add router handler option

pkg/handler/tun/handler.go

@@ -46,9 +46,7 @@ func NewHandler(opts ...handler.Option) handler.Handler {
 
 	return &tunHandler{
 		bypass: options.Bypass,
-		router: (&chain.Router{}).
-			WithLogger(options.Logger).
-			WithResolver(options.Resolver),
+		router: options.Router,
 		logger: options.Logger,
 		exit:   make(chan struct{}, 1),
 	}
@@ -59,16 +57,9 @@ func (h *tunHandler) Init(md md.Metadata) (err error) {
 		return err
 	}
 
-	h.router.WithRetry(h.md.retryCount)
-
 	return nil
 }
 
-// implements chain.Chainable interface
-func (h *tunHandler) WithChain(chain *chain.Chain) {
-	h.router.WithChain(chain)
-}
-
 // Forward implements handler.Forwarder.
 func (h *tunHandler) Forward(group *chain.NodeGroup) {
 	h.group = group

pkg/handler/tun/metadata.go

@@ -10,7 +10,6 @@ import (
 
 type metadata struct {
 	cipher     core.Cipher
-	retryCount int
 	bufferSize int
 }
 
@@ -19,7 +18,6 @@ func (h *tunHandler) parseMetadata(md mdata.Metadata) (err error) {
 		users       = "users"
 		key         = "key"
 		readTimeout = "readTimeout"
-		retryCount  = "retry"
 		bufferSize  = "bufferSize"
 	)
 
@@ -37,7 +35,6 @@ func (h *tunHandler) parseMetadata(md mdata.Metadata) (err error) {
 	if err != nil {
 		return
 	}
-	h.md.retryCount = mdata.GetInt(md, retryCount)
 
 	h.md.bufferSize = mdata.GetInt(md, bufferSize)
 	if h.md.bufferSize <= 0 {