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feat: dns over tls listener support #219

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Sep 29, 2024
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8 changes: 8 additions & 0 deletions internal/config/config.go
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ type Config struct {
Debug DebugConfig `yaml:"debug"`
Indexer IndexerConfig `yaml:"indexer"`
State StateConfig `yaml:"state"`
Tls TlsConfig `yaml:"tls"`
Profiles []string `yaml:"profiles" envconfig:"PROFILES"`
}

Expand All @@ -33,6 +34,7 @@ type LoggingConfig struct {
type DnsConfig struct {
ListenAddress string `yaml:"address" envconfig:"DNS_LISTEN_ADDRESS"`
ListenPort uint `yaml:"port" envconfig:"DNS_LISTEN_PORT"`
ListenTlsPort uint `yaml:"tlsPort" envconfig:"DNS_LISTEN_TLS_PORT"`
RecursionEnabled bool `yaml:"recursionEnabled" envconfig:"DNS_RECURSION"`
FallbackServers []string `yaml:"fallbackServers" envconfig:"DNS_FALLBACK_SERVERS"`
}
Expand Down Expand Up @@ -61,6 +63,11 @@ type StateConfig struct {
Directory string `yaml:"dir" envconfig:"STATE_DIR"`
}

type TlsConfig struct {
CertFilePath string `yaml:"certFilePath" envconfig:"TLS_CERT_FILE_PATH"`
KeyFilePath string `yaml:"keyFilePath" envconfig:"TLS_KEY_FILE_PATH"`
}

// Singleton config instance with default values
var globalConfig = &Config{
Logging: LoggingConfig{
Expand All @@ -69,6 +76,7 @@ var globalConfig = &Config{
Dns: DnsConfig{
ListenAddress: "",
ListenPort: 8053,
ListenTlsPort: 8853,
// hdns.io
FallbackServers: []string{
"103.196.38.38",
Expand Down
11 changes: 11 additions & 0 deletions internal/dns/dns.go
Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,17 @@ func Start() error {
ReusePort: true,
}
go startListener(serverTcp)
// TLS listener
if cfg.Tls.CertFilePath != "" && cfg.Tls.KeyFilePath != "" {
listenTlsAddr := fmt.Sprintf("%s:%d", cfg.Dns.ListenAddress, cfg.Dns.ListenTlsPort)
serverTls := &dns.Server{
Addr: listenTlsAddr,
Net: "tcp-tls",
TsigSecret: nil,
ReusePort: false,
}
go startListener(serverTls)
}
return nil
}

Expand Down