p2p

package
v0.9.3 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Jul 19, 2022 License: Apache-2.0, BSD-2-Clause Imports: 26 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	// ErrNotRunning is returned when a neighbor is added to a stopped or not yet started p2p manager.
	ErrNotRunning = errors.New("manager not running")
	// ErrUnknownNeighbor is returned when the specified neighbor is not known to the p2p manager.
	ErrUnknownNeighbor = errors.New("unknown neighbor")
	// ErrLoopbackNeighbor is returned when the own peer is specified as a neighbor.
	ErrLoopbackNeighbor = errors.New("loopback connection not allowed")
	// ErrDuplicateNeighbor is returned when the same peer is added more than once as a neighbor.
	ErrDuplicateNeighbor = errors.New("already connected")
	// ErrNeighborQueueFull is returned when the send queue is already full.
	ErrNeighborQueueFull = errors.New("send queue is full")
)
View Source 
var (
	// ErrTimeout is returned when an expected incoming connection was not received in time.
	ErrTimeout = errors.New("accept timeout")
	// ErrDuplicateAccept is returned when the server already registered an accept request for that peer ID.
	ErrDuplicateAccept = errors.New("accept request for that peer already exists")
	// ErrNoP2P means that the given peer does not support the p2p service.
	ErrNoP2P = errors.New("peer does not have a p2p service")
)

Functions

func GetAddress 

func GetAddress(p *peer.Peer) string

GetAddress returns the address of the p2p service.

Types

type AcceptMatcher 

type AcceptMatcher struct {
	Peer     *peer.Peer // connecting peer
	Libp2pID libp2ppeer.ID
	StreamCh chan *PacketsStream
}

AcceptMatcher holds data to match an existing connection with a peer.

type ConnectPeerOption 

type ConnectPeerOption func(conf *connectPeerConfig)

ConnectPeerOption defines an option for the DialPeer and AcceptPeer methods.

func WithNoDefaultTimeout 

func WithNoDefaultTimeout() ConnectPeerOption

WithNoDefaultTimeout returns a ConnectPeerOption that disables the default timeout for dial or accept.

type Manager 

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

The Manager handles the connected neighbors.

func NewManager 

func NewManager(libp2pHost host.Host, local *peer.Local, log *logger.Logger) *Manager

NewManager creates a new Manager.

func (*Manager) AddInbound 

func (m *Manager) AddInbound(ctx context.Context, p *peer.Peer, group NeighborsGroup,
	connectOpts ...ConnectPeerOption,
) error

AddInbound tries to add a neighbor by accepting an incoming connection from that peer.

func (*Manager) AddOutbound 

func (m *Manager) AddOutbound(ctx context.Context, p *peer.Peer, group NeighborsGroup,
	connectOpts ...ConnectPeerOption,
) error

AddOutbound tries to add a neighbor by connecting to that peer.

func (*Manager) AllNeighbors 

func (m *Manager) AllNeighbors() []*Neighbor

AllNeighbors returns all the neighbors that are currently connected.

func (*Manager) CloseStream 

func (m *Manager) CloseStream(s network.Stream)

CloseStream closes a stream.

func (*Manager) DropNeighbor 

func (m *Manager) DropNeighbor(id identity.ID, group NeighborsGroup) error

DropNeighbor disconnects the neighbor with the given ID and the group.

func (*Manager) GetNeighbor 

func (m *Manager) GetNeighbor(id identity.ID) (*Neighbor, error)

GetNeighbor returns the neighbor by its id.

func (*Manager) GetNeighborsByID 

func (m *Manager) GetNeighborsByID(ids []identity.ID) []*Neighbor

GetNeighborsByID returns all the neighbors that are currently connected corresponding to the supplied ids.

func (*Manager) GetP2PHost 

func (m *Manager) GetP2PHost() host.Host

GetP2PHost returns the libp2p host.

func (*Manager) MatchNewStream 

func (m *Manager) MatchNewStream(stream network.Stream) *AcceptMatcher

MatchNewStream matches a new stream with a peer.

func (*Manager) NeighborGroupEvents 

func (m *Manager) NeighborGroupEvents(group NeighborsGroup) *NeighborGroupEvents

NeighborGroupEvents returns the events related to the neighbor group.

func (*Manager) RegisterProtocol 

func (m *Manager) RegisterProtocol(protocolID protocol.ID, protocolHandler *ProtocolHandler)

RegisterProtocol registers a new protocol.

func (*Manager) Stop 

func (m *Manager) Stop()

Stop stops the manager and closes all established connections.

func (*Manager) UnregisterProtocol 

func (m *Manager) UnregisterProtocol(protocolID protocol.ID)

UnregisterProtocol unregisters a protocol.

type Neighbor 

type Neighbor struct {
	*peer.Peer
	Group NeighborsGroup

	Events *NeighborEvents

	Log *logger.Logger
	// contains filtered or unexported fields
}

Neighbor describes the established p2p connection to another peer.

func NewNeighbor 

func NewNeighbor(p *peer.Peer, group NeighborsGroup, protocols map[protocol.ID]*PacketsStream, log *logger.Logger) *Neighbor

NewNeighbor creates a new neighbor from the provided peer and connection.

func (*Neighbor) Close 

func (n *Neighbor) Close()

Close closes the connection with the neighbor.

func (*Neighbor) ConnectionEstablished 

func (n *Neighbor) ConnectionEstablished() time.Time

ConnectionEstablished returns the connection established.

func (*Neighbor) GetStream 

func (n *Neighbor) GetStream(protocol protocol.ID) *PacketsStream

GetStream returns the stream for the given protocol.

func (*Neighbor) PacketsRead 

func (n *Neighbor) PacketsRead() (count uint64)

PacketsRead returns number of packets this neighbor has received.

func (*Neighbor) PacketsWritten 

func (n *Neighbor) PacketsWritten() (count uint64)

PacketsWritten returns number of packets this neighbor has sent.

type NeighborAddedEvent 

type NeighborAddedEvent struct {
	Neighbor *Neighbor
}

NeighborAddedEvent holds data about the added neighbor.

type NeighborDisconnectedEvent 

type NeighborDisconnectedEvent struct{}

NeighborDisconnectedEvent holds data about the disconnected neighbor.

type NeighborEvents 

type NeighborEvents struct {
	// Fired when a neighbor disconnects.
	Disconnected   *event.Event[*NeighborDisconnectedEvent]
	PacketReceived *event.Event[*NeighborPacketReceivedEvent]
}

NeighborEvents is a collection of events specific to a neighbor.

func NewNeighborEvents 

func NewNeighborEvents() (new *NeighborEvents)

NewNeighborEvents returns a new instance of NeighborEvents.

type NeighborGroupEvents 

type NeighborGroupEvents struct {
	// Fired when a neighbor connection has been established.
	NeighborAdded *event.Event[*NeighborAddedEvent]

	// Fired when a neighbor has been removed.
	NeighborRemoved *event.Event[*NeighborRemovedEvent]
}

NeighborGroupEvents is a collection of events specific for a particular neighbors group, e.g "manual" or "auto".

func NewNeighborGroupEvents 

func NewNeighborGroupEvents() (new *NeighborGroupEvents)

NewNeighborGroupEvents returns a new instance of NeighborGroupEvents.

type NeighborPacketReceivedEvent 

type NeighborPacketReceivedEvent struct {
	Neighbor *Neighbor
	Protocol protocol.ID
	Packet   proto.Message
}

NeighborPacketReceivedEvent holds data about a protocol and packet received from a neighbor.

type NeighborRemovedEvent 

type NeighborRemovedEvent struct {
	Neighbor *Neighbor
}

NeighborRemovedEvent holds data about the removed neighbor.

type NeighborsGroup 

type NeighborsGroup int8

NeighborsGroup is an enum type for various neighbors groups like auto/manual. 

const (
	// NeighborsGroupAuto represents a neighbors group that is managed automatically.
	NeighborsGroupAuto NeighborsGroup = iota
	// NeighborsGroupManual represents a neighbors group that is managed manually.
	NeighborsGroupManual
)

type PacketsStream 

type PacketsStream struct {
	network.Stream
	// contains filtered or unexported fields
}

PacketsStream represents a stream of packets.

func NewPacketsStream 

func NewPacketsStream(stream network.Stream, packetFactory func() proto.Message) *PacketsStream

NewPacketsStream creates a new PacketsStream.

func (*PacketsStream) ReadPacket 

func (ps *PacketsStream) ReadPacket(message proto.Message) error

ReadPacket reads a packet from the stream.

func (*PacketsStream) WritePacket 

func (ps *PacketsStream) WritePacket(message proto.Message) error

WritePacket writes a packet to the stream.

type ProtocolHandler 

type ProtocolHandler struct {
	PacketFactory      func() proto.Message
	NegotiationSend    func(ps *PacketsStream) error
	NegotiationReceive func(ps *PacketsStream) error
	PacketHandler      func(*Neighbor, proto.Message) error
}

ProtocolHandler holds callbacks to handle a protocol.

Source Files

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