window socket 根据IP地址获取主机名称

 WSADATA wsaData;
    int iResult; 
    struct hostent *remoteHost;
    struct in_addr addr = { 0 };
    iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
     
    addr.s_addr = inet_addr("好的。牛牛。妙妙。IP");

    remoteHost = gethostbyaddr((char*)&addr, 4, AF_INET);

    printf("host:%s",remoteHost->h_name);
    WSACleanup();