proxy

type Manager struct {
	// testing
	ProxiesTest   chan string
	TimeoutTest   time.Duration
	URLTest       string
	IP            net.IP
	ProxiesTested map[string]int
	MtxTest       sync.Mutex
	FuncTest      func(*http.Client) bool

	// good to use
	MtxGood            sync.Mutex
	ProxiesGood        map[string][]time.Time
	ProxiesGoodStrikes map[string]int
	StrikeLimit        int
	Requests           int
	TimeWindow         time.Duration
	TimeoutGood        time.Duration
}