Method fail

boost-http/http-client.cpp:175–186

  }

  void fail(const char *what, beast::error_code ec) {
    LOG(ERROR) << "failed http client: " << what << ": " << ec.message();
    if (!sent_answer_) {
      sent_answer_ = true;
      payload_completed_ = true;
      callback_->receive_answer(502, "text/plain", {}, "", true);
    } else if (!payload_completed_) {
      payload_completed_ = true;
      callback_->receive_payload_part("", true);
    }
    do_close();
  }

 private:
  tcp::resolver resolver_;