fix transparent proxy

config/config.go

@@ -176,10 +176,15 @@ type ConnectorConfig struct {
 	Metadata map[string]any `yaml:",omitempty" json:"metadata,omitempty"`
 }
 
+type SockOptsConfig struct {
+	Mark int `yaml:",omitempty" json:"mark,omitempty"`
+}
+
 type ServiceConfig struct {
 	Name      string           `json:"name"`
 	Addr      string           `yaml:",omitempty" json:"addr,omitempty"`
 	Interface string           `yaml:",omitempty" json:"interface,omitempty"`
+	SockOpts  *SockOptsConfig  `yaml:"sockopts,omitempty" json:"sockopts,omitempty"`
 	Admission string           `yaml:",omitempty" json:"admission,omitempty"`
 	Bypass    string           `yaml:",omitempty" json:"bypass,omitempty"`
 	Resolver  string           `yaml:",omitempty" json:"resolver,omitempty"`
@@ -198,6 +203,7 @@ type ChainConfig struct {
 type HopConfig struct {
 	Name      string          `json:"name"`
 	Interface string          `yaml:",omitempty" json:"interface,omitempty"`
+	SockOpts  *SockOptsConfig `yaml:"sockopts,omitempty" json:"sockopts,omitempty"`
 	Selector  *SelectorConfig `yaml:",omitempty" json:"selector,omitempty"`
 	Bypass    string          `yaml:",omitempty" json:"bypass,omitempty"`
 	Resolver  string          `yaml:",omitempty" json:"resolver,omitempty"`
@@ -209,6 +215,7 @@ type NodeConfig struct {
 	Name      string           `json:"name"`
 	Addr      string           `yaml:",omitempty" json:"addr,omitempty"`
 	Interface string           `yaml:",omitempty" json:"interface,omitempty"`
+	SockOpts  *SockOptsConfig  `yaml:"sockopts,omitempty" json:"sockopts,omitempty"`
 	Bypass    string           `yaml:",omitempty" json:"bypass,omitempty"`
 	Resolver  string           `yaml:",omitempty" json:"resolver,omitempty"`
 	Hosts     string           `yaml:",omitempty" json:"hosts,omitempty"`

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)).