+ DNS: new blocking mode: "refused"

dnsforward/dnsforward_http.go

@@ -74,7 +74,7 @@ func (s *Server) handleGetConfig(w http.ResponseWriter, r *http.Request) {
 
 func checkBlockingMode(req dnsConfigJSON) bool {
 	bm := req.BlockingMode
-	if !(bm == "default" || bm == "nxdomain" || bm == "null_ip" || bm == "custom_ip") {
+	if !(bm == "default" || bm == "refused" || bm == "nxdomain" || bm == "null_ip" || bm == "custom_ip") {
 		return false
 	}
 

dnsforward/msg.go

@@ -64,6 +64,11 @@ func (s *Server) genDNSFilterMessage(d *proxy.DNSContext, result *dnsfilter.Resu
 			// means that we should return NXDOMAIN for any blocked request
 
 			return s.genNXDomain(m)
+
+		} else if s.conf.BlockingMode == "refused" {
+			// means that we should return NXDOMAIN for any blocked request
+
+			return s.makeResponseREFUSED(m)
 		}
 
 		// Default blocking mode