int _ResolveIPv4Address(const char* ipv4_str, char* buffer, int bufferSize) { struct addrinfo hints, *res; memset(&hints, 0, sizeof(hints)); hints.ai_family = PF_UNSPEC; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_DEFAULT; int error = getaddrinfo(ipv4_str, "http", &hints, &res); if (error) { /*NOTREACHED*/ return error; } // get the first if (res->ai_family == AF_INET6) { // get ipv6 address struct sockaddr_in6* ipv6 = (struct sockaddr_in6*)res->ai_addr; inet_ntop(AF_INET6, &ipv6->sin6_addr, buffer, bufferSize); } else { // get ipv4 address struct sockaddr_in* ipv4 = (struct sockaddr_in*)res->ai_addr; inet_ntop(AF_INET, &ipv4->sin_addr, buffer, bufferSize); } freeaddrinfo(res); return 0; }