도메인에서 IP 얻어내기

도메인에서 IP얻어 내는 코드이다.

// GetIPAddressFromSocket.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <string> #include <list> #include <winsock2.h> #include <ws2tcpip.h> #include <MSWSock.h> #pragma comment(lib, "ws2_32.lib") namespace std { #ifdef UNICODE typedef wstring tstring; #else typedef string tstring; #endif } bool getDomainIP(const char* domain, __out std::list<std::tstring>& ip_list) { struct hostent *pHost = nullptr; struct in_addr *pAddr = nullptr; pHost = gethostbyname(domain); if(pHost == nullptr) { return false; } while(*pHost->h_addr_list != nullptr){ pAddr = reinterpret_cast<in_addr *>(*(pHost->h_addr_list)); const char* ip = inet_ntoa(*pAddr); pHost->h_addr_list++; #ifdef UNICODE wchar_t wip[64]; mbstowcs(wip, ip, strlen(ip)+1); ip_list.push_back(wip); #else ip_list.push_back(ip); #endif } return true; } bool NetworkStartup() { WSADATA wsaData; if (0 != WSAStartup(WINSOCK_VERSION, &wsaData)) { return false; } return true; } void NetworkFinish() { WSACleanup(); } int _tmain(int argc, _TCHAR* argv[]) { if (false == NetworkStartup()) { return 0; } std::list<std::tstring> ipAddress; getDomainIP("www.google.com", ipAddress); for each(const auto& ip in ipAddress) { _tprintf(_T("ip address(%s)\n"), ip.c_str()); } NetworkFinish(); return 0; }