diff --git a/gateway/codec/codce.go b/gateway/codec/codce.go
index f4c535d..f8ce557 100644
--- a/gateway/codec/codce.go
+++ b/gateway/codec/codce.go
@@ -20,7 +20,7 @@ func (protoCodec) Unmarshal(data []byte, v interface{}) error {
 	return proto.Unmarshal(data, v.(proto.Message))
 }
 
-type frame struct {
+type Frame struct {
 	payload []byte
 }
 
@@ -33,7 +33,7 @@ func (p *proxyCodec) Name() string {
 }
 
 func (p *proxyCodec) Marshal(v interface{}) ([]byte, error) {
-	out, ok := v.(*frame)
+	out, ok := v.(*Frame)
 	if !ok {
 		return p.Marshal(v)
 	}
@@ -41,7 +41,7 @@ func (p *proxyCodec) Marshal(v interface{}) ([]byte, error) {
 }
 
 func (p *proxyCodec) Unmarshal(data []byte, v interface{}) error {
-	dst, ok := v.(*frame)
+	dst, ok := v.(*Frame)
 	if !ok {
 		return p.Unmarshal(data, v)
 	}