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dns-debug: support record fail packet for debugging

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This commit is contained in:
Nick Peng
2022-07-31 15:49:10 +08:00
parent ab415f2ee9
commit ac042e8bee
10 changed files with 363 additions and 56 deletions
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16
src/dns_client.c
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@@ -574,7 +574,8 @@ errout:
return -1;
}
static int _dns_client_add_to_pending_group(const char *group_name, char *server_ip, int port, dns_server_type_t server_type)
static int _dns_client_add_to_pending_group(const char *group_name, char *server_ip, int port,
dns_server_type_t server_type)
{
struct dns_server_pending *item = NULL;
struct dns_server_pending *tmp = NULL;
@@ -621,8 +622,8 @@ errout:
}
/* add server to group */
static int _dns_client_add_to_group_pending(const char *group_name, char *server_ip, int port, dns_server_type_t server_type,
int ispending)
static int _dns_client_add_to_group_pending(const char *group_name, char *server_ip, int port,
dns_server_type_t server_type, int ispending)
{
struct dns_server_info *server_info = NULL;
@@ -1591,8 +1592,11 @@ static int _dns_client_recv(struct dns_server_info *server_info, unsigned char *
len = dns_decode(packet, DNS_PACKSIZE, inpacket, inpacket_len);
if (len != 0) {
char host_name[DNS_MAX_CNAME_LEN];
tlog(TLOG_WARN, "decode failed, packet len = %d, tc = %d, id = %d, from = %s\n", inpacket_len, packet->head.tc,
tlog(TLOG_INFO, "decode failed, packet len = %d, tc = %d, id = %d, from = %s\n", inpacket_len, packet->head.tc,
packet->head.id, gethost_by_addr(host_name, sizeof(host_name), from));
if (dns_save_fail_packet) {
dns_packet_save(dns_save_fail_packet_dir, "client", host_name, inpacket, inpacket_len);
}
return -1;
}
@@ -1721,7 +1725,7 @@ static int _DNS_client_create_socket_tcp(struct dns_server_info *server_info)
fd = socket(server_info->ai_family, SOCK_STREAM, 0);
if (fd < 0) {
tlog(TLOG_ERROR, "create socket failed.");
tlog(TLOG_ERROR, "create socket failed, %s", strerror(errno));
goto errout;
}
@@ -1732,7 +1736,7 @@ static int _DNS_client_create_socket_tcp(struct dns_server_info *server_info)
/* enable tcp fast open */
if (setsockopt(fd, IPPROTO_TCP, TCP_FASTOPEN_CONNECT, &yes, sizeof(yes)) != 0) {
tlog(TLOG_DEBUG, "enable TCP fast open failed.");
tlog(TLOG_DEBUG, "enable TCP fast open failed, %s", strerror(errno));
}
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &yes, sizeof(yes));