diff --git a/chain/route.go b/chain/route.go
index 73dbcd4..7052ec0 100644
--- a/chain/route.go
+++ b/chain/route.go
@@ -71,7 +71,9 @@ func (r *route) Dial(ctx context.Context, network, address string, opts ...DialO
 
 	cc, err := r.GetNode(r.Len()-1).transport.Connect(ctx, conn, network, address)
 	if err != nil {
-		conn.Close()
+		if conn != nil {
+			conn.Close()
+		}
 		return nil, err
 	}
 	return cc, nil
diff --git a/chain/transport.go b/chain/transport.go
index 15a4c3f..a469510 100644
--- a/chain/transport.go
+++ b/chain/transport.go
@@ -17,6 +17,7 @@ type Transport struct {
 	route     Route
 	dialer    dialer.Dialer
 	connector connector.Connector
+	timeout   time.Duration
 }
 
 func (tr *Transport) Copy() *Transport {
@@ -45,10 +46,15 @@ func (tr *Transport) WithConnector(connector connector.Connector) *Transport {
 	return tr
 }
 
+func (tr *Transport) WithTimeout(d time.Duration) *Transport {
+	tr.timeout = d
+	return tr
+}
+
 func (tr *Transport) Dial(ctx context.Context, addr string) (net.Conn, error) {
 	netd := &net_dialer.NetDialer{
 		Interface: tr.ifceName,
-		Timeout:   15 * time.Second,
+		Timeout:   tr.timeout,
 	}
 	if tr.sockOpts != nil {
 		netd.Mark = tr.sockOpts.Mark
@@ -81,7 +87,16 @@ func (tr *Transport) Handshake(ctx context.Context, conn net.Conn) (net.Conn, er
 }
 
 func (tr *Transport) Connect(ctx context.Context, conn net.Conn, network, address string) (net.Conn, error) {
-	return tr.connector.Connect(ctx, conn, network, address)
+	netd := &net_dialer.NetDialer{
+		Interface: tr.ifceName,
+		Timeout:   tr.timeout,
+	}
+	if tr.sockOpts != nil {
+		netd.Mark = tr.sockOpts.Mark
+	}
+	return tr.connector.Connect(ctx, conn, network, address,
+		connector.NetDialerConnectOption(netd),
+	)
 }
 
 func (tr *Transport) Bind(ctx context.Context, conn net.Conn, network, address string, opts ...connector.BindOption) (net.Listener, error) {
diff --git a/common/net/dialer/dialer.go b/common/net/dialer/dialer.go
index 738f902..cb7e7aa 100644
--- a/common/net/dialer/dialer.go
+++ b/common/net/dialer/dialer.go
@@ -46,7 +46,9 @@ func (d *NetDialer) Dial(ctx context.Context, network, addr string) (net.Conn, e
 	if d.DialFunc != nil {
 		return d.DialFunc(ctx, network, addr)
 	}
-	log.Debugf("interface: %s %v/%s", ifceName, ifAddr, network)
+	if ifceName != "" {
+		log.Debugf("interface: %s %v/%s", ifceName, ifAddr, network)
+	}
 
 	switch network {
 	case "udp", "udp4", "udp6":
diff --git a/connector/option.go b/connector/option.go
index 3a3ce06..ef1b8e3 100644
--- a/connector/option.go
+++ b/connector/option.go
@@ -5,6 +5,7 @@ import (
 	"net/url"
 	"time"
 
+	"github.com/go-gost/core/common/net/dialer"
 	"github.com/go-gost/core/logger"
 )
 
@@ -35,10 +36,17 @@ func LoggerOption(logger logger.Logger) Option {
 }
 
 type ConnectOptions struct {
+	NetDialer *dialer.NetDialer
 }
 
 type ConnectOption func(opts *ConnectOptions)
 
+func NetDialerConnectOption(netd *dialer.NetDialer) ConnectOption {
+	return func(opts *ConnectOptions) {
+		opts.NetDialer = netd
+	}
+}
+
 type BindOptions struct {
 	Mux               bool
 	Backlog           int