Method GetFreePortsRange

library/cpp/testing/common/network.cpp:155–183

        }

        TVector<NTesting::TPortHolder> GetFreePortsRange(size_t count) const {
            Y_ABORT_UNLESS(count > 0);
            TVector<NTesting::TPortHolder> ports(Reserve(count));
            for (size_t i = 0; i < Retries; ++i) {
                for (auto[left, right] : Ranges_) {
                    if (right - left < count) {
                        continue;
                    }
                    ui16 start = left + RandomNumber<ui16>((right - left) / 2);
                    if (right - start < count) {
                        continue;
                    }
                    for (ui16 probe = start; probe < right; ++probe) {
                        auto port = TryAcquirePort(probe);
                        if (port) {
                            ports.emplace_back(std::move(port));
                        } else {
                            ports.clear();
                        }
                        if (ports.size() == count) {
                            return ports;
                        }
                    }
                    // Can't find required number of ports without gap in the current range
                    ports.clear();
                }
            }
            Y_ABORT("Cannot get range of %zu ports!", count);
        }

        NTesting::TPortHolder GetPort(ui16 port) const {
            if (port && DisableRandomPorts_) {