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

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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

30
app/dns/nameserver_quic.go
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@ -31,17 +31,18 @@ const handshakeTimeout = time.Second * 8
// QUICNameServer implemented DNS over QUIC
type QUICNameServer struct {
sync.RWMutex
ips map[string]*record
pub *pubsub.Service
cleanup *task.Periodic
reqID uint32
name string
destination *net.Destination
connection quic.Connection
ips map[string]*record
pub *pubsub.Service
cleanup *task.Periodic
reqID uint32
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
@ -55,10 +56,11 @@ func NewQUICNameServer(url *url.URL) (*QUICNameServer, error) {
dest := net.UDPDestination(net.ParseAddress(url.Hostname()), port)
s := &QUICNameServer{
ips: make(map[string]*record),
pub: pubsub.NewService(),
name: url.String(),
destination: &dest,
ips: make(map[string]*record),
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()