identify

Documentation

Index

• Constants
• Variables
• func HasConsistentTransport(a ma.Multiaddr, green []ma.Multiaddr) bool
• func NewIDService(h host.Host, opts ...Option) (*idService, error)
• type IDService
• type ObservedAddrManager
  • func NewObservedAddrManager(host host.Host) (*ObservedAddrManager, error)
  • func (oas *ObservedAddrManager) Addrs() []ma.Multiaddr
  • func (oas *ObservedAddrManager) AddrsFor(addr ma.Multiaddr) (addrs []ma.Multiaddr)
  • func (oas *ObservedAddrManager) Close() error
  • func (oas *ObservedAddrManager) Record(conn network.Conn, observed ma.Multiaddr)
  • func (oas *ObservedAddrManager) SetTTL(ttl time.Duration)
  • func (oas *ObservedAddrManager) TTL() time.Duration
• type Option
  • func DisableSignedPeerRecord() Option
  • func ProtocolVersion(s string) Option
  • func UserAgent(ua string) Option

Constants

const DefaultProtocolVersion = "ipfs/0.1.0"

const ID = "/ipfs/id/1.0.0"

ID is the protocol.ID of version 1.0.0 of the identify service.

const IDDelta = "/p2p/id/delta/1.0.0"

const IDPush = "/ipfs/id/push/1.0.0"

IDPush is the protocol.ID of the Identify push protocol. It sends full identify messages containing the current state of the peer.

It is in the process of being replaced by identify delta, which sends only diffs for better resource utilisation.

const ServiceName = "libp2p.identify"

Variables

var ActivationThresh = 4

ActivationThresh sets how many times an address must be seen as "activated" and therefore advertised to other peers as an address that the local peer can be contacted on. The "seen" events expire by default after 40 minutes (OwnObservedAddressTTL * ActivationThreshold). The are cleaned up during the GC rounds set by GCInterval.

var GCInterval = 10 * time.Minute

GCInterval specicies how often to make a round cleaning seen events and observed addresses. An address will be cleaned if it has not been seen in OwnObservedAddressTTL (10 minutes). A "seen" event will be cleaned up if it is older than OwnObservedAddressTTL * ActivationThresh (40 minutes).

var StreamReadTimeout = 60 * time.Second

StreamReadTimeout is the read timeout on all incoming Identify family streams.

Functions

func HasConsistentTransport

func HasConsistentTransport(a ma.Multiaddr, green []ma.Multiaddr) bool

HasConsistentTransport returns true if the address 'a' shares a protocol set with any address in the green set. This is used to check if a given address might be one of the addresses a peer is listening on.

func NewIDService

func NewIDService(h host.Host, opts ...Option) (*idService, error)

NewIDService constructs a new *idService and activates it by attaching its stream handler to the given host.Host.

Types

type IDService

type IDService interface {
	// IdentifyConn synchronously triggers an identify request on the connection and
	// waits for it to complete. If the connection is being identified by another
	// caller, this call will wait. If the connection has already been identified,
	// it will return immediately.
	IdentifyConn(network.Conn)
	// IdentifyWait triggers an identify (if the connection has not already been
	// identified) and returns a channel that is closed when the identify protocol
	// completes.
	IdentifyWait(network.Conn) <-chan struct{}
	// OwnObservedAddrs returns the addresses peers have reported we've dialed from
	OwnObservedAddrs() []ma.Multiaddr
	// ObservedAddrsFor returns the addresses peers have reported we've dialed from,
	// for a specific local address.
	ObservedAddrsFor(local ma.Multiaddr) []ma.Multiaddr
	io.Closer
}

type ObservedAddrManager

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

ObservedAddrManager keeps track of a ObservedAddrs.

func NewObservedAddrManager

func NewObservedAddrManager(host host.Host) (*ObservedAddrManager, error)

NewObservedAddrManager returns a new address manager using peerstore.OwnObservedAddressTTL as the TTL.

func (*ObservedAddrManager) Addrs

func (oas *ObservedAddrManager) Addrs() []ma.Multiaddr

Addrs return all activated observed addresses

func (*ObservedAddrManager) AddrsFor

func (oas *ObservedAddrManager) AddrsFor(addr ma.Multiaddr) (addrs []ma.Multiaddr)

AddrsFor return all activated observed addresses associated with the given (resolved) listen address.

func (*ObservedAddrManager) Close

func (oas *ObservedAddrManager) Close() error

func (*ObservedAddrManager) Record

func (oas *ObservedAddrManager) Record(conn network.Conn, observed ma.Multiaddr)

Record records an address observation, if valid.

func (*ObservedAddrManager) SetTTL

func (oas *ObservedAddrManager) SetTTL(ttl time.Duration)

SetTTL sets the TTL of an observed address manager.

func (*ObservedAddrManager) TTL

func (oas *ObservedAddrManager) TTL() time.Duration

TTL gets the TTL of an observed address manager.

type Option

type Option func(*config)

Option is an option function for identify.

func DisableSignedPeerRecord

func DisableSignedPeerRecord() Option

DisableSignedPeerRecord disables populating signed peer records on the outgoing Identify response and ONLY sends the unsigned addresses.

func ProtocolVersion

func ProtocolVersion(s string) Option

ProtocolVersion sets the protocol version string that will be used to identify the family of protocols used by the peer.

func UserAgent

func UserAgent(ua string) Option

UserAgent sets the user agent this node will identify itself with to peers.