Question

gethostbyname 函数已经过时，怎么由getaddrinfo替换

Answer 1

之前使用gethostbyname 很简单，类似这样：
struct hostent *remoteHost;
struct in_addr addr;

if ( ( remoteHost = gethostbyname( hostname ) ) == NULL ){
xxxx;
}
else{
if (remoteHost->h_addrtype == AF_INET)
{
while (remoteHost->h_addr_list[i] != 0) {
addr.s_addr = *(u_long *) remoteHost->h_addr_list[i++];
printf("\tIP Address #%d: %s\n", i, inet_ntoa(addr));
}
}
}