p2p

package
v0.3.0 Latest Latest
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 Go to latest Published: Aug 25, 2023 License: Apache-2.0 Imports: 28 Imported by: 3

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Index

Constants

This section is empty.

Variables

View Source 
var GossibSubScore = pubsub.TopicScoreParams{

	TopicWeight: 0.1,

	TimeInMeshWeight:  0.0002778,
	TimeInMeshQuantum: time.Second,
	TimeInMeshCap:     1,

	FirstMessageDeliveriesWeight: 5,
	FirstMessageDeliveriesDecay:  pubsub.ScoreParameterDecay(time.Hour),
	FirstMessageDeliveriesCap:    100,

	InvalidMessageDeliveriesWeight: -1000,
	InvalidMessageDeliveriesDecay:  pubsub.ScoreParameterDecay(time.Hour),
}

GossibSubScore provides a set of recommended parameters for header GossipSub topic, a.k.a HeaderSub.

Functions

func PubsubTopicID added in v0.1.1 

func PubsubTopicID(networkID string) string

Types

type ClientParameters 

type ClientParameters struct {
	// MaxHeadersPerRangeRequest defines the max amount of headers that can be requested per 1 request.
	MaxHeadersPerRangeRequest uint64
	// RangeRequestTimeout defines a timeout after which the session will try to re-request headers
	// from another peer.
	RangeRequestTimeout time.Duration
	// contains filtered or unexported fields
}

ClientParameters is the set of parameters that must be configured for the exchange.

func DefaultClientParameters 

func DefaultClientParameters() ClientParameters

DefaultClientParameters returns the default params to configure the store.

func (*ClientParameters) Validate 

func (p *ClientParameters) Validate() error

type Exchange 

type Exchange[H header.Header[H]] struct {
	Params ClientParameters
	// contains filtered or unexported fields
}

Exchange enables sending outbound HeaderRequests to the network as well as handling inbound HeaderRequests from the network.

func NewExchange 

func NewExchange[H header.Header[H]](
	host host.Host,
	peers peer.IDSlice,
	gater *conngater.BasicConnectionGater,
	opts ...Option[ClientParameters],
) (*Exchange[H], error)

func (*Exchange[H]) Get 

func (ex *Exchange[H]) Get(ctx context.Context, hash header.Hash) (H, error)

Get performs a request for the Header by the given hash corresponding to the RawHeader. Note that the Header must be verified thereafter.

func (*Exchange[H]) GetByHeight 

func (ex *Exchange[H]) GetByHeight(ctx context.Context, height uint64) (H, error)

GetByHeight performs a request for the Header at the given height to the network. Note that the Header must be verified thereafter.

func (*Exchange[H]) GetRangeByHeight 

func (ex *Exchange[H]) GetRangeByHeight(ctx context.Context, from, amount uint64) ([]H, error)

GetRangeByHeight performs a request for the given range of Headers to the network. Note that the Headers must be verified thereafter.

func (*Exchange[H]) GetVerifiedRange 

func (ex *Exchange[H]) GetVerifiedRange(
	ctx context.Context,
	from H,
	amount uint64,
) ([]H, error)

GetVerifiedRange performs a request for the given range of Headers to the network and ensures that returned headers are correct against the passed one.

func (*Exchange[H]) Head 

func (ex *Exchange[H]) Head(ctx context.Context, opts ...header.HeadOption[H]) (H, error)

Head requests the latest Header from trusted peers.

The Head must be verified thereafter where possible. We request in parallel all the trusted peers, compare their response and return the highest one.

func (*Exchange[H]) InitMetrics added in v0.1.1 

func (ex *Exchange[H]) InitMetrics() error

func (*Exchange[H]) Start 

func (ex *Exchange[H]) Start(ctx context.Context) error

func (*Exchange[H]) Stop 

func (ex *Exchange[H]) Stop(ctx context.Context) error

type ExchangeServer 

type ExchangeServer[H header.Header[H]] struct {
	Params ServerParameters
	// contains filtered or unexported fields
}

ExchangeServer represents the server-side component for responding to inbound header-related requests.

func NewExchangeServer 

func NewExchangeServer[H header.Header[H]](
	host host.Host,
	store header.Store[H],
	opts ...Option[ServerParameters],
) (*ExchangeServer[H], error)

NewExchangeServer returns a new P2P server that handles inbound header-related requests.

func (*ExchangeServer[H]) Start 

func (serv *ExchangeServer[H]) Start(context.Context) error

Start sets the stream handler for inbound header-related requests.

func (*ExchangeServer[H]) Stop 

func (serv *ExchangeServer[H]) Stop(context.Context) error

Stop removes the stream handler for serving header-related requests.

type Option 

type Option[T parameters] func(*T)

Option is the functional option that is applied to the exchange instance to configure parameters.

func WithChainID added in v0.1.1 

func WithChainID[T ClientParameters](chainID string) Option[T]

WithChainID is a functional option that configures the `chainID` parameter.

func WithMaxHeadersPerRangeRequest added in v0.1.1 

func WithMaxHeadersPerRangeRequest[T ClientParameters](amount uint64) Option[T]

WithMaxHeadersPerRangeRequest is a functional option that configures the // `MaxRangeRequestSize` parameter.

func WithNetworkID added in v0.1.1 

func WithNetworkID[T parameters](networkID string) Option[T]

WithNetworkID is a functional option that configures the `networkID` parameter.

func WithParams added in v0.2.6 

func WithParams[T parameters](params T) Option[T]

WithParams is a functional option that overrides Client/ServerParameters

func WithPeerIDStore added in v0.2.9 

func WithPeerIDStore[T ClientParameters](pidstore PeerIDStore) Option[T]

WithPeerIDStore is a functional option that sets a peerIDStore to be used inside the peerTracker.

func WithRangeRequestTimeout added in v0.1.1 

func WithRangeRequestTimeout[T parameters](duration time.Duration) Option[T]

WithRangeRequestTimeout is a functional option that configures the `RangeRequestTimeout` parameter.

func WithReadDeadline 

func WithReadDeadline[T ServerParameters](deadline time.Duration) Option[T]

WithReadDeadline is a functional option that configures the `WithReadDeadline` parameter.

func WithWriteDeadline 

func WithWriteDeadline[T ServerParameters](deadline time.Duration) Option[T]

WithWriteDeadline is a functional option that configures the `WriteDeadline` parameter.

type PeerIDStore added in v0.2.9 

type PeerIDStore interface {
	// Put stores the given peer IDs.
	Put(ctx context.Context, peers []peer.ID) error
	// Load loads the peer IDs from the store.
	Load(ctx context.Context) ([]peer.ID, error)
}

PeerIDStore is a utility for persisting peer IDs of good peers to a datastore.

type ServerParameters 

type ServerParameters struct {
	// WriteDeadline sets the timeout for sending messages to the stream
	WriteDeadline time.Duration
	// ReadDeadline sets the timeout for reading messages from the stream
	ReadDeadline time.Duration
	// RangeRequestTimeout defines a timeout after which the session will try to re-request headers
	// from another peer.
	RangeRequestTimeout time.Duration
	// contains filtered or unexported fields
}

ServerParameters is the set of parameters that must be configured for the exchange.

func DefaultServerParameters 

func DefaultServerParameters() ServerParameters

DefaultServerParameters returns the default params to configure the store.

func (*ServerParameters) Validate 

func (p *ServerParameters) Validate() error

type Subscriber 

type Subscriber[H header.Header[H]] struct {
	// contains filtered or unexported fields
}

Subscriber manages the lifecycle and relationship of header Module with the "header-sub" gossipsub topic.

func NewSubscriber 

func NewSubscriber[H header.Header[H]](
	ps *pubsub.PubSub,
	msgID pubsub.MsgIdFunction,
	networkID string,
) *Subscriber[H]

NewSubscriber returns a Subscriber that manages the header Module's relationship with the "header-sub" gossipsub topic.

func (*Subscriber[H]) Broadcast 

func (p *Subscriber[H]) Broadcast(ctx context.Context, header H, opts ...pubsub.PubOpt) error

Broadcast broadcasts the given Header to the topic.

func (*Subscriber[H]) SetVerifier added in v0.3.0 

func (p *Subscriber[H]) SetVerifier(val func(context.Context, H) error) error

SetVerifier set given verification func as Header PubSub topic validator Does not punish peers if *header.VerifyError is given with Uncertain set to true.

func (*Subscriber[H]) Start 

func (p *Subscriber[H]) Start(context.Context) (err error)

Start starts the Subscriber, registering a topic validator for the "header-sub" topic and joining it.

func (*Subscriber[H]) Stop 

func (p *Subscriber[H]) Stop(context.Context) error

Stop closes the topic and unregisters its validator.

func (*Subscriber[H]) Subscribe 

func (p *Subscriber[H]) Subscribe() (header.Subscription[H], error)

Subscribe returns a new subscription to the Subscriber's topic.

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