add router handler option

pkg/handler/socks/v4/handler.go

@@ -34,9 +34,7 @@ func NewHandler(opts ...handler.Option) handler.Handler {
 
 	return &socks4Handler{
 		bypass: options.Bypass,
-		router: (&chain.Router{}).
-			WithLogger(options.Logger).
-			WithResolver(options.Resolver),
+		router: options.Router,
 		logger: options.Logger,
 	}
 }
@@ -46,16 +44,9 @@ func (h *socks4Handler) Init(md md.Metadata) (err error) {
 		return err
 	}
 
-	h.router.WithRetry(h.md.retryCount)
-
 	return nil
 }
 
-// implements chain.Chainable interface
-func (h *socks4Handler) WithChain(chain *chain.Chain) {
-	h.router.WithChain(chain)
-}
-
 func (h *socks4Handler) Handle(ctx context.Context, conn net.Conn) {
 	defer conn.Close()
 

pkg/handler/socks/v4/metadata.go

@@ -10,14 +10,12 @@ import (
 type metadata struct {
 	authenticator auth.Authenticator
 	readTimeout   time.Duration
-	retryCount    int
 }
 
 func (h *socks4Handler) parseMetadata(md mdata.Metadata) (err error) {
 	const (
 		users       = "users"
 		readTimeout = "readTimeout"
-		retryCount  = "retry"
 	)
 
 	if auths := mdata.GetStrings(md, users); len(auths) > 0 {
@@ -31,6 +29,5 @@ func (h *socks4Handler) parseMetadata(md mdata.Metadata) (err error) {
 	}
 
 	h.md.readTimeout = mdata.GetDuration(md, readTimeout)
-	h.md.retryCount = mdata.GetInt(md, retryCount)
 	return
 }