如何ping网络C++编写

蔚落 2021-11-05 21:12 292阅读 0赞

网络看到别人写的，然后学习了一下，可以用vs2015测试通过  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzM2MDcwNw_size_16_color_FFFFFF_t_70]

(ping.h)
    #pragma once
    
    //在默认windows.h会包含winsock.h，当你包含winsock2.h就会冲突，因此在包含windows.h前需要定义一个宏,#define WIN32_LEAN_AND_MEAN ;去除winsock.h
    //要么将#include <winsock2.h>放在#include<windows.h>前面或者直接去掉#include<windows.h>
    
    #include <winsock2.h>
    #pragma comment(lib, "WS2_32")    // 链接到WS2_32.lib
    
    #define DEF_PACKET_SIZE 32
    #define ECHO_REQUEST 8
    #define ECHO_REPLY 0
    
    struct IPHeader
    {
    	BYTE m_byVerHLen; //4位版本+4位首部长度
    	BYTE m_byTOS; //服务类型
    	USHORT m_usTotalLen; //总长度
    	USHORT m_usID; //标识
    	USHORT m_usFlagFragOffset; //3位标志+13位片偏移
    	BYTE m_byTTL; //TTL
    	BYTE m_byProtocol; //协议
    	USHORT m_usHChecksum; //首部检验和
    	ULONG m_ulSrcIP; //源IP地址
    	ULONG m_ulDestIP; //目的IP地址
    };
    
    struct ICMPHeader
    {
    	BYTE m_byType; //类型
    	BYTE m_byCode; //代码
    	USHORT m_usChecksum; //检验和 
    	USHORT m_usID; //标识符
    	USHORT m_usSeq; //序号
    	ULONG m_ulTimeStamp; //时间戳（非标准ICMP头部）
    };
    
    struct PingReply
    {
    	USHORT m_usSeq;
    	DWORD m_dwRoundTripTime;
    	DWORD m_dwBytes;
    	DWORD m_dwTTL;
    };
    
    
    
    class cppPing
    {
    public:
    	cppPing();
    	~cppPing();
    	BOOL Ping(DWORD dwDestIP, PingReply *pPingReply = NULL, DWORD dwTimeout = 1000);
    	BOOL Ping(char *szDestIP, PingReply *pPingReply = NULL, DWORD dwTimeout = 1000);
    	int domain2p(char* hostname, char*IP);
    private:
    	BOOL PingCore(DWORD dwDestIP, PingReply *pPingReply, DWORD dwTimeout);
    	USHORT CalCheckSum(USHORT *pBuffer, int nSize);
    	ULONG GetTickCountCalibrate();
    private:
    	SOCKET m_sockRaw;//套接字
    	WSAEVENT m_event;//异步事件
    	USHORT m_usCurrentProcID;//当前进程
    	char *m_szICMPData;//发送报文
    	BOOL m_bIsInitSucc;//初始化标志
    
    	addrinfo hints, *res;
    	in_addr addr;
    	int err;
    private:
    	static USHORT s_usPacketSeq;
    };

#include "stdafx.h"
    #include "cppPing.h"
    #include <ws2tcpip.h>
    #include <iostream>
    
    #pragma warning(disable:4996)；
    USHORT cppPing::s_usPacketSeq = 0;
    //构造函数
    cppPing::cppPing() :m_szICMPData(NULL), m_bIsInitSucc(FALSE)
    {
    	WSADATA WSAData;
    	int Ret = -1;
    	//带有WSA前缀的都是Winsock2版本的API函数
    	Ret=WSAStartup(MAKEWORD(2, 0), &WSAData);
    	if(Ret!=0)
    	{
    		/*如果初始化不成功则报错，不能用GetLastError()，因为WinSocket没有加载*/
    		printf("WSAStartup() failed with err: %d\n", Ret);
    		return;
    	}
    	else
    	{
    		printf("WSAStartup() success!\n");
    	}
    
    	//创建一个初始状态为失信的匿名的需要手动重置的事件对象
    	//如果函数成功，则返回值即是事件对象的句柄。
    	//如果函数失败，返回WSA_INVALID_EVENT。应用程序可通过调用WSAGetLastError()函数获取进一步的错误信息。
    	m_event = WSACreateEvent();
    	//是获取当前进程一个唯一的标识符。
    	m_usCurrentProcID = (USHORT)GetCurrentProcessId();
    	//创建套接字
    	m_sockRaw = WSASocket(AF_INET, SOCK_RAW, IPPROTO_ICMP, NULL, 0, 0);
    	if (m_sockRaw == INVALID_SOCKET)
    	{
    		std::cerr << "WSASocket() failed:" << WSAGetLastError() << std::endl;  //10013 以一种访问权限不允许的方式做了一个访问套接字的尝试。
    	}
    	else
    	{
    		//事件与套接字绑定
    		WSAEventSelect(m_sockRaw, m_event, FD_READ);
    		m_bIsInitSucc = TRUE;//初始化成功
    		//为发送ICMP报文分配空间
    		m_szICMPData = (char*)malloc(DEF_PACKET_SIZE + sizeof(ICMPHeader));
    		//判断
    		if (m_szICMPData == NULL)
    		{
    			m_bIsInitSucc = FALSE;
    		}
    	}
    }
    
    cppPing::~cppPing()
    {
    	WSACloseEvent(m_event);
    	closesocket(m_sockRaw);
    	WSACleanup();
    
    	if (NULL != m_szICMPData)
    	{
    		free(m_szICMPData);
    		m_szICMPData = NULL;
    	}
    }
    
    BOOL cppPing::Ping(DWORD dwDestIP, PingReply *pPingReply, DWORD dwTimeout)
    {
    	return PingCore(dwDestIP, pPingReply, dwTimeout);
    }
    
    BOOL cppPing::Ping(char *szDestIP, PingReply *pPingReply, DWORD dwTimeout)
    {
    	if (NULL != szDestIP)
    	{
    		//inet_addr将点分十进制转换为网络端数据
    		return PingCore(inet_addr(szDestIP), pPingReply, dwTimeout);
    	}
    	return FALSE;
    }
    
    
    
    int cppPing::domain2p(char* hostname, char*IP)
    {
    	memset(&hints, 0, sizeof(addrinfo));
    	hints.ai_socktype = SOCK_STREAM;
    	hints.ai_family = AF_INET;
    
    	if ((err = getaddrinfo(hostname, NULL, &hints, /*_out*/&res)) != 0)
    	{
    		printf("error %d : %s\n", err, gai_strerror(err));
    		return 1;
    	}
    	addr.s_addr = ((sockaddr_in*)(res->ai_addr))->sin_addr.s_addr;
    	inet_ntop(AF_INET, (void *)&addr, IP, 16);
    	printf("ip addresss: %s\n", IP);
    	//free res
    	freeaddrinfo(res);
    	return 0;
    }
    
    BOOL cppPing::PingCore(DWORD dwDestIP, PingReply *pPingReply, DWORD dwTimeout)
    {
    	//判断初始化是否成功
    	if (!m_bIsInitSucc)
    	{
    		return FALSE;
    	}
    
    	//配置SOCKET
    	sockaddr_in sockaddrDest;
    	//IPV4
    	sockaddrDest.sin_family = AF_INET;
    	sockaddrDest.sin_addr.s_addr = dwDestIP;
    	int nSockaddrDestSize = sizeof(sockaddrDest);
    
    	//构建ICMP包
    	int nICMPDataSize = DEF_PACKET_SIZE + sizeof(ICMPHeader);
    	//填充时间戳
    	ULONG ulSendTimestamp = GetTickCountCalibrate();
    	//ULONG ulSendTimestamp = GetTickCount();//测试
    	/*std::cout << "first;  "
    		<< ulSendTimestamp << std::endl;*/
    
    
    	//序号
    	USHORT usSeq = ++s_usPacketSeq;
    	//清空结构体
    	memset(m_szICMPData, 0, nICMPDataSize);
    	//强制转换结构体为ICMP报头
    	ICMPHeader *pICMPHeader = (ICMPHeader*)m_szICMPData;
    	//Type：类型，type=8表示响应请求报文，type=0表示响应应答报文。
    	pICMPHeader->m_byType = ECHO_REQUEST;
    	//Code：代码，与type组合，表示具体的信息
    	pICMPHeader->m_byCode = 0;
    	//Identifier：标识符，这个一般填入本进程的标识符
    	pICMPHeader->m_usID = m_usCurrentProcID;
    	//序号
    	pICMPHeader->m_usSeq = usSeq;
    	//时间戳
    	pICMPHeader->m_ulTimeStamp = ulSendTimestamp;
    	//检验和
    	pICMPHeader->m_usChecksum = CalCheckSum((USHORT*)m_szICMPData, nICMPDataSize);
    
    	//发送ICMP报文
    	if (sendto(m_sockRaw, m_szICMPData, nICMPDataSize, 0, (struct sockaddr*)&sockaddrDest, nSockaddrDestSize) == SOCKET_ERROR)
    	{
    		return FALSE;
    	}
    
    	//判断是否需要接收相应报文
    	if (pPingReply == NULL)
    	{
    		return TRUE;
    	}
    
    	char recvbuf[256] = { "\0" };
    	while (TRUE)
    	{
    		//接收响应报文
    		//if (WSAWaitForMultipleEvents(1, &m_event, FALSE, 100, FALSE) != WSA_WAIT_TIMEOUT)
    		DWORD Ret;
    		Ret = WSAWaitForMultipleEvents(1, &m_event, FALSE, 1000, FALSE);
    		if (Ret == WSA_WAIT_FAILED)
    		{
    			printf("WSAWaitForMultipleEvents failed\n");
    			return FALSE;
    		}
    		else if (Ret == WSA_WAIT_TIMEOUT)
    		{
    			printf("WSAWaitForMultipleEvents timeout\n");
    			return FALSE;
    		}
    		else
    		{
    			WSANETWORKEVENTS netEvent;
    			WSAEnumNetworkEvents(m_sockRaw, m_event, &netEvent);
    			//判断事件
    			if (netEvent.lNetworkEvents & FD_READ)
    			{
    				//获取时间
    				//Sleep(1000);//测试
    				ULONG nRecvTimestamp = GetTickCountCalibrate();
    				
    				int nPacketSize = recvfrom(m_sockRaw, recvbuf, 256, 0, (struct sockaddr*)&sockaddrDest, &nSockaddrDestSize);
    				if (nPacketSize != SOCKET_ERROR)
    				{
    					//剥除IP报头
    					IPHeader *pIPHeader = (IPHeader*)recvbuf;
    					//头部长度IHL：首部长度。因为IP的头部不是定长的，所以需要这个信息进行IP包的解析，从而找到Data字段的起始点。
    					//另外注意这个IHL是以4个字节为单位的，所以首部实际长度是IHL * 4字节。
    					//取出第四位IHL，这是IP报头长度
    					USHORT usIPHeaderLen = (USHORT)((pIPHeader->m_byVerHLen & 0x0f) * 4);
    					//locate ICMP head location
    					ICMPHeader *pICMPHeader = (ICMPHeader*)(recvbuf + usIPHeaderLen);
    					//判断是否为当前进程发送的ICMP
    					if (pICMPHeader->m_usID == m_usCurrentProcID //是当前进程发出的报文
    						&& pICMPHeader->m_byType == ECHO_REPLY //是ICMP响应报文
    						&& pICMPHeader->m_usSeq == usSeq //是本次请求报文的响应报文
    						)
    					{
    						//填充reply结构体，获取想要的信息
    						//序号
    						pPingReply->m_usSeq = usSeq;
    						//
    						pPingReply->m_dwRoundTripTime = nRecvTimestamp - pICMPHeader->m_ulTimeStamp;
    					/*	std::cout << "second;  "
    							<< pICMPHeader->m_ulTimeStamp << std::endl;*/
    						pPingReply->m_dwBytes = nPacketSize - usIPHeaderLen - sizeof(ICMPHeader);
    						pPingReply->m_dwTTL = pIPHeader->m_byTTL;
    						return TRUE;
    					}
    				}
    			}
    		}
    		//超时
    		if (GetTickCountCalibrate() - ulSendTimestamp >= dwTimeout)
    		{
    			return FALSE;
    		}
    	}
    }
    
    USHORT cppPing::CalCheckSum(USHORT *pBuffer, int nSize)
    {
    	unsigned long ulCheckSum = 0;
    	while (nSize > 1)
    	{
    		ulCheckSum += *pBuffer++;
    		nSize -= sizeof(USHORT);
    	}
    	if (nSize)
    	{
    		ulCheckSum += *(UCHAR*)pBuffer;
    	}
    
    	ulCheckSum = (ulCheckSum >> 16) + (ulCheckSum & 0xffff);
    	ulCheckSum += (ulCheckSum >> 16);
    
    	return (USHORT)(~ulCheckSum);
    }
    
    ULONG cppPing::GetTickCountCalibrate()
    {
    	//GetTickCount()这个函数精度非常差，误差在100ms左右
    	//静态，值初始化一次
    	static ULONG s_ulFirstCallTick = 0;
    	static LONGLONG s_ullFirstCallTickMS = 0;
    	//系统事件
    	SYSTEMTIME systemtime;
    	//文件时间
    	FILETIME filetime;
    	/*
    	typedef struct _FILETIME {
    	DWORD dwLowDateTime;
    	DWORD dwHighDateTime;
    	} FILETIME, *PFILETIME;
    	typedef struct _SYSTEMTIME {
    	WORD wYear;
    	WORD wMonth;
    	WORD wDayOfWeek;
    	WORD wDay;
    	WORD wHour;
    	WORD wMinute;
    	WORD wSecond;
    	WORD wMilliseconds;
    	} SYSTEMTIME, *PSYSTEMTIME;
    	*/
    
    	//获取本地时间，也就是系统设置的当前时间
    	//GetSystemTime:所返回的是UTC.格林威治时间
    	GetLocalTime(&systemtime);
    	//A file time is a 64-bit value that represents the number of 100-nanosecond 
    	//intervals that have elapsed since 12:00 A.M. January 1, 1601 Coordinated Universal Time (UTC)
    	SystemTimeToFileTime(&systemtime, &filetime);
    	//大结构体数据
    	LARGE_INTEGER liCurrentTime;
    	liCurrentTime.HighPart = filetime.dwHighDateTime;
    	liCurrentTime.LowPart = filetime.dwLowDateTime;
    	//合并大结构体数据，合并后为ms
    	LONGLONG llCurrentTimeMS = liCurrentTime.QuadPart / 10000;
    
    	if (s_ulFirstCallTick == 0)
    	{
    		//它返回从操作系统启动到当前所经过的毫秒数，这个是静态局部变量
    		s_ulFirstCallTick = GetTickCount();
    	}
    	if (s_ullFirstCallTickMS == 0)
    	{
    		//静态局部变量，第一次将sendICMP报文时间赋值
    
    		s_ullFirstCallTickMS = llCurrentTimeMS;
    	}
    	//第一次开机启动到第一次获取时间+（第n次-第1次间隔时间）
    	return s_ulFirstCallTick + (ULONG)(llCurrentTimeMS - s_ullFirstCallTickMS);//ms
    }

// myPing.cpp : 定义控制台应用程序的入口点。
    //
    
    #include "stdafx.h"
    #include <winsock2.h>
    #include <stdio.h>
    #include "cppPing.h"
    #include <ws2tcpip.h>
    #include <vector>
    #include <iostream>
    #include<algorithm>
    #include <numeric>
    
    
    
    int main(void)
    {
    	cppPing objPing;
    	char IP[16];
    	bool pingOK;
    	int send_Cnt = 0;
    	int failed_Cnt = 0;
    	std::vector<int>  delayTm;
    	int delayMaxTm = -1;
    	int delayMinTm = -1;
    	double delayAverTm = -1;
    
    	//char *szDestIP = "192.168.16.8";
    	char* hostname = "www.baidu.com";
    	objPing.domain2p(hostname, IP);
    
    	PingReply reply;
    
    	//printf("Pinging %s with %d bytes of data:\n", szDestIP, DEF_PACKET_SIZE);
    	char sIP[17] = { 0 };
    	memcpy(sIP, IP, 16);
    	printf("Pinging %s with %d bytes of data:\n", sIP, DEF_PACKET_SIZE);
    	do
    	{
    		pingOK = objPing.Ping(IP, &reply);
    		if (pingOK)
    		{
    			printf("Reply from %s: bytes=%d time=%ldms\t TTL=%ld\n", sIP, reply.m_dwBytes, reply.m_dwRoundTripTime, reply.m_dwTTL);
    			delayTm.push_back((int)reply.m_dwRoundTripTime);
    
    		}
    		else
    		{
    			printf("ping timeout...\n");
    			delayTm.push_back(0);
    			++failed_Cnt;
    		}
    		++send_Cnt;
    		Sleep(50);
    	} while (send_Cnt < 5);
    
    	delayMaxTm = *(max_element(delayTm.begin(), delayTm.end()));
    	delayMinTm = *(min_element(delayTm.begin(), delayTm.end()));
    	delayAverTm = accumulate(delayTm.begin(), delayTm.end(), 0.0) / delayTm.size();
    
    	printf("%s统计信息:\n", sIP);
    	printf("数据包  已发送：%d,  已接收： %d\n", send_Cnt, send_Cnt - failed_Cnt);
    	printf("delayMaxTm =%d ms\n", delayMaxTm);
    	printf("delayMinTm = %d ms\n", delayMinTm);
    	printf("delayAverTm = %.2f ms\n", delayAverTm);
    
    	if (failed_Cnt >= 0 && failed_Cnt < 5)
    	{
    		if (delayAverTm > 0 && delayAverTm < 20)//
    		{
    			printf("信号较强\n");
    			system("pause");
    			return 555;
    		}
    		else if (delayAverTm >= 20 && delayAverTm < 35)//
    		{
    			printf("信号强\n");
    			system("pause");
    			return 444;
    		}
    		else if (delayAverTm >= 35 && delayAverTm < 50)//
    		{
    			printf("信号一般\n");
    			system("pause");
    			return 333;
    		}
    		else if (delayAverTm >= 50 && delayAverTm < 75)//
    		{
    			printf("信号弱\n");
    			system("pause");
    			return 222;
    		}
    		else
    		{
    			printf("信号微弱\n");
    			system("pause");
    			return 111;
    		}
    	}
    	else
    	{
    		printf("无信号\n");
    		return 000;
    	}
    
    	
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzM2MDcwNw_size_16_color_FFFFFF_t_70]: /images/20211104/1321116463d94b759f149a61d8764c32.png