C++ ping 源码

#include "StdAfx.h" #include "STPing.h" #ifdef _DEBUG #define new DEBUG_NEW #endif //构造函数 STPing::STPing(void) { hIcmp = LoadLibrary(_T("icmp.dll")); if(NULL != hIcmp) { pIcmpCreateFile = (PIcmpCreateFile)GetProcAddress(hIcmp, "IcmpCreateFile"); pIcmpSendEcho = (PIcmpSendEcho)GetProcAddress(hIcmp, "IcmpSendEcho"); pIcmpCloseHandle = (PIcmpCloseHandle)GetProcAddress(hIcmp, "IcmpCloseHandle"); } } //析构函数 STPing::~STPing(void) { FreeLibrary(hIcmp); } //功能：ping某个地址或者Ip，返回结果 //参数：v_pszDesAddress-目标域名或者IP //参数：v_usTimes-需要ping的次数 //参数：v_ulTimeout-超时时间，单位毫秒 //返回值：-1-发生异常,其他大于等于0的值表示未超时的次数 int STPing::Ping(const char *v_pszDesAdress, USHORT v_usTimes, ULONG v_ulTimeout) { ULONG ulDesIP = 0; int ret = 0; // 当传递的参数为域名时，解析该域名的IP ulDesIP = inet_addr(v_pszDesAdress); //域名 if(ulDesIP == INADDR_NONE) { // 解析传入域名的IP PHOSTENT pHostent = gethostbyname(v_pszDesAdress); if (pHostent == NULL) { return -1; } ulDesIP = *(DWORD *)pHostent->h_addr; } // 申请发送缓冲区 void *sendBuffer = new char[32]; if (sendBuffer == NULL) { return -1; } // 申请接收缓冲区 unsigned long replySize = sizeof(ICMP_ECHO_REPLY) + 32; void *replyBuffer = new char[replySize]; if (replyBuffer == NULL) { delete [] sendBuffer; sendBuffer = NULL; return -1; } PICMP_ECHO_REPLY pIcmpEchoReply = (PICMP_ECHO_REPLY)replyBuffer; // 获取ICMP echo所需句柄 HANDLE hIcmpFile = pIcmpCreateFile(); if (hIcmpFile == INVALID_HANDLE_VALUE) { delete [] sendBuffer; sendBuffer = NULL; delete [] replyBuffer; replyBuffer = NULL; return -1; } // 调用IcmpSendEcho，获取Ping值 for (int i=0; i<v_usTimes; i++) { DWORD returnval = pIcmpSendEcho(hIcmpFile, ulDesIP, sendBuffer, 32, NULL, replyBuffer, replySize, v_usTimes); if (pIcmpEchoReply->Status == 0) // 未超时 { ret++; //TRACE("<STPing::Ping>camera ip---%s,ping-ret---%d\n",v_pszDesAdress,ret); }else { //TRACE("<STPing::Ping>camera ip---%s,ping-ret---%d\n",v_pszDesAdress,pIcmpEchoReply->Status); } } //释放缓冲区，关闭句柄 delete[] replyBuffer; replyBuffer=NULL; delete[] sendBuffer; sendBuffer=NULL; pIcmpCloseHandle(hIcmpFile); return ret; } int STPing::Ping( ULONG v_ulDesAdress, USHORT v_usTimes, ULONG v_ulTimeout ) { ULONG ulDesIP = v_ulDesAdress; int ret = 0; // 申请发送缓冲区 void *sendBuffer = new char[32]; if (sendBuffer == NULL) { return -1; } // 申请接收缓冲区 unsigned long replySize = sizeof(ICMP_ECHO_REPLY) + 32; void *replyBuffer = new char[replySize]; if (replyBuffer == NULL) { delete [] sendBuffer; sendBuffer = NULL; return -1; } PICMP_ECHO_REPLY pIcmpEchoReply = (PICMP_ECHO_REPLY)replyBuffer; // 获取ICMP echo所需句柄 HANDLE hIcmpFile = pIcmpCreateFile(); if (hIcmpFile == INVALID_HANDLE_VALUE) { delete [] sendBuffer; sendBuffer = NULL; delete [] replyBuffer; replyBuffer = NULL; return -1; } // 调用IcmpSendEcho，获取Ping值 for (int i=0; i<v_usTimes; i++) { DWORD returnval = pIcmpSendEcho(hIcmpFile, ulDesIP, sendBuffer, 32, NULL, replyBuffer, replySize, v_usTimes); if (pIcmpEchoReply->Status == 0) // 未超时 { ret++; } } //释放缓冲区，关闭句柄 delete[] replyBuffer; replyBuffer=NULL; delete[] sendBuffer; sendBuffer=NULL; pIcmpCloseHandle(hIcmpFile); return ret; }