cache

package

v0.0.2 Latest Latest Go to latest Published: May 29, 2020 License: MIT Imports: 6 Imported by: 0

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var DefaultOptions = Options{
	BaseResolvers:  DefaultResolvers,
	CacheSize:      10,
	ExpirationTime: 5 * 60,
	MaxRetries:     5,
}

DefaultOptions of the cache

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var DefaultResolvers = []string{
	"1.1.1.1:53",
	"1.0.0.1:53",
	"8.8.8.8:53",
	"8.8.4.4:53",
}

DefaultResolvers trusted

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var Separator = "-"

func MarshalAddresses(ips []string) []byte

func UnmarshalAddresses(data []byte) []string

type Cache struct {
	// contains filtered or unexported fields
}

Cache is a strcture for caching DNS lookups

func New(options Options) (*Cache, error)

New creates a new caching dns resolver

func (c *Cache) Lookup(hostname string) ([]string, error)

Lookup a hostname

type DialerFunc func(context.Context, string, string) (net.Conn, error)

DialerFunc with signature matching of go net/dial

func NewDialer(options Options) (DialerFunc, error)

NewDialer gets a new Dialer instance using a resolver cache

type NoAddressFoundError struct{}

NoAddressFoundError occurs when no addresses are found for the host

func (m *NoAddressFoundError) Error() string

type Options struct {
	BaseResolvers  []string
	CacheSize      int
	ExpirationTime int
	MaxRetries     int
}

Options of the cache

type Resolver interface {
	Resolve(string) (dns.Result, error)
}

Resolver interface