From c1d027d6d1e6b9db7205ad74a4554c96822110bb Mon Sep 17 00:00:00 2001
From: Dreamacro <8615343+Dreamacro@users.noreply.github.com>
Date: Thu, 27 Jul 2023 21:23:08 +0800
Subject: [PATCH] Fix: mapping dns should not stale

---
 dns/enhancer.go   | 2 +-
 dns/middleware.go | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/dns/enhancer.go b/dns/enhancer.go
index 16ae0202bc..faaa072d0e 100644
--- a/dns/enhancer.go
+++ b/dns/enhancer.go
@@ -78,7 +78,7 @@ func NewEnhancer(cfg Config) *ResolverEnhancer {
 
 	if cfg.EnhancedMode != C.DNSNormal {
 		fakePool = cfg.Pool
-		mapping = cache.New(cache.WithSize(4096), cache.WithStale(true))
+		mapping = cache.New(cache.WithSize(4096))
 	}
 
 	return &ResolverEnhancer{
diff --git a/dns/middleware.go b/dns/middleware.go
index deb8015446..7ec2890607 100644
--- a/dns/middleware.go
+++ b/dns/middleware.go
@@ -100,6 +100,9 @@ func withMapping(mapping *cache.LruCache) middleware {
 					continue
 				}
 
+				if ttl < 1 {
+					ttl = 1
+				}
 				mapping.SetWithExpire(ip.String(), host, time.Now().Add(time.Second*time.Duration(ttl)))
 			}