odyn

var (
	// IpifyProvider uses ipify.org to discover the public IP address.
	IpifyProvider, _ = NewHTTPProvider("https://api.ipify.org")

	// IPInfoProvider uses ipinfo.io to discover the public IP address.
	IPInfoProvider, _ = NewHTTPProviderWithOptions(&HTTPProviderOptions{
		URL:   "https://ipinfo.io",
		Parse: ipInfoParser,
		Headers: map[string]string{
			"Accept": "application/json",
		},
	})

	// OpenDNSProvider uses OpenDNS's nameservers to discover the public IP
	// address.
	OpenDNSProvider, _ = NewDNSProvider("myip.opendns.com.", []string{
		"208.67.222.222:53",
		"208.67.220.220:53",
		"208.67.222.220:53",
		"208.67.220.222:53",
	})
)

var (
	// ErrDNSProviderNoResults is returned when no results could be obtained
	// from the DNS nameservers.
	ErrDNSProviderNoResults = errors.New("dns provider returned no results")

	// ErrDNSProviderMultipleResults is returned when multiple different IP
	// addresses where obtained from the set of nameservers. In this case, the
	// provider will, however, return the first IP address instead of nil.
	ErrDNSProviderMultipleResults = errors.New("dns provider returned multiple different results")
)

var (
	// ErrHTTPProviderInvalidResponseCode is returned when the HTTP service
	// responds with a non 200 HTTP code.
	ErrHTTPProviderInvalidResponseCode = errors.New("provider responded with a non-200 status code")

	// ErrHTTPProviderCouldNotParseIP is returned when the provider is unable
	// to parse the IP address from the response body.
	ErrHTTPProviderCouldNotParseIP = errors.New("provider could not parse IP address from the response")

	// ErrHTTPProviderURLIsRequired is returned when trying to create an
	// HTTPProvider with a nil URL address.
	ErrHTTPProviderURLIsRequired = errors.New("the URL option is required")
)

var (
	// ErrProviderSetInvalidKind is returned when trying to create a new
	// ProviderSetor or querying using one with invalid kind set.
	ErrProviderSetInvalidKind = errors.New("invalid ProviderSet kind")

	// ErrProviderSetAllProvidersFailed is returned when all the providers in
	// the ProviderSet returned an error.
	ErrProviderSetAllProvidersFailed = errors.New("all the providers returned an error")

	// ErrProviderSetMultipleResults is returned when providers in a parallel
	// mode ProviderSet return different (conflicting) results.
	ErrProviderSetMultipleResults = errors.New("the providers returned multiple different results")
)

var (
	// ErrRoute53NoHostedZoneFound is returned when the Route53 DNS Zone provider
	// fails to find the Route53 Hosted Zone.
	ErrRoute53NoHostedZoneFound = errors.New("could not find a Route53 hosted zone")

	// ErrRoute53WatchTimedOut is returned when the update method times
	// out waiting to confirm that the change has been applied.
	ErrRoute53WatchTimedOut = errors.New("timed out")
)

var (
	// ErrDNSEmptyAnswer is returned when the DNS client receives an empty
	// response from the nameservers.
	ErrDNSEmptyAnswer = errors.New("DNS nameserver returned an empty answer")
)