proxy

type Information struct {
	Transparent bool
	Works       int
	Fails       int
}

type Manager struct {
	Proxies      []*url.URL
	LastFetch    time.Time
	ProxyRefresh time.Duration

	Fetchers       []func() ([]*url.URL, error)
	Timeout        time.Duration
	MaxConcurrency int
	Filter         float64
	URLTest        string

	GoodProxies  map[string]*http.Client
	ProxiesScore map[string]*Information
	Mtx          sync.Mutex
}