diff --git a/http.go b/http.go
index 4288b8a..0994700 100755
--- a/http.go
+++ b/http.go
@@ -69,7 +69,9 @@ func EncodeResponse(r *http.Response) ([]byte, error) {
 	raw := bytes.NewBuffer([]byte{})
 	binary.Write(raw, binary.LittleEndian, []byte("sign"))
 	respBytes, err := httputil.DumpResponse(r, true)
-	respBytes = replaceHost(respBytes)
+	if config.Replace == 1 {
+		respBytes = replaceHost(respBytes)
+	}
 	if err != nil {
 		return nil, err
 	}
diff --git a/json.go b/json.go
index 10269b2..1717e77 100755
--- a/json.go
+++ b/json.go
@@ -23,6 +23,7 @@ type Site struct {
 type Config struct {
 	Server   Server
 	SiteList []Site
+	Replace  int
 }
 type JsonStruct struct {
 }