Function GetPortRanges

library/cpp/testing/common/network.cpp:84–104

    }

    TVector<std::pair<ui16, ui16>> GetPortRanges() {
        TString givenRange = GetEnv("VALID_PORT_RANGE");
        TVector<std::pair<ui16, ui16>> ranges;
        if (givenRange.Contains(':')) {
            auto res = StringSplitter(givenRange).Split(':').Limit(2).ToList<TString>();
            ranges.emplace_back(FromString<ui16>(res.front()), FromString<ui16>(res.back()));
        } else {
            const ui16 firstValid = 1025;
            const ui16 lastValid = Max<ui16>();

            auto [firstEphemeral, lastEphemeral] = GetEphemeralRange();
            const ui16 firstInvalid = Max(firstEphemeral, firstValid);
            const ui16 lastInvalid = Min(lastEphemeral, lastValid);

            if (firstInvalid > firstValid)
                ranges.emplace_back(firstValid, firstInvalid - 1);
            if (lastInvalid < lastValid)
                ranges.emplace_back(lastInvalid + 1, lastValid);
        }
        return ranges;
    }

    class TPortManager {
        static constexpr size_t Retries = 20;