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nameserv: set hints for getaddrinfo() according to -4/-6 option

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Avoid sending unnecessary DNS requests when the -4/-6 option is
specified.
This commit is contained in:
Miroslav Lichvar 2017-10-04 11:03:11 +02:00
parent b8d546a0d1
commit f6539449c5
1 changed files with 13 additions and 1 deletions
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14
nameserv.c
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@ -53,7 +53,19 @@ DNS_Name2IPAddress(const char *name, IPAddr *ip_addrs, int max_addrs)
max_addrs = MIN(max_addrs, DNS_MAX_ADDRESSES);
memset(&hints, 0, sizeof (hints));
hints.ai_family = AF_UNSPEC;
switch (address_family) {
case IPADDR_INET4:
hints.ai_family = AF_INET;
break;
#ifdef FEAT_IPV6
case IPADDR_INET6:
hints.ai_family = AF_INET6;
break;
#endif
default:
hints.ai_family = AF_UNSPEC;
}
hints.ai_socktype = SOCK_STREAM;
result = getaddrinfo(name, NULL, &hints, &res);