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resolve with c-ares: don't resolve IPv6 when not working

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If the Curl_ipv6works() function says no, there is no reason to try AAAA
names even if libcurl was built with IPv6 support enabled.

Bug: http://curl.haxx.se/mail/lib-2012-03/0045.html
This commit is contained in:
Maxim Prohorov 2012-03-13 22:52:39 +01:00 committed by Daniel Stenberg
parent e25590a2b3
commit 97386c3c84
1 changed files with 15 additions and 6 deletions
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9
lib/asyn-ares.c
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@ -582,6 +582,7 @@ Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn,
res->last_status = ARES_ENOTFOUND;
#ifdef ENABLE_IPV6 /* CURLRES_IPV6 */
if(family == PF_UNSPEC) {
if(Curl_ipv6works()) {
res->num_pending = 2;
/* areschannel is already setup in the Curl_open() function */
@ -590,6 +591,14 @@ Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn,
ares_gethostbyname((ares_channel)data->state.resolver, hostname,
PF_INET6, query_completed_cb, conn);
}
else {
res->num_pending = 1;
/* areschannel is already setup in the Curl_open() function */
ares_gethostbyname((ares_channel)data->state.resolver, hostname,
PF_INET, query_completed_cb, conn);
}
}
else
#endif /* CURLRES_IPV6 */
{