update

myhttp/fasthttpc/httpclient.go

@@ -324,8 +324,12 @@ func (r *Request) doRequest(timeout time.Duration, method, rawUrl string) (*Resp
 	copy(body, tmpBody)
 
 	if r.httpClient.config.noCheckStatus == false {
-		if resp.StatusCode() != http.StatusOK {
+		if resp.StatusCode() >= 400 {
-			return nil, fmt.Errorf("status code err: %d (%s)", resp.StatusCode(), body)
+			return nil, &StatusErr{
+				StatusCode: resp.StatusCode(),
+				Body:       body,
+			}
+			//return nil, fmt.Errorf("status code err: %d (%s)", resp.StatusCode(), body)
 		}
 	}
 
@@ -364,3 +368,14 @@ type Response struct {
 func (r *Response) GetBody() []byte {
 	return r.body
 }
+
+var _ error = (*StatusErr)(nil)
+
+type StatusErr struct {
+	StatusCode int
+	Body       []byte
+}
+
+func (s *StatusErr) Error() string {
+	return fmt.Sprintf("status code err: %d (%s)", s.StatusCode, s.Body)
+}