in http/common/logging/logging.go [203:215]
func (w *ResponseWriter) Write(b []byte) (int, error) {
if w.StatusCode == 0 {
w.StatusCode = http.StatusOK
}
if w.StatusCode >= http.StatusBadRequest {
if w.Buf == nil {
w.Buf = new(bytes.Buffer)
}
// Write only if status code indicates error
w.Buf.Write(b)
}
return w.ResponseWriter.Write(b)
}