dynamicip

package
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Published: Jun 28, 2023 License: BSD-3-Clause Imports: 11 Imported by: 0

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Constants

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const (

	// Note: All of the names below must be lowercase
	// because we lowercase the user's input in NewResolver.
	// TODO remove either ifConfig or ifConfigCo.
	// They do the same thing.
	OpenDNSName    = "opendns"
	IFConfigName   = "ifconfig"
	IFConfigCoName = "ifconfigco"
	IFConfigMeName = "ifconfigme"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Resolver

type Resolver interface {
	// Resolve and return our public IP.
	Resolve() (net.IP, error)
}

Resolver resolves our public IP

func NewResolver

func NewResolver(resolverName string) (Resolver, error)

Returns a new Resolver that uses the given service to resolve our public IP. [resolverName] must be one of: OpenDNSName, IFConfigName, IFConfigCoName, IFConfigMeName. If [resolverService] isn't one of the above, returns an error

type Updater

type Updater interface {
	// Start periodically resolving and updating our public IP.
	// Doesn't return until after Stop() is called.
	// Should be called in a goroutine.
	Dispatch(log logging.Logger)
	// Stop resolving and updating our public IP.
	Stop()
}

Updater periodically updates this node's public IP. Dispatch() and Stop() should only be called once.

func NewNoUpdater

func NewNoUpdater() Updater

func NewUpdater

func NewUpdater(
	dynamicIP ips.DynamicIPPort,
	resolver Resolver,
	updateFreq time.Duration,
) Updater

Returns a new Updater that updates [dynamicIP] every [updateFreq]. Uses [resolver] to find out what our public IP is.

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