windows C++通过Ping查看某个IP是否在线

注：以下代码从网上某位大神处摘抄下来，此处仅做记录使用，不做它用

原大神文章链接：C++验证IP是否可以PING通 - 梦雨轩 - 博客园 (cnblogs.com)

 

 1 #include <WinSock2.h>
 2 #include <iphlpapi.h>
 3 #include <iostream>
 4 
 5 #pragma comment(lib,"Iphlpapi.lib")
 6 #pragma comment(lib,"Ws2_32.lib")
 7 typedef HANDLE(WINAPI* ICMPCREATEFILE)(VOID);
 8 typedef INT(WINAPI* ICMPCLOSEHANDLE)(HANDLE);
 9 typedef DWORD(WINAPI* ICMPSENDECHO)(HANDLE, DWORD, LPVOID, WORD, PIP_OPTION_INFORMATION, LPVOID, DWORD, DWORD);
10 
11 //定义三个指针函数
12 ICMPCREATEFILE pIcmpCreateFile;
13 ICMPCLOSEHANDLE pIcmpCloseHandle;
14 ICMPSENDECHO pIcmpSendEcho;
15 // 函数功能：初始化ICMP函数：
16 BOOL InitIcmp()
17 {
18 HINSTANCE hIcmp = LoadLibrary(L"ICMP.DLL");
19 if (hIcmp == NULL)
20 {
21 return false;
22 }
23 pIcmpCreateFile = (ICMPCREATEFILE)GetProcAddress(hIcmp, "IcmpCreateFile");
24 pIcmpCloseHandle = (ICMPCLOSEHANDLE)GetProcAddress(hIcmp, "IcmpCloseHandle");
25 pIcmpSendEcho = (ICMPSENDECHO)GetProcAddress(hIcmp, "IcmpSendEcho");
26 if ((pIcmpCreateFile == NULL) || (pIcmpCloseHandle == NULL) || (pIcmpSendEcho == NULL))
27 return false;
28 return true;
29 }
30 
31 // 函数功能：判断是否能ping通IP
32 // 函数参数：IP地址或域名
33 INT ICMPPing(char* host)
34 {
35 DWORD timeOut = 1000; //设置超时
36 ULONG hAddr = inet_addr(host); //如果是IP地址就直接转换
37 if (hAddr == INADDR_NONE)
38 {
39 hostent* hp = gethostbyname(host); //如果是域名就用DNS解析出IP地址
40 if (hp)
41 memcpy(&hAddr, hp->h_addr_list, hp->h_length); //IP地址
42 else
43 {
44 return 0;
45 }
46 }
47 HANDLE hIp = pIcmpCreateFile();
48 IP_OPTION_INFORMATION ipoi;
49 memset(&ipoi, 0, sizeof(IP_OPTION_INFORMATION));
50 ipoi.Ttl = 128; //Time-To-Live
51 
52 unsigned char pSend[36]; //发送包
53 memset(pSend, 'E', 32);
54 
55 int repSize = sizeof(ICMP_ECHO_REPLY) + 32;
56 unsigned char pReply[100]; //接收包
57 ICMP_ECHO_REPLY* pEchoReply = (ICMP_ECHO_REPLY*)pReply;
58 
59 DWORD nPackets = pIcmpSendEcho(hIp, hAddr, pSend, 32, &ipoi, pReply, repSize, timeOut); //发送ICMP数据报文
60 
61 if (pEchoReply->Status != 0) //超时，可能是主机禁用了ICMP 或者目标主机不存在
62 {
63 pIcmpCloseHandle(hIp);
64 return 0;
65 }
66 
67 pIcmpCloseHandle(hIp);
68 return 1;
69 }
70 int main()
71 {
72 InitIcmp();
73 
74 int ping2C = ICMPPing("10.192.168.1");
75 std::string stDevInfo = "1234";
76 for (int i = 0; i < 4; i++)
77 {
78 
79 //char cPwd[2] = {0};
80 //cPwd[0] = stDevInfo[i];
81 char cPwd = stDevInfo[i];
82 
83 std::cout << "cPwd = " << &cPwd << std::endl;
84 int nT = (char)strtol(&cPwd, NULL, 16);
85 std::cout << "nT =" << nT << std::endl;
86 
87 }
88 
89 system("pause");
90 return 0;
91 }

 

posted @ 2023-03-14 16:36  冥天笑  阅读(283)  评论(0)  编辑  收藏  举报