一、概述

现在来搞定DNS域名解析，其实这是前面一篇文章C++实现Ping里面的遗留问题，要干的活是ping的过程中画红线的部分：

cmd下域名解析的命令是nslookup，比如“nslookup "; std::vector<ULONG> veculIPList; std::vector<std::string> vecstrIPList; std::vector<std::string> vecCNameList; ULONG ulTimeSpent = 0; CDNSLookup dnslookup; BOOL bRet = dnslookup.DNSLookup(inet_addr("114.114.114.114"), szDomainName, &vecstrIPList, &vecCNameList, 1000, &ulTimeSpent); printf("DNSLookup result (%s):\n", szDomainName); if (!bRet) { printf("timeout!\n"); return -1; } for (int i = 0; i != veculIPList.size(); ++i) { printf("IP%d(ULONG) = %u\n", i + 1, veculIPList[i]); } for (int i = 0; i != vecstrIPList.size(); ++i) { printf("IP%d(string) = %s\n", i + 1, vecstrIPList[i].c_str()); } for (int i = 0; i != vecCNameList.size(); ++i) { printf("CName%d = %s\n", i + 1, vecCNameList[i].c_str()); } printf("time spent = %ums\n", ulTimeSpent); return 0;}

以上就是C++实现DNS域名解析的全部内容，希望对大家的学习有所帮助。