fix transparent proxy

config/parsing/chain.go

@@ -105,12 +105,23 @@ func ParseChain(cfg *config.ChainConfig) (chain.Chainer, error) {
 			if v.Interface == "" {
 				v.Interface = hop.Interface
 			}
+			if v.SockOpts == nil {
+				v.SockOpts = hop.SockOpts
+			}
+
+			var sockOpts *chain.SockOpts
+			if v.SockOpts != nil {
+				sockOpts = &chain.SockOpts{
+					Mark: v.SockOpts.Mark,
+				}
+			}
 
 			tr := (&chain.Transport{}).
 				WithConnector(cr).
 				WithDialer(d).
 				WithAddr(v.Addr).
-				WithInterface(v.Interface)
+				WithInterface(v.Interface).
+				WithSockOpts(sockOpts)
 
 			node := &chain.Node{
 				Name:      v.Name,

config/parsing/service.go

@@ -91,10 +91,18 @@ func ParseService(cfg *config.ServiceConfig) (service.Service, error) {
 		auther = registry.AutherRegistry().Get(cfg.Handler.Auther)
 	}
 
+	var sockOpts *chain.SockOpts
+	if cfg.SockOpts != nil {
+		sockOpts = &chain.SockOpts{
+			Mark: cfg.SockOpts.Mark,
+		}
+	}
+
 	router := (&chain.Router{}).
 		WithRetries(cfg.Handler.Retries).
 		// WithTimeout(timeout time.Duration).
 		WithInterface(cfg.Interface).
+		WithSockOpts(sockOpts).
 		WithChain(registry.ChainRegistry().Get(cfg.Handler.Chain)).
 		WithResolver(registry.ResolverRegistry().Get(cfg.Resolver)).
 		WithHosts(registry.HostsRegistry().Get(cfg.Hosts)).