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feature: support response mode: first-ping, fastest-ip, fastest-response

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This commit is contained in:
Nick Peng
2022-07-25 22:12:20 +08:00
parent d3bbd8edd7
commit ab415f2ee9
9 changed files with 195 additions and 34 deletions
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17
src/dns_conf.c
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@@ -59,6 +59,14 @@ int dns_conf_tcp_idle_time = 120;
int dns_conf_max_reply_ip_num = DNS_MAX_REPLY_IP_NUM;
static struct config_enum_list dns_conf_response_mode_enum[] = {
{"first-ping", DNS_RESPONSE_MODE_FIRST_PING_IP},
{"fastest-ip", DNS_RESPONSE_MODE_FASTEST_IP},
{"fastest-response", DNS_RESPONSE_MODE_FASTEST_RESPONSE},
{0, 0}};
enum response_mode_type dns_conf_response_mode;
/* cache */
int dns_conf_cachesize = DEFAULT_DNS_CACHE_SIZE;
int dns_conf_prefetch = 0;
@@ -1022,7 +1030,7 @@ static int _config_bind_ip(int argc, char *argv[], DNS_BIND_TYPE type)
bind_ip->flags = server_flag;
bind_ip->group = group;
dns_conf_bind_ip_num++;
tlog(TLOG_DEBUG, "bind ip %s, type:%d, flag: %X", ip, type, server_flag);
tlog(TLOG_DEBUG, "bind ip %s, type: %d, flag: %X", ip, type, server_flag);
return 0;
@@ -1897,6 +1905,7 @@ static struct config_item _config_item[] = {
CONF_INT("rr-ttl-max", &dns_conf_rr_ttl_max, 0, CONF_INT_MAX),
CONF_INT("rr-ttl-reply-max", &dns_conf_rr_ttl_reply_max, 0, CONF_INT_MAX),
CONF_INT("max-reply-ip-num", &dns_conf_max_reply_ip_num, 1, CONF_INT_MAX),
CONF_ENUM("response-mode", &dns_conf_response_mode, &dns_conf_response_mode_enum),
CONF_YESNO("force-AAAA-SOA", &dns_conf_force_AAAA_SOA),
CONF_YESNO("force-no-CNAME", &dns_conf_force_no_cname),
CONF_CUSTOM("force-qtype-SOA", _config_qtype_soa, NULL),
@@ -2069,6 +2078,12 @@ static int _dns_conf_load_post(void)
{
_dns_conf_speed_check_mode_verify();
if (dns_conf_cachesize == 0 && dns_conf_response_mode == DNS_RESPONSE_MODE_FASTEST_RESPONSE) {
dns_conf_response_mode = DNS_RESPONSE_MODE_FASTEST_IP;
tlog(TLOG_WARN, "force set response to %s as cache size is 0",
dns_conf_response_mode_enum[dns_conf_response_mode].name);
}
return 0;
}