support multiple network interfaces

pkg/config/config.go

@@ -180,6 +180,7 @@ type ConnectorConfig struct {
 type ServiceConfig struct {
 	Name      string           `json:"name"`
 	Addr      string           `yaml:",omitempty" json:"addr,omitempty"`
+	Interface string           `yaml:",omitempty" json:"interface,omitempty"`
 	Admission string           `yaml:",omitempty" json:"admission,omitempty"`
 	Bypass    string           `yaml:",omitempty" json:"bypass,omitempty"`
 	Resolver  string           `yaml:",omitempty" json:"resolver,omitempty"`
@@ -196,17 +197,19 @@ type ChainConfig struct {
 }
 
 type HopConfig struct {
-	Name     string          `json:"name"`
-	Selector *SelectorConfig `yaml:",omitempty" json:"selector,omitempty"`
-	Bypass   string          `yaml:",omitempty" json:"bypass,omitempty"`
-	Resolver string          `yaml:",omitempty" json:"resolver,omitempty"`
-	Hosts    string          `yaml:",omitempty" json:"hosts,omitempty"`
-	Nodes    []*NodeConfig   `json:"nodes"`
+	Name      string          `json:"name"`
+	Interface string          `yaml:",omitempty" json:"interface,omitempty"`
+	Selector  *SelectorConfig `yaml:",omitempty" json:"selector,omitempty"`
+	Bypass    string          `yaml:",omitempty" json:"bypass,omitempty"`
+	Resolver  string          `yaml:",omitempty" json:"resolver,omitempty"`
+	Hosts     string          `yaml:",omitempty" json:"hosts,omitempty"`
+	Nodes     []*NodeConfig   `json:"nodes"`
 }
 
 type NodeConfig struct {
 	Name      string           `json:"name"`
 	Addr      string           `yaml:",omitempty" json:"addr,omitempty"`
+	Interface string           `yaml:",omitempty" json:"interface,omitempty"`
 	Bypass    string           `yaml:",omitempty" json:"bypass,omitempty"`
 	Resolver  string           `yaml:",omitempty" json:"resolver,omitempty"`
 	Hosts     string           `yaml:",omitempty" json:"hosts,omitempty"`

pkg/config/parsing/chain.go

@@ -93,11 +93,6 @@ func ParseChain(cfg *config.ChainConfig) (chain.Chainer, error) {
 				return nil, err
 			}
 
-			tr := (&chain.Transport{}).
-				WithConnector(cr).
-				WithDialer(d).
-				WithAddr(v.Addr)
-
 			if v.Bypass == "" {
 				v.Bypass = hop.Bypass
 			}
@@ -107,15 +102,24 @@ func ParseChain(cfg *config.ChainConfig) (chain.Chainer, error) {
 			if v.Hosts == "" {
 				v.Hosts = hop.Hosts
 			}
+			if v.Interface == "" {
+				v.Interface = hop.Interface
+			}
+
+			tr := (&chain.Transport{}).
+				WithConnector(cr).
+				WithDialer(d).
+				WithAddr(v.Addr).
+				WithInterface(v.Interface)
 
 			node := &chain.Node{
 				Name:      v.Name,
 				Addr:      v.Addr,
-				Transport: tr,
 				Bypass:    registry.BypassRegistry().Get(v.Bypass),
 				Resolver:  registry.ResolverRegistry().Get(v.Resolver),
 				Hosts:     registry.HostsRegistry().Get(v.Hosts),
 				Marker:    &chain.FailMarker{},
+				Transport: tr,
 			}
 			group.AddNode(node)
 		}

pkg/config/parsing/service.go

@@ -88,14 +88,21 @@ func ParseService(cfg *config.ServiceConfig) (service.Service, error) {
 	if cfg.Handler.Auther != "" {
 		auther = registry.AutherRegistry().Get(cfg.Handler.Auther)
 	}
+
+	router := (&chain.Router{}).
+		WithRetries(cfg.Handler.Retries).
+		// WithTimeout(timeout time.Duration).
+		WithInterface(cfg.Interface).
+		WithChain(registry.ChainRegistry().Get(cfg.Handler.Chain)).
+		WithResolver(registry.ResolverRegistry().Get(cfg.Resolver)).
+		WithHosts(registry.HostsRegistry().Get(cfg.Hosts)).
+		WithLogger(handlerLogger)
+
 	h := registry.HandlerRegistry().Get(cfg.Handler.Type)(
+		handler.RouterOption(router),
 		handler.AutherOption(auther),
 		handler.AuthOption(parseAuth(cfg.Handler.Auth)),
-		handler.RetriesOption(cfg.Handler.Retries),
-		handler.ChainOption(registry.ChainRegistry().Get(cfg.Handler.Chain)),
 		handler.BypassOption(registry.BypassRegistry().Get(cfg.Bypass)),
-		handler.ResolverOption(registry.ResolverRegistry().Get(cfg.Resolver)),
-		handler.HostsOption(registry.HostsRegistry().Get(cfg.Hosts)),
 		handler.TLSConfigOption(tlsConfig),
 		handler.LoggerOption(handlerLogger),
 	)