test

            size_t remaining = send_record.size() - send_off;

            buffer raw_buf((const char*)(send_record.data() + send_off), remaining);

            size_t sent;

            try {

                sent = _socket->sendRaw(raw_buf, 0);

            } catch (NetException& e) {

                if (e.getErrorType() == NetException::Note)

                    return;  // Socket busy (e.g. IOCP write pending), records stay queued

                throw;

            }

            size_t sent = _socket->sendRaw(raw_buf, 0);

            send_off += sent;

            if (send_off < send_record.size()) {