if no dns then no resolver nor dig nor nothin

server.go

@@ -32,7 +32,7 @@ func NewServer(c *Config) *Server {
 		},
 	}
 	if c.DNS == "" {
-		resolver = &net.Resolver{}
+		resolver = nil
 	}
 	transport := &http.Transport{}
 	transport.TLSClientConfig = &tls.Config{
@@ -133,6 +133,9 @@ func (s *Server) xfer(ctx context.Context, w io.Writer, r io.ReadCloser) {
 }
 
 func (s *Server) dig(ctx context.Context, host string) (string, error) {
+	if s.resolver == nil {
+		return host, nil
+	}
 	search := host
 	search = strings.TrimPrefix(search, "https://")
 	search = strings.TrimPrefix(search, "http://")