diff --git a/transport/http/codec.go b/transport/http/codec.go
index 4013bca..d3fbc1a 100644
--- a/transport/http/codec.go
+++ b/transport/http/codec.go
@@ -88,7 +88,7 @@ func DefaultErrorEncoder(w http.ResponseWriter, r *http.Request, err error) {
 func CodeForRequest(r *http.Request, name string) (encoding.Codec, bool) {
 	for _, accept := range r.Header[name] {
 		a := httputil.ContentSubtype(accept)
-		fmt.Println("aaa", a)
+		fmt.Println("aaa", name, a)
 		codec := encoding.GetCodec(a)
 		if codec != nil {
 			return codec, true