package app

import (
	"sync"
	"time"
)

type dnsAttemptPolicy struct {
	TryLimit     int
	DomainBudget time.Duration
	StopOnNX     bool
}

type dnsCooldownState struct {
	Attempts    int
	TimeoutLike int
	FailStreak  int
	BanUntil    int64
	BanLevel    int
}

type dnsRunCooldown struct {
	mu               sync.Mutex
	enabled          bool
	minAttempts      int
	timeoutRatePct   int
	failStreak       int
	banSec           int
	maxBanSec        int
	temporaryAsError bool
	byUpstream       map[string]*dnsCooldownState
}