Function WaitUntilConnectable

library/cpp/coroutine/engine/helper.cpp:23–36

    }

    bool WaitUntilConnectable(const TString& host, ui16 port, TDuration timeout) {
        const TInstant deadline = timeout.ToDeadLine();

        for (size_t i = 1; Now() < deadline; ++i) {
            const TDuration waitTime = TDuration::MilliSeconds(100) * i * i;
            SleepUntil(Min(Now() + waitTime, deadline));

            if (TryConnect(host, port, waitTime)) {
                return true;
            }
        }

        return false;
    }
}