(object obj)
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{
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try
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{
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string message = (string)obj;
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byte[] sendbytes = Encoding.Unicode.GetBytes(message);
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IPEndPoint remoteIpep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 8819); // 发送到的IP地址和端口号
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socketRecv.SendTo(sendbytes, sendbytes.Length, SocketFlags.None, remoteIpep);
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}
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catch (Exception ex)
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{
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Logs.WriteErrorTimingUDPLog("UDP发送", ex);
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}
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}
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/// <summary>
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/// 处理UDP信息
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/// </summary>
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/// <param name="data"></param>
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/// <param name="len"></param>
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/// <param name="Remote"></param>
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public static void UdpMsgHandle(byte[] data, int len, EndPoint Remote)
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{
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var keyNum = Convert.ToInt32(data[2]);//数据包长度
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var checkValue = data[3];//校验位
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Array.Clear(data, 3, 1);//data 从起始位置4， 删除1个位置
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var packetSum = AddMsgByte(data);//数据包累加
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var checkSum = (byte)((255 - packetSum) & 0xFF);
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if ((len - keyNum) == 5 && checkSum == checkValue)
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{
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var sID = BitConverter.ToInt32(data, 5);
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DevManageHelp.UdpDevServiceHandle(sID);
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IPEndPoint endpoint = Remote as IPEndPoint;
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var ipByte = endpoint.Address.GetAddressBytes();
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var retMsg = new byte[256];
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Buffer.BlockCopy(data, 0, retMsg, 0, 3);
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retMsg[4] = Convert.ToByte(data[4] + 0xA0);
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Buffer.BlockCopy(ipByte, 0, retMsg, 5, ipByte.Length);
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var num = AddMsgByte(retMsg);
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retMsg[3] = (byte)((255 - num) & 0xFF);
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socketRecv.SendTo(retMsg, len, SocketFlags.None, Remote);
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}
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}
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/// <summary>
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/// 累加十六进制数据
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/// </summary>
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/// <param name="retMsg"></param>
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/// <returns></returns>
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public static int AddMsgByte(byte[] retMsg)
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{
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//var len = retMsg.Length;
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var num = 0;
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for (var i = 0; i < retMsg.Length; i++)
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{
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num += retMsg[i];
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}
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return num;
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}
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}
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public partial class UDPHelp_New
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{
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/// <summary>
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/// 累加十六进制数据
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/// </summary>
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/// <param name="retMsg"></param>
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/// <returns></returns>
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public static int AddMsgByte(byte[] retMsg)
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{
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//var len = retMsg.Length;
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var num = 0;
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for (var i = 0; i < retMsg.Length; i++)
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{
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num += retMsg[i];
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}
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return num;
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}
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public static void CreatSocket()
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{
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try
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{
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int port = 5930;
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string host = "127.0.0.1";
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/**/
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///创建终结点（EndPoint）
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IPAddress ip = IPAddress.Parse(host); //把ip地址字符串转换为IPAddress类型的实例
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IPEndPoint ipe = new IPEndPoint(ip, port); //用指定的端口和ip初始化IPEndPoint类的新实例
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/**/
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///创建终结点（EndPoint）
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Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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foreach (IPAddress address in Dns.GetHostEntry(host).AddressList)
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{
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if (address.AddressFamily.ToString() == "InterNetwork")
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{
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IPAddress hostIP = address;
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IPEndPoint ipe2 = new IPEndPoint(address, 5930);
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socket.Bind(ipe2); //绑定EndPoint对像
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//socket.Listen(0); //开始监听
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//接受到client连接，为此连接建立新的socket，并接受信息
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while (true) //定义循环，以便可以简历N次连接
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{
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Socket temp = socket.Accept(); //为新建连接创建新的socket
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IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
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EndPoint Remote = (EndPoint)sender;
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byte[] recvBytes = new byte[256];
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int bytes = temp.ReceiveFrom(recvBytes, ref Remote); //从客户端接受信息
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var sID = BitConverter.ToInt32(recvBytes, 5);
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DevManageHelp.UdpDevServiceHandle(sID);
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string recvStr = BitConverter.ToString(recvBytes, 0, bytes);
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var retMsg = UdpMsgHandle_New(recvBytes, bytes, Remote);
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temp.Send(retMsg, bytes, 0);//返回信息给客户端
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if (temp != null)
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temp.Close();
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Logs.WriteTimingUDPLog("UDP接收-IP:" + Remote + ",数据包:" + recvStr);
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}
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}
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}
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}
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catch (Exception ex)
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{
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Logs.WriteErrorTimingUDPLog("UDP监听器开启错误:", ex);
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}
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}
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public static byte[] UdpMsgHandle_New(byte[] data, int len, EndPoint Remote)
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{
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var retMsg = new byte[256];
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var keyNum = Convert.ToInt32(data[2]);
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if ((len - keyNum) == 5)
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{
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IPEndPoint endpoint = Remote as IPEndPoint;
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//IPAddress ip = endpoint.Address;
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var ipByte = endpoint.Address.GetAddressBytes();
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//var ipByte = new byte[] { 183, 12, 223, 210 };
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retMsg[0] = data[0];
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retMsg[1] = data[1];
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retMsg[2] = data[2];
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retMsg[4] = Convert.ToByte(data[4].ToInt() + 160);
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retMsg[5] = ipByte[0];
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retMsg[6] = ipByte[1];
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retMsg[7] = ipByte[2];
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retMsg[8] = ipByte[3];
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var num = AddMsgByte(retMsg);
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retMsg[3] = (byte)((255 - num) & 0xFF);
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}
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return retMsg;
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}
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}
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}
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