move hop out of chain

handler/handler.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"net"
 
-	"github.com/go-gost/core/chain"
+	"github.com/go-gost/core/hop"
 	"github.com/go-gost/core/metadata"
 )
 
@@ -14,5 +14,5 @@ type Handler interface {
 }
 
 type Forwarder interface {
-	Forward(chain.Hop)
+	Forward(hop.Hop)
 }

hop/hop.go

@@ -1,6 +1,10 @@
-package chain
+package hop
 
-import "context"
+import (
+	"context"
+
+	"github.com/go-gost/core/chain"
+)
 
 type SelectOptions struct {
 	Addr     string
@@ -29,6 +33,9 @@ func ProtocolSelectOption(protocol string) SelectOption {
 }
 
 type Hop interface {
-	Nodes() []*Node
+	Select(ctx context.Context, opts ...SelectOption) *chain.Node
-	Select(ctx context.Context, opts ...SelectOption) *Node
+}
+
+type NodeList interface {
+	Nodes() []*chain.Node
 }