forward: retry if rcode is not good

IrineSistiana · Oct 2, 2023 · 3a1acf1 · 3a1acf1
1 parent 1e2818b
commit 3a1acf1
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/plugin/executable/forward/forward.go b/plugin/executable/forward/forward.go
@@ -288,6 +288,11 @@ func (f *Forward) exchange(ctx context.Context, qCtx *query_context.Context, us
 			if err != nil {
 				continue
 			}
+
+			// Retry until the last
+			if i < mcq-1 && r.Rcode != dns.RcodeSuccess && r.Rcode != dns.RcodeNameError {
+				continue
+			}
 			return r, nil
 		case <-ctx.Done():
 			return nil, ctx.Err()