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feat(dns): Support DNS queryStrategy config per NameServer.

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This commit is contained in:
cty123 2023-09-19 23:03:19 +02:00 committed by yuhan6665
parent cf575be678
commit 4f6042c69f
10 changed files with 379 additions and 168 deletions
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183
app/dns/config.pb.go
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@ -134,6 +134,7 @@ type NameServer struct {
PrioritizedDomain []*NameServer_PriorityDomain `protobuf:"bytes,2,rep,name=prioritized_domain,json=prioritizedDomain,proto3" json:"prioritized_domain,omitempty"`
Geoip []*router.GeoIP `protobuf:"bytes,3,rep,name=geoip,proto3" json:"geoip,omitempty"`
OriginalRules []*NameServer_OriginalRule `protobuf:"bytes,4,rep,name=original_rules,json=originalRules,proto3" json:"original_rules,omitempty"`
QueryStrategy QueryStrategy `protobuf:"varint,7,opt,name=query_strategy,json=queryStrategy,proto3,enum=xray.app.dns.QueryStrategy" json:"query_strategy,omitempty"`
}
func (x *NameServer) Reset() {
@ -210,6 +211,13 @@ func (x *NameServer) GetOriginalRules() []*NameServer_OriginalRule {
return nil
}
func (x *NameServer) GetQueryStrategy() QueryStrategy {
if x != nil {
return x.QueryStrategy
}
return QueryStrategy_USE_IP
}
type Config struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
@ -538,7 +546,7 @@ var file_app_dns_config_proto_rawDesc = []byte{
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@ -559,77 +567,81 @@ var file_app_dns_config_proto_rawDesc = []byte{
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}
var (
@ -664,19 +676,20 @@ var file_app_dns_config_proto_depIdxs = []int32{
4, // 1: xray.app.dns.NameServer.prioritized_domain:type_name -> xray.app.dns.NameServer.PriorityDomain
9, // 2: xray.app.dns.NameServer.geoip:type_name -> xray.app.router.GeoIP
5, // 3: xray.app.dns.NameServer.original_rules:type_name -> xray.app.dns.NameServer.OriginalRule
8, // 4: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
2, // 5: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
6, // 6: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
7, // 7: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
1, // 8: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
0, // 9: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
10, // 10: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
0, // 11: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
12, // [12:12] is the sub-list for method output_type
12, // [12:12] is the sub-list for method input_type
12, // [12:12] is the sub-list for extension type_name
12, // [12:12] is the sub-list for extension extendee
0, // [0:12] is the sub-list for field type_name
1, // 4: xray.app.dns.NameServer.query_strategy:type_name -> xray.app.dns.QueryStrategy
8, // 5: xray.app.dns.Config.NameServers:type_name -> xray.common.net.Endpoint
2, // 6: xray.app.dns.Config.name_server:type_name -> xray.app.dns.NameServer
6, // 7: xray.app.dns.Config.Hosts:type_name -> xray.app.dns.Config.HostsEntry
7, // 8: xray.app.dns.Config.static_hosts:type_name -> xray.app.dns.Config.HostMapping
1, // 9: xray.app.dns.Config.query_strategy:type_name -> xray.app.dns.QueryStrategy
0, // 10: xray.app.dns.NameServer.PriorityDomain.type:type_name -> xray.app.dns.DomainMatchingType
10, // 11: xray.app.dns.Config.HostsEntry.value:type_name -> xray.common.net.IPOrDomain
0, // 12: xray.app.dns.Config.HostMapping.type:type_name -> xray.app.dns.DomainMatchingType
13, // [13:13] is the sub-list for method output_type
13, // [13:13] is the sub-list for method input_type
13, // [13:13] is the sub-list for extension type_name
13, // [13:13] is the sub-list for extension extendee
0, // [0:13] is the sub-list for field type_name
}
func init() { file_app_dns_config_proto_init() }

1
app/dns/config.proto
View file

@ -28,6 +28,7 @@ message NameServer {
repeated PriorityDomain prioritized_domain = 2;
repeated xray.app.router.GeoIP geoip = 3;
repeated OriginalRule original_rules = 4;
QueryStrategy query_strategy = 7;
}
enum DomainMatchingType {

46
app/dns/nameserver.go
View file

@ -35,7 +35,7 @@ type Client struct {
var errExpectedIPNonMatch = errors.New("expectIPs not match")
// NewServer creates a name server object according to the network destination url.
func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, error) {
func NewServer(dest net.Destination, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (Server, error) {
if address := dest.Address; address.Family().IsDomain() {
u, err := url.Parse(address.Domain())
if err != nil {
@ -45,15 +45,15 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, err
case strings.EqualFold(u.String(), "localhost"):
return NewLocalNameServer(), nil
case strings.EqualFold(u.Scheme, "https"): // DOH Remote mode
return NewDoHNameServer(u, dispatcher)
return NewDoHNameServer(u, dispatcher, queryStrategy)
case strings.EqualFold(u.Scheme, "https+local"): // DOH Local mode
return NewDoHLocalNameServer(u), nil
return NewDoHLocalNameServer(u, queryStrategy), nil
case strings.EqualFold(u.Scheme, "quic+local"): // DNS-over-QUIC Local mode
return NewQUICNameServer(u)
return NewQUICNameServer(u, queryStrategy)
case strings.EqualFold(u.Scheme, "tcp"): // DNS-over-TCP Remote mode
return NewTCPNameServer(u, dispatcher)
return NewTCPNameServer(u, dispatcher, queryStrategy)
case strings.EqualFold(u.Scheme, "tcp+local"): // DNS-over-TCP Local mode
return NewTCPLocalNameServer(u)
return NewTCPLocalNameServer(u, queryStrategy)
case strings.EqualFold(u.String(), "fakedns"):
return NewFakeDNSServer(), nil
}
@ -68,12 +68,19 @@ func NewServer(dest net.Destination, dispatcher routing.Dispatcher) (Server, err
}
// NewClient creates a DNS client managing a name server with client IP, domain rules and expected IPs.
func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container router.GeoIPMatcherContainer, matcherInfos *[]*DomainMatcherInfo, updateDomainRule func(strmatcher.Matcher, int, []*DomainMatcherInfo) error) (*Client, error) {
func NewClient(
ctx context.Context,
ns *NameServer,
clientIP net.IP,
container router.GeoIPMatcherContainer,
matcherInfos *[]*DomainMatcherInfo,
updateDomainRule func(strmatcher.Matcher, int, []*DomainMatcherInfo) error,
) (*Client, error) {
client := &Client{}
err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
// Create a new server for each client for now
server, err := NewServer(ns.Address.AsDestination(), dispatcher)
server, err := NewServer(ns.Address.AsDestination(), dispatcher, ns.GetQueryStrategy())
if err != nil {
return newError("failed to create nameserver").Base(err).AtWarning()
}
@ -160,7 +167,7 @@ func NewClient(ctx context.Context, ns *NameServer, clientIP net.IP, container r
func NewSimpleClient(ctx context.Context, endpoint *net.Endpoint, clientIP net.IP) (*Client, error) {
client := &Client{}
err := core.RequireFeatures(ctx, func(dispatcher routing.Dispatcher) error {
server, err := NewServer(endpoint.AsDestination(), dispatcher)
server, err := NewServer(endpoint.AsDestination(), dispatcher, QueryStrategy_USE_IP)
if err != nil {
return newError("failed to create nameserver").Base(err).AtWarning()
}
@ -218,3 +225,24 @@ func (c *Client) MatchExpectedIPs(domain string, ips []net.IP) ([]net.IP, error)
newError("domain ", domain, " expectIPs ", newIps, " matched at server ", c.Name()).AtDebug().WriteToLog()
return newIps, nil
}
func ResolveIpOptionOverride(queryStrategy QueryStrategy, ipOption dns.IPOption) dns.IPOption {
switch queryStrategy {
case QueryStrategy_USE_IP:
return ipOption
case QueryStrategy_USE_IP4:
return dns.IPOption{
IPv4Enable: ipOption.IPv4Enable,
IPv6Enable: false,
FakeEnable: false,
}
case QueryStrategy_USE_IP6:
return dns.IPOption{
IPv4Enable: false,
IPv6Enable: ipOption.IPv6Enable,
FakeEnable: false,
}
default:
return ipOption
}
}

16
app/dns/nameserver_doh.go
View file

@ -38,12 +38,13 @@ type DoHNameServer struct {
httpClient *http.Client
dohURL string
name string
queryStrategy QueryStrategy
}
// NewDoHNameServer creates DOH server object for remote resolving.
func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher) (*DoHNameServer, error) {
func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher, queryStrategy QueryStrategy) (*DoHNameServer, error) {
newError("DNS: created Remote DOH client for ", url.String()).AtInfo().WriteToLog()
s := baseDOHNameServer(url, "DOH")
s := baseDOHNameServer(url, "DOH", queryStrategy)
s.dispatcher = dispatcher
tr := &http.Transport{
@ -90,9 +91,9 @@ func NewDoHNameServer(url *url.URL, dispatcher routing.Dispatcher) (*DoHNameServ
}
// NewDoHLocalNameServer creates DOH client object for local resolving
func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
func NewDoHLocalNameServer(url *url.URL, queryStrategy QueryStrategy) *DoHNameServer {
url.Scheme = "https"
s := baseDOHNameServer(url, "DOHL")
s := baseDOHNameServer(url, "DOHL", queryStrategy)
tr := &http.Transport{
IdleConnTimeout: 90 * time.Second,
ForceAttemptHTTP2: true,
@ -122,12 +123,13 @@ func NewDoHLocalNameServer(url *url.URL) *DoHNameServer {
return s
}
func baseDOHNameServer(url *url.URL, prefix string) *DoHNameServer {
func baseDOHNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) *DoHNameServer {
s := &DoHNameServer{
ips: make(map[string]*record),
pub: pubsub.NewService(),
name: prefix + "//" + url.Host,
dohURL: url.String(),
queryStrategy: queryStrategy,
}
s.cleanup = &task.Periodic{
Interval: time.Minute,
@ -353,6 +355,10 @@ func (s *DoHNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
// QueryIP implements Server.
func (s *DoHNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) { // nolint: dupl
fqdn := Fqdn(domain)
option = ResolveIpOptionOverride(s.queryStrategy, option)
if !option.IPv4Enable && !option.IPv6Enable {
return nil, dns_feature.ErrEmptyResponse
}
if disableCache {
newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()

50
app/dns/nameserver_doh_test.go
View file

@ -17,7 +17,7 @@ func TestDOHNameServer(t *testing.T) {
url, err := url.Parse("https+local://1.1.1.1/dns-query")
common.Must(err)
s := NewDoHLocalNameServer(url)
s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
IPv4Enable: true,
@ -34,7 +34,7 @@ func TestDOHNameServerWithCache(t *testing.T) {
url, err := url.Parse("https+local://1.1.1.1/dns-query")
common.Must(err)
s := NewDoHLocalNameServer(url)
s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
IPv4Enable: true,
@ -57,3 +57,49 @@ func TestDOHNameServerWithCache(t *testing.T) {
t.Fatal(r)
}
}
func TestDOHNameServerWithIPv4Override(t *testing.T) {
url, err := url.Parse("https+local://1.1.1.1/dns-query")
common.Must(err)
s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP4)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
IPv4Enable: true,
IPv6Enable: true,
}, false)
cancel()
common.Must(err)
if len(ips) == 0 {
t.Error("expect some ips, but got 0")
}
for _, ip := range ips {
if len(ip) != net.IPv4len {
t.Error("expect only IPv4 response from DNS query")
}
}
}
func TestDOHNameServerWithIPv6Override(t *testing.T) {
url, err := url.Parse("https+local://1.1.1.1/dns-query")
common.Must(err)
s := NewDoHLocalNameServer(url, QueryStrategy_USE_IP6)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
IPv4Enable: true,
IPv6Enable: true,
}, false)
cancel()
common.Must(err)
if len(ips) == 0 {
t.Error("expect some ips, but got 0")
}
for _, ip := range ips {
if len(ip) != net.IPv6len {
t.Error("expect only IPv6 response from DNS query")
}
}
}

8
app/dns/nameserver_quic.go
View file

@ -38,10 +38,11 @@ type QUICNameServer struct {
name string
destination *net.Destination
connection quic.Connection
queryStrategy QueryStrategy
}
// NewQUICNameServer creates DNS-over-QUIC client object for local resolving
func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
func NewQUICNameServer(url *url.URL, queryStrategy QueryStrategy) (*QUICNameServer, error) {
newError("DNS: created Local DNS-over-QUIC client for ", url.String()).AtInfo().WriteToLog()
var err error
@ -59,6 +60,7 @@ func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
pub: pubsub.NewService(),
name: url.String(),
destination: &dest,
queryStrategy: queryStrategy,
}
s.cleanup = &task.Periodic{
Interval: time.Minute,
@ -269,6 +271,10 @@ func (s *QUICNameServer) findIPsForDomain(domain string, option dns_feature.IPOp
// QueryIP is called from dns.Server->queryIPTimeout
func (s *QUICNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
fqdn := Fqdn(domain)
option = ResolveIpOptionOverride(s.queryStrategy, option)
if !option.IPv4Enable && !option.IPv6Enable {
return nil, dns_feature.ErrEmptyResponse
}
if disableCache {
newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()

48
app/dns/nameserver_quic_test.go
View file

@ -16,7 +16,7 @@ import (
func TestQUICNameServer(t *testing.T) {
url, err := url.Parse("quic://dns.adguard.com")
common.Must(err)
s, err := NewQUICNameServer(url)
s, err := NewQUICNameServer(url, QueryStrategy_USE_IP)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
@ -40,3 +40,49 @@ func TestQUICNameServer(t *testing.T) {
t.Fatal(r)
}
}
func TestQUICNameServerWithIPv4Override(t *testing.T) {
url, err := url.Parse("quic://dns.adguard.com")
common.Must(err)
s, err := NewQUICNameServer(url, QueryStrategy_USE_IP4)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
}, false)
cancel()
common.Must(err)
if len(ips) == 0 {
t.Error("expect some ips, but got 0")
}
for _, ip := range ips {
if len(ip) != net.IPv4len {
t.Error("expect only IPv4 response from DNS query")
}
}
}
func TestQUICNameServerWithIPv6Override(t *testing.T) {
url, err := url.Parse("quic://dns.adguard.com")
common.Must(err)
s, err := NewQUICNameServer(url, QueryStrategy_USE_IP6)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns.IPOption{
IPv4Enable: true,
IPv6Enable: true,
}, false)
cancel()
common.Must(err)
if len(ips) == 0 {
t.Error("expect some ips, but got 0")
}
for _, ip := range ips {
if len(ip) != net.IPv6len {
t.Error("expect only IPv6 response from DNS query")
}
}
}

25
app/dns/nameserver_tcp.go
View file

@ -34,11 +34,16 @@ type TCPNameServer struct {
cleanup *task.Periodic
reqID uint32
dial func(context.Context) (net.Conn, error)
queryStrategy QueryStrategy
}
// NewTCPNameServer creates DNS over TCP server object for remote resolving.
func NewTCPNameServer(url *url.URL, dispatcher routing.Dispatcher) (*TCPNameServer, error) {
s, err := baseTCPNameServer(url, "TCP")
func NewTCPNameServer(
url *url.URL,
dispatcher routing.Dispatcher,
queryStrategy QueryStrategy,
) (*TCPNameServer, error) {
s, err := baseTCPNameServer(url, "TCP", queryStrategy)
if err != nil {
return nil, err
}
@ -59,8 +64,8 @@ func NewTCPNameServer(url *url.URL, dispatcher routing.Dispatcher) (*TCPNameServ
}
// NewTCPLocalNameServer creates DNS over TCP client object for local resolving
func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
s, err := baseTCPNameServer(url, "TCPL")
func NewTCPLocalNameServer(url *url.URL, queryStrategy QueryStrategy) (*TCPNameServer, error) {
s, err := baseTCPNameServer(url, "TCPL", queryStrategy)
if err != nil {
return nil, err
}
@ -72,12 +77,11 @@ func NewTCPLocalNameServer(url *url.URL) (*TCPNameServer, error) {
return s, nil
}
func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
var err error
func baseTCPNameServer(url *url.URL, prefix string, queryStrategy QueryStrategy) (*TCPNameServer, error) {
port := net.Port(53)
if url.Port() != "" {
port, err = net.PortFromString(url.Port())
if err != nil {
var err error
if port, err = net.PortFromString(url.Port()); err != nil {
return nil, err
}
}
@ -88,6 +92,7 @@ func baseTCPNameServer(url *url.URL, prefix string) (*TCPNameServer, error) {
ips: make(map[string]*record),
pub: pubsub.NewService(),
name: prefix + "//" + dest.NetAddr(),
queryStrategy: queryStrategy,
}
s.cleanup = &task.Periodic{
Interval: time.Minute,
@ -308,6 +313,10 @@ func (s *TCPNameServer) findIPsForDomain(domain string, option dns_feature.IPOpt
// QueryIP implements Server.
func (s *TCPNameServer) QueryIP(ctx context.Context, domain string, clientIP net.IP, option dns_feature.IPOption, disableCache bool) ([]net.IP, error) {
fqdn := Fqdn(domain)
option = ResolveIpOptionOverride(s.queryStrategy, option)
if !option.IPv4Enable && !option.IPv6Enable {
return nil, dns_feature.ErrEmptyResponse
}
if disableCache {
newError("DNS cache is disabled. Querying IP for ", domain, " at ", s.name).AtDebug().WriteToLog()

52
app/dns/nameserver_tcp_test.go
View file

@ -16,7 +16,7 @@ import (
func TestTCPLocalNameServer(t *testing.T) {
url, err := url.Parse("tcp+local://8.8.8.8")
common.Must(err)
s, err := NewTCPLocalNameServer(url)
s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
@ -33,7 +33,7 @@ func TestTCPLocalNameServer(t *testing.T) {
func TestTCPLocalNameServerWithCache(t *testing.T) {
url, err := url.Parse("tcp+local://8.8.8.8")
common.Must(err)
s, err := NewTCPLocalNameServer(url)
s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
@ -57,3 +57,51 @@ func TestTCPLocalNameServerWithCache(t *testing.T) {
t.Fatal(r)
}
}
func TestTCPLocalNameServerWithIPv4Override(t *testing.T) {
url, err := url.Parse("tcp+local://8.8.8.8")
common.Must(err)
s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP4)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
IPv4Enable: true,
IPv6Enable: true,
}, false)
cancel()
common.Must(err)
if len(ips) == 0 {
t.Error("expect some ips, but got 0")
}
for _, ip := range ips {
if len(ip) != net.IPv4len {
t.Error("expect only IPv4 response from DNS query")
}
}
}
func TestTCPLocalNameServerWithIPv6Override(t *testing.T) {
url, err := url.Parse("tcp+local://8.8.8.8")
common.Must(err)
s, err := NewTCPLocalNameServer(url, QueryStrategy_USE_IP6)
common.Must(err)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
ips, err := s.QueryIP(ctx, "google.com", net.IP(nil), dns_feature.IPOption{
IPv4Enable: true,
IPv6Enable: true,
}, false)
cancel()
common.Must(err)
if len(ips) == 0 {
t.Error("expect some ips, but got 0")
}
for _, ip := range ips {
if len(ip) != net.IPv6len {
t.Error("expect only IPv6 response from DNS query")
}
}
}

28
infra/conf/dns.go
View file

@ -17,6 +17,7 @@ type NameServerConfig struct {
SkipFallback bool
Domains []string
ExpectIPs StringList
QueryStrategy string
}
func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
@ -33,6 +34,7 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
SkipFallback bool `json:"skipFallback"`
Domains []string `json:"domains"`
ExpectIPs StringList `json:"expectIps"`
QueryStrategy string `json:"queryStrategy"`
}
if err := json.Unmarshal(data, &advanced); err == nil {
c.Address = advanced.Address
@ -41,6 +43,7 @@ func (c *NameServerConfig) UnmarshalJSON(data []byte) error {
c.SkipFallback = advanced.SkipFallback
c.Domains = advanced.Domains
c.ExpectIPs = advanced.ExpectIPs
c.QueryStrategy = advanced.QueryStrategy
return nil
}
@ -112,6 +115,7 @@ func (c *NameServerConfig) Build() (*dns.NameServer, error) {
PrioritizedDomain: domains,
Geoip: geoipList,
OriginalRules: originalRules,
QueryStrategy: resolveQueryStrategy(c.QueryStrategy),
}, nil
}
@ -311,6 +315,7 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
DisableCache: c.DisableCache,
DisableFallback: c.DisableFallback,
DisableFallbackIfMatch: c.DisableFallbackIfMatch,
QueryStrategy: resolveQueryStrategy(c.QueryStrategy),
}
if c.ClientIP != nil {
@ -320,16 +325,6 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
config.ClientIp = []byte(c.ClientIP.IP())
}
config.QueryStrategy = dns.QueryStrategy_USE_IP
switch strings.ToLower(c.QueryStrategy) {
case "useip", "use_ip", "use-ip":
config.QueryStrategy = dns.QueryStrategy_USE_IP
case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
config.QueryStrategy = dns.QueryStrategy_USE_IP4
case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
config.QueryStrategy = dns.QueryStrategy_USE_IP6
}
for _, server := range c.Servers {
ns, err := server.Build()
if err != nil {
@ -348,3 +343,16 @@ func (c *DNSConfig) Build() (*dns.Config, error) {
return config, nil
}
func resolveQueryStrategy(queryStrategy string) dns.QueryStrategy {
switch strings.ToLower(queryStrategy) {
case "useip", "use_ip", "use-ip":
return dns.QueryStrategy_USE_IP
case "useip4", "useipv4", "use_ip4", "use_ipv4", "use_ip_v4", "use-ip4", "use-ipv4", "use-ip-v4":
return dns.QueryStrategy_USE_IP4
case "useip6", "useipv6", "use_ip6", "use_ipv6", "use_ip_v6", "use-ip6", "use-ipv6", "use-ip-v6":
return dns.QueryStrategy_USE_IP6
default:
return dns.QueryStrategy_USE_IP
}
}