add port range support for service

handler/relay/connect.go

@@ -66,7 +66,7 @@ func (h *relayHandler) handleConnect(ctx context.Context, conn net.Conn, network
 	case "serial":
 		cc, err = serial.OpenPort(serial.ParseConfigFromAddr(address))
 	default:
-		cc, err = h.router.Dial(ctx, network, address)
+		cc, err = h.options.Router.Dial(ctx, network, address)
 	}
 	if err != nil {
 		resp.Status = relay.StatusNetworkUnreachable

handler/relay/forward.go

@@ -38,7 +38,7 @@ func (h *relayHandler) handleForward(ctx context.Context, conn net.Conn, network
 
 	log.Debugf("%s >> %s", conn.RemoteAddr(), target.Addr)
 
-	cc, err := h.router.Dial(ctx, network, target.Addr)
+	cc, err := h.options.Router.Dial(ctx, network, target.Addr)
 	if err != nil {
 		// TODO: the router itself may be failed due to the failed node in the router,
 		// the dead marker may be a wrong operation.

handler/relay/handler.go

@@ -7,7 +7,6 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/go-gost/core/chain"
 	"github.com/go-gost/core/handler"
 	"github.com/go-gost/core/hop"
 	md "github.com/go-gost/core/metadata"
@@ -30,7 +29,6 @@ func init() {
 
 type relayHandler struct {
 	hop     hop.Hop
-	router  *chain.Router
 	md      metadata
 	options handler.Options
 	stats   *stats_util.HandlerStats
@@ -54,11 +52,6 @@ func (h *relayHandler) Init(md md.Metadata) (err error) {
 		return err
 	}
 
-	h.router = h.options.Router
-	if h.router == nil {
-		h.router = chain.NewRouter(chain.LoggerRouterOption(h.options.Logger))
-	}
-
 	ctx, cancel := context.WithCancel(context.Background())
 	h.cancel = cancel