onionmsg

var (
	// ErrNotStarted is returned if the messenger hasn't been started yet
	// and can't perform an operation.
	ErrNotStarted = errors.New("messenger not started")

	// ErrHandlerNotFound is returned when we try to de-register a handler
	// that isn't currently registered.
	ErrHandlerNotFound = errors.New("handler not found")

	// ErrHandlerRegistered is returned when we try to register a handler
	// for a type that already exists.
	ErrHandlerRegistered = errors.New("handler already registered")

	// ErrNoAddresses is returned when we can't find a node's address in the
	// public graph.
	ErrNoAddresses = errors.New("no advertised addresses")

	// ErrNoConnection is returned if we don't successfully connect to our
	// peer within our set number of retries.
	ErrNoConnection = errors.New("peer not connected within wait period")

	// ErrNoPath is returned when we can't find a path to a peer to deliver
	// an onion message.
	ErrNoPath = errors.New("path not found to peer")

	// ErrFinalPayload is returned if an intermediate hop in an onion
	// message chain contains fields that are reserved for the last hop.
	ErrFinalPayload = errors.New("intermediate hop has final hop payloads")

	// ErrBadMessage is returned when we can't process an onion message.
	ErrBadMessage = errors.New("onion message processing failed")

	// ErrBadOnionMsg is returned when we receive a bad onion message.
	ErrBadOnionMsg = errors.New("invalid onion message")

	// ErrBadOnionBlob is returned when we receive a bad onion blob within
	// our onion message.
	ErrBadOnionBlob = errors.New("invalid onion blob")

	// ErrNilPubkeyInRoute is returned when we query lnd for a route and
	// do not get a node pubkey alongside a channel.
	ErrNilPubkeyInRoute = errors.New("nil pubkey in route")

	// ErrNoForwardingOnion is returned when we try to forward an onion
	// message but no next onion is provided.
	ErrNoForwardingOnion = errors.New("no next onion provided to forward")

	// ErrNoNextNodeID is returned when we require a next node id in our
	// encrypted data blob and one was not provided.
	ErrNoNextNodeID = errors.New("next node ID required")

	// ErrBothDest is returned when a message request sets more than one
	// destination type.
	ErrBothDest = errors.New("cannot set blinded and un-blinded " +
		"destination")

	// ErrNoDest is returned when no destination for an onion message
	// is provided.
	ErrNoDest = errors.New("clear or blinded destination required")

	// ErrNoBlindedHops is returned when we try to send an onion message
	// to a blinded route with no hops.
	ErrNoBlindedHops = errors.New("at least one blinded hop required")

	// ErrShuttingDown is returned when the messenger exits.
	ErrShuttingDown = errors.New("messenger shutting down")

	// ErrLNDShutdown is returned when lnd shuts down one of our streams.
	ErrLNDShutdown = errors.New("lnd shutting down")
)

var (
	// ErrNoEncryptedData is returned when the encrypted data TLV is not
	// present when it is required.
	ErrNoEncryptedData = errors.New("encrypted data blob required")

	// ErrNoForwardingPayload is returned when no onion message payload
	// is provided to allow forwarding messages.
	ErrNoForwardingPayload = errors.New("no payload provided for " +
		"forwarding")
)