package dns import ( "context" "github.com/xtls/xray-core/features/dns" "strings" "github.com/xtls/xray-core/common/net" "github.com/xtls/xray-core/features/dns/localdns" ) // LocalNameServer is an wrapper over local DNS feature. type LocalNameServer struct { client *localdns.Client } const errEmptyResponse = "No address associated with hostname" // QueryIP implements Server. func (s *LocalNameServer) QueryIP(_ context.Context, domain string, _ net.IP, option dns.IPOption, _ bool) (ips []net.IP, err error) { ips, err = s.client.LookupIP(domain, option) if err != nil && strings.HasSuffix(err.Error(), errEmptyResponse) { err = dns.ErrEmptyResponse } if len(ips) > 0 { newError("Localhost got answer: ", domain, " -> ", ips).AtInfo().WriteToLog() } return } // Name implements Server. func (s *LocalNameServer) Name() string { return "localhost" } // NewLocalNameServer creates localdns server object for directly lookup in system DNS. func NewLocalNameServer() *LocalNameServer { newError("DNS: created localhost client").AtInfo().WriteToLog() return &LocalNameServer{ client: localdns.New(), } } // NewLocalDNSClient creates localdns client object for directly lookup in system DNS. func NewLocalDNSClient() *Client { return &Client{server: NewLocalNameServer()} }