diff --git a/internal/httputil/http.go b/internal/httputil/http.go
index e84453c..0101fd1 100644
--- a/internal/httputil/http.go
+++ b/internal/httputil/http.go
@@ -1,6 +1,8 @@
 package httputil
 
-import "strings"
+import (
+	"strings"
+)
 
 const (
 	baseContentType = "application"
@@ -19,6 +21,10 @@ func ContentSubtype(contentType string) string {
 	if right == -1 {
 		right = len(contentType)
 	}
+	right1 := strings.Index(contentType, ",")
+	if right1 > 0 && right1 < right {
+		right = right1
+	}
 	if right < left {
 		return ""
 	}
diff --git a/internal/httputil/http_test.go b/internal/httputil/http_test.go
new file mode 100644
index 0000000..aa13117
--- /dev/null
+++ b/internal/httputil/http_test.go
@@ -0,0 +1,10 @@
+package httputil
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestContentSubtype(t *testing.T) {
+	fmt.Println(ContentSubtype("application/json, text/plain, */*"))
+}
diff --git a/transport/http/codec.go b/transport/http/codec.go
index 156448a..fd353d4 100644
--- a/transport/http/codec.go
+++ b/transport/http/codec.go
@@ -37,7 +37,6 @@ func DefaultRequestQuery(r *http.Request, v any) error {
 	return binding.BindQuery(r.URL.Query(), v)
 }
 func DefaultRequestDecoder(r *http.Request, v any) error {
-	fmt.Println("request decoder")
 	codec, ok := CodeForRequest(r, "Content-type")
 	if !ok {
 		return errors.BadRequest("CODEC", fmt.Sprintf("unregister Content-Type: %s", codec))
@@ -89,7 +88,6 @@ 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", name, a)
 		codec := encoding.GetCodec(a)
 		if codec != nil {
 			return codec, true