c# Socket Udp通讯示例源码
读卡器介绍： https://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-17663462238.15.55615b43otkNYI&id=22173428704
https://item.taobao.com/item.htm?spm=a1z10.5-c.w4002-17663462238.15.55615b43otkNYI&id=22173428704
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Collections;
using System.Collections.Specialized;
namespace ConsoleApp
{
class Program
{
private static Socket newsock;
private static EndPoint Remote;
private static string localIp;
static void Main(string[] args)
{
ArrayList AllIp = new ArrayList();
string name = Dns.GetHostName();
IPAddress[] ipadrlist = Dns.GetHostAddresses(name);
foreach (IPAddress ipa in ipadrlist)
{
if (ipa.AddressFamily == AddressFamily.InterNetwork)
localIp = ipa.ToString();
if (checkip(localIp))
{
AllIp.Add(localIp);
Console.WriteLine("IPv4地址："+localIp);
}
}
localIp = AllIp[0].ToString(); //如有多个网卡可选任意一个
ReceviceData();
}
private static bool checkip(string ipstr) //判断IP是否合法
{
IPAddress ip;
if (IPAddress.TryParse(ipstr, out ip))
{ return true; }
else { return false; }
}
static void ReceviceData()
{
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse(localIp), 39169);
newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
newsock.Bind(ipep);
Console.WriteLine("绑定地址：" + localIp+":39169\n");
//发送信息
byte[] sendbuf = new byte[1];
sendbuf[0] = 0xa6; //搜寻所有连线的读卡器命令
IPEndPoint ipep1 = new IPEndPoint(IPAddress.Broadcast, 39169);
Remote = (EndPoint)(ipep1);
newsock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);//设为广播式发送
newsock.SendTo(sendbuf, 1, SocketFlags.None, Remote);
Console.WriteLine("SendTo："+ (Convert.ToString(Remote)+" ").Substring(0,21) + " Data：A6");
Thread thread = new Thread(new ThreadStart(GetData));
thread.Start();
}
static void GetData()
{
try
{
byte[] buf = new byte[1024];
byte[] sendbuf = new byte[255];
byte[] revbufheadbak = new byte[20];
while (true)
{
if (newsock == null || newsock.Available < 1)
{
Thread.Sleep(20);
continue;
}
//接受UDP数据包
int recv = newsock.ReceiveFrom(buf, ref Remote);
string RemoteIP = Convert.ToString(Remote).Split(':')[0]; //sock来源IP
int RemotePort = Convert.ToInt32(Convert.ToString(Remote).Split(':')[1]); //Sock来源端口
string recestr = "FromIP：" + (Convert.ToString(Remote) + " ").Substring(0, 21) + " Data："; //将接收到的数据显示
for (int i = 0; i < recv; i++)
{
recestr = recestr + buf[i].ToString("X2") + " ";
}
Console.WriteLine(recestr);
if (recv>8){
if (buf[0] == revbufheadbak[0] && buf[1] == revbufheadbak[1] && buf[2] == revbufheadbak[2] && buf[3] == revbufheadbak[3] && buf[4] == revbufheadbak[4] && buf[5] == revbufheadbak[5] && buf[6] == revbufheadbak[6] && buf[7] == revbufheadbak[7] && buf[8] == revbufheadbak[8])
{
DisableSendAge(buf, RemoteIP, RemotePort); //是重复接收的数据包，回应确认接收，不做处理
return;
} else {
for (int i=0;i<9;i++){
revbufheadbak[i] = buf[i]; //将当前接收到的数据前9个字节保存，用于再次接收到数据时比对
}
}
}
switch (buf[0])
{
case 0xf2://读卡器响应服务器的搜索指令、上电开机时上传信息
Console.WriteLine("数据解析：读卡器上电开机、响应搜索指令的返回信息");
Console.WriteLine("功能码：" + buf[0].ToString("X2"));
Console.WriteLine("读卡器IP："+buf[1].ToString("D") + "." + buf[2].ToString("D") + "." + buf[3].ToString("D") + "." + buf[4].ToString("D"));
Console.WriteLine("读卡器掩码："+buf[5].ToString("D") + "." + buf[6].ToString("D") + "." + buf[7].ToString("D") + "." + buf[8].ToString("D"));
Console.WriteLine("通讯端口：" + (buf[9] + buf[10] * 256).ToString("D"));
Console.WriteLine("机号：" + (buf[11] + buf[12] * 256).ToString("D"));
Console.WriteLine("网关：" + buf[13].ToString("D") + "." + buf[14].ToString("D") + "." + buf[15].ToString("D") + "." + buf[16].ToString("D"));
Console.WriteLine("网关MAC：" + buf[17].ToString("X2") + "-" + buf[18].ToString("X2") + "-" + buf[19].ToString("X2") + "-" + buf[20].ToString("X2") + "-" + buf[21].ToString("X2") + "-" + buf[22].ToString("X2"));
Console.WriteLine("目标服务器IP：" + buf[23].ToString("D") + "." + buf[24].ToString("D") + "." + buf[25].ToString("D") + "." + buf[26].ToString("D"));
Console.WriteLine("服务器MAC：" + buf[27].ToString("X2") + "-" + buf[28].ToString("X2") + "-" + buf[29].ToString("X2") + "-" + buf[30].ToString("X2") + "-" + buf[31].ToString("X2") + "-" + buf[32].ToString("X2"));
Console.WriteLine("网络标识：" + buf[33].ToString("X2"));
Console.WriteLine("响声标识：" + buf[34].ToString("X2"));
Console.WriteLine("通讯模块号：" + buf[35].ToString("D") + "-" + buf[36].ToString("D") + "-" + buf[37].ToString("D") + "-" + buf[38].ToString("D"));
if (recv > 38)
{
string SerialNum = "";
for (int i = 38; i < recv; i++)
{
SerialNum = SerialNum + buf[i].ToString("X2");
}
Console.WriteLine("唯一设备标识：" + SerialNum + "\n");
}
break;
case 0xf3://读卡器发送的心跳数据包
break;
case 0xf8://
break;
case 0xc1://IC只读卡号返回
DisableSendAge(buf, RemoteIP, RemotePort); //确定接收到数据包，否则读卡器会发三次
Console.WriteLine("数据解析：接收到的信息是IC只读卡号数据包");
Console.WriteLine("功能码：" + buf[0].ToString("X2"));
Console.WriteLine("读卡器IP："+buf[1].ToString("D") + "." + buf[2].ToString("D") + "." + buf[3].ToString("D") + "." + buf[4].ToString("D"));
Console.WriteLine("机号：" + (buf[5] + buf[6] * 256).ToString("D"));
Console.WriteLine("包序号：" + (buf[7] + buf[8] * 256).ToString("D"));
Console.WriteLine("16进制卡号：" + buf[10].ToString("X2") + buf[11].ToString("X2") + buf[12].ToString("X2") + buf[13].ToString("X2"));
uint cardhao = (uint)(buf[13] * 256 * 256 * 256 + buf[12] * 256 * 256 + buf[11] * 256 + buf[10]);
string cardnum = cardhao.ToString("D10");
Console.WriteLine("换算成10进制卡号：" + cardnum);
if (recv > 14)
{
string SerialNum = "";
for (int i = 14; i < recv; i++)
{
SerialNum = SerialNum + buf[i].ToString("X2");
}
Console.WriteLine("唯一设备标识：" + SerialNum+"\n");
}
//此处可加入业务对数据库的查、增、删、改
SendDispBeep(cardnum, RemoteIP, RemotePort);
break;
case 0xc2://接收到IC读卡器的按键信息
case 0xd2://接收到ID读卡器的按键信息
break;
case 0xc3://IC全扇区读写器主动读取扇区信息返回
break;
case 0xc5://IC全扇区读写器指定区号、密码读扇区内容返回
break;
case 0xcd://IC全扇区读写器指定区号、密码写卡及更改密码返回
break;
case 0xcf://接收到IC卡离开读卡器的信息
case 0xdf://接收到ID卡离开读卡器的信息
break;
case 0xd1://ID读卡器读卡后返回
DisableSendAge(buf, RemoteIP, RemotePort); //确定接收到数据包，否则读卡器会发三次
Console.WriteLine("数据解析：接收到的信息是IC只读卡号数据包");
Console.WriteLine("功能码：" + buf[0].ToString("X2"));
Console.WriteLine("读卡器IP："+buf[1].ToString("D") + "." + buf[2].ToString("D") + "." + buf[3].ToString("D") + "." + buf[4].ToString("D"));
Console.WriteLine("机号：" + (buf[5] + buf[6] * 256).ToString("D"));
Console.WriteLine("包序号：" + (buf[7] + buf[8] * 256).ToString("D"));
Console.WriteLine("16进制卡号：" + buf[9].ToString("X2") + buf[10].ToString("X2") + buf[11].ToString("X2") + buf[12].ToString("X2"));
cardhao = (uint)(buf[12] * 256 * 256 * 256 + buf[11] * 256 * 256 + buf[10] * 256 + buf[9]);
cardnum = cardhao.ToString("D10");
Console.WriteLine("换算成10进制卡号：" + cardnum);
if (recv > 14)
{
string SerialNum = "";
for (int i = 14; i < recv; i++)
{
SerialNum = SerialNum + buf[i].ToString("X2");
}
Console.WriteLine("唯一设备标识：" + SerialNum+"\n");
}
//此处可加入业务对数据库的查、增、删、改
SendDispBeep(cardnum, RemoteIP, RemotePort);
break;
default:
break;
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
static void DisableSendAge(byte[] buf, string RemortIpStr, int RemortPortInt)
{ //回应已接收到数据包，否则读卡器会连发三次
buf[0] = 0x69;
IPEndPoint client = new IPEndPoint(IPAddress.Parse(RemortIpStr), RemortPortInt);
newsock.SendTo(buf, 9, SocketFlags.None, client);
string SendInf = "SendTo：" + (Convert.ToString(client) + " ").Substring(0, 21) + " Data：";
for (int i = 0; i < 9; i++)
{
SendInf = SendInf + buf[i].ToString("X2")+" ";
}
Console.WriteLine(SendInf);
}
static void SendDispBeep(string cardnum, string RemortIpStr, int RemortPortInt)
{ //向读卡器发送显示文字及蜂鸣响声
string DispInf = "卡号:" + cardnum + " " + DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss")+" ";//发送的显示文字
byte[] strlsansi = System.Text.Encoding.GetEncoding(936).GetBytes(DispInf);//显示文字转换为Ansi
byte[] Sendbyte=new byte[39];
Sendbyte[0] = 0x5a; //指令码
Sendbyte[1] = 0x00; //机号低位
Sendbyte[2] = 0x00; //机号高位，如果高低位都为0表示任意机号
Sendbyte[3] = 0x02; //蜂鸣响声代码，共12种不代响声代码
Sendbyte[4] = 0x14; //显示时长
for (int i = 0; i < 34; i++)
{
Sendbyte[i+5]=strlsansi[i];
}
IPEndPoint client = new IPEndPoint(IPAddress.Parse(RemortIpStr), RemortPortInt);
newsock.SendTo(Sendbyte, 39, SocketFlags.None, client);
string SendInf = "SendTo：" + (Convert.ToString(client) + " ").Substring(0, 21) + " Data：";
for (int i = 0; i < 39; i++)
{
SendInf = SendInf + Sendbyte[i].ToString("X2") + " ";
}
Console.WriteLine(SendInf+"\n");
}
}
}