Add possibility to disable antireplay cache

antireplay/init.go

@@ -8,13 +8,24 @@ import (
 	"github.com/9seconds/mtg/config"
 )
 
+type CacheInterface interface {
+	AddObfuscated2([]byte)
+	AddTLS([]byte)
+	HasObfuscated2([]byte) bool
+	HasTLS([]byte) bool
+}
+
 var (
-	Cache    cache
+	Cache    CacheInterface
 	initOnce sync.Once
 )
 
 func Init() {
 	initOnce.Do(func() {
-		Cache.data = fastcache.New(config.C.AntiReplayMaxSize)
+		if config.C.AntiReplayMaxSize == 0 {
+			Cache = nilCache{}
+		} else {
+			Cache = cache{fastcache.New(config.C.AntiReplayMaxSize)}
+		}
 	})
 }