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C++获取本机IP地址

2014-11-23 21:54:18 来源: 作者: 【大中小】浏览:12次

std::string GetLocalIpAddress()
{
WORD wVersionRequested = MAKEWORD(2, 2);
WSADATA wsaData;
if (WSAStartup(wVersionRequested, &wsaData) != 0)
return "";
char local[255] = {0};
gethostname(local, sizeof(local));
hostent* ph = gethostbyname(local);
if (ph == NULL)
return "";
in_addr addr;
memcpy(&addr, ph->h_addr_list[0], sizeof(in_addr));
std::string localIP;
localIP.assign(inet_ntoa(addr));
WSACleanup();
return localIP;
}


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