/* ares_dup() duplicates a channel handle with all its options and returns a
new channel handle */
int ares_dup(ares_channel *dest, ares_channel src)
{
struct ares_options opts;
struct ares_addr_node *servers;
int ipv6_nservers = 0;
int i, rc;
int optmask;
*dest = NULL; /* in case of failure return NULL explicitly */
/* First get the options supported by the old ares_save_options() function,
which is most of them */
rc = ares_save_options(src, &opts, &optmask);
if(rc)
return rc;
/* Then create the new channel with those options */
rc = ares_init_options(dest, &opts, optmask);
/* destroy the options copy to not leak any memory */
ares_destroy_options(&opts);
if(rc)
return rc;
/* Now clone the options that ares_save_options() doesn't support. */
(*dest)->sock_create_cb = src->sock_create_cb;
(*dest)->sock_create_cb_data = src->sock_create_cb_data;
strncpy((*dest)->local_dev_name, src->local_dev_name, sizeof(src->local_dev_name));
(*dest)->local_ip4 = src->local_ip4;
memcpy((*dest)->local_ip6, src->local_ip6, sizeof(src->local_ip6));
/* Full name server cloning required when not all are IPv4 */
for (i = 0; i < src->nservers; i++)
{
if (src->servers[i].addr.family != AF_INET) {
ipv6_nservers++;
break;
}
}
if (ipv6_nservers) {
rc = ares_get_servers(src, &servers);
if (rc != ARES_SUCCESS)
return rc;
rc = ares_set_servers(*dest, servers);
ares_free_data(servers);
if (rc != ARES_SUCCESS)
return rc;
}
return ARES_SUCCESS; /* everything went fine */
}
void
cert_updater_stop(ProxyContext * const proxy_context)
{
CertUpdater * const cert_updater = &proxy_context->cert_updater;
if (cert_updater->has_cert_timer) {
cert_updater->has_cert_timer = 0;
uv_timer_stop(&cert_updater->cert_timer);
}
uv_ares_destroy(proxy_context->event_loop, cert_updater->ar_channel);
ares_destroy_options(&cert_updater->ar_options);
}
