handshake

package
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Published: Mar 1, 2023 License: Apache-2.0 Imports: 17 Imported by: 0

Documentation

Index

Constants

View Source
const (
	// ProtocolName is the text of the name of the handshake protocol.
	ProtocolName = "handshake"
	// ProtocolVersion is the current handshake protocol version.
	ProtocolVersion = "4.0.0"
	// StreamName is the name of the stream used for handshake purposes.
	StreamName = "handshake"
	// MaxWelcomeMessageLength is maximum number of characters allowed in the welcome message.
	MaxWelcomeMessageLength = 140
)

Variables

View Source
var (
	// ErrNetworkIDIncompatible is returned if response from the other peer does not have valid networkID.
	ErrNetworkIDIncompatible = errors.New("incompatible network ID")

	// ErrInvalidAck is returned if data in received in ack is not valid (invalid signature for example).
	ErrInvalidAck = errors.New("invalid ack")

	// ErrInvalidSyn is returned if observable address in ack is not a valid..
	ErrInvalidSyn = errors.New("invalid syn")

	// ErrWelcomeMessageLength is returned if the welcome message is longer than the maximum length
	ErrWelcomeMessageLength = fmt.Errorf("handshake welcome message longer than maximum of %d characters", MaxWelcomeMessageLength)

	// ErrPicker is returned if the picker (kademlia) rejects the peer
	ErrPicker = fmt.Errorf("picker rejection")

	ErrPickerLight = fmt.Errorf("picker rejection light")
)

Functions

This section is empty.

Types

type AdvertisableAddressResolver

type AdvertisableAddressResolver interface {
	Resolve(observedAddress ma.Multiaddr) (ma.Multiaddr, error)
}

AdvertisableAddressResolver can Resolve a Multiaddress.

type Service

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

Service can perform initiate or handle a handshake between peers.

func New

func New(signer crypto.Signer, advertisableAddresser AdvertisableAddressResolver, overlay boson.Address, networkID uint64, nodeMode address.Model, welcomeMessage string, ownPeerID libp2ppeer.ID, logger logging.Logger, lightNodes *lightnode.Container, lightLimit int) (*Service, error)

New creates a new handshake Service.

func (*Service) GetWelcomeMessage

func (s *Service) GetWelcomeMessage() string

GetWelcomeMessage returns the current handshake welcome message.

func (*Service) Handle

func (s *Service) Handle(ctx context.Context, stream p2p.Stream, remoteMultiaddr ma.Multiaddr, remotePeerID libp2ppeer.ID) (i *address.AddressInfo, err error)

Handle handles an incoming handshake from a peer.

func (*Service) Handshake

func (s *Service) Handshake(ctx context.Context, stream p2p.Stream, peerMultiaddr ma.Multiaddr, peerID libp2ppeer.ID) (i *address.AddressInfo, err error)

Handshake initiates a handshake with a peer.

func (*Service) Metrics

func (s *Service) Metrics() []prometheus.Collector

Metrics returns set of prometheus collectors.

func (*Service) SetPicker

func (s *Service) SetPicker(n p2p.Picker)

func (*Service) SetWelcomeMessage

func (s *Service) SetWelcomeMessage(msg string) (err error)

SetWelcomeMessage sets the new handshake welcome message.

Directories

Path Synopsis
Package pb holds only Protocol Buffer definitions and generated code.
Package pb holds only Protocol Buffer definitions and generated code.

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