diff --git a/proxy/proxy.go b/proxy/proxy.go
index eef7a7a..15c45f0 100644
--- a/proxy/proxy.go
+++ b/proxy/proxy.go
@@ -25,17 +25,13 @@ func GetTransport(proxy string) (http.RoundTripper, error) {
 	return proxyTcp(proxyUrl)
 }
 
-type forwardDialer struct {
-	dialContext func(ctx context.Context, network, address string) (net.Conn, error)
-}
+type forwardDialer func(ctx context.Context, network, address string) (net.Conn, error)
 
-func (d *forwardDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
-	return d.dialContext(ctx, network, address)
+func (d forwardDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
+	return d(ctx, network, address)
 }
-func (d *forwardDialer) Dial(network, address string) (net.Conn, error) {
+func (d forwardDialer) Dial(network, address string) (net.Conn, error) {
 	panic("Dial should not be called")
-	//default Dial is nil
-	//return defaultTransport().Dial(network, address)
 }
 
 func unixSocks5Proxy(proxyUrl *url.URL) (http.RoundTripper, error) {
@@ -53,7 +49,7 @@ func unixSocks5Proxy(proxyUrl *url.URL) (http.RoundTripper, error) {
 			Password: password,
 		}
 	}
-	dialer, err := proxy.SOCKS5("unix", proxyUrl.Path, auth, &forwardDialer{trans.DialContext})
+	dialer, err := proxy.SOCKS5("unix", proxyUrl.Path, auth, forwardDialer(trans.DialContext))
 	if err != nil {
 		return nil, fmt.Errorf("failed to make socks proxy, url: %s, err: %w", proxyUrl, err)
 	}