basichost

Documentation

Index

• Variables
• type AddrsFactory
• type BasicHost
  • func New(net inet.Network, opts ...interface{}) *BasicHost
  • func NewHost(net inet.Network, opts *HostOpts) *BasicHost
  • func (h *BasicHost) Addrs() []ma.Multiaddr
  • func (h *BasicHost) AllAddrs() []ma.Multiaddr
  • func (h *BasicHost) Close() error
  • func (h *BasicHost) ConnManager() connmgr.ConnManager
  • func (h *BasicHost) Connect(ctx context.Context, pi pstore.PeerInfo) error
  • func (h *BasicHost) GetBandwidthReporter() metrics.Reporter
  • func (h *BasicHost) ID() peer.ID
  • func (h *BasicHost) IDService() *identify.IDService
  • func (h *BasicHost) Mux() *msmux.MultistreamMuxer
  • func (h *BasicHost) Network() inet.Network
  • func (h *BasicHost) NewStream(ctx context.Context, p peer.ID, pids ...protocol.ID) (inet.Stream, error)
  • func (h *BasicHost) Peerstore() pstore.Peerstore
  • func (h *BasicHost) RemoveStreamHandler(pid protocol.ID)
  • func (h *BasicHost) SetStreamHandler(pid protocol.ID, handler inet.StreamHandler)
  • func (h *BasicHost) SetStreamHandlerMatch(pid protocol.ID, m func(string) bool, handler inet.StreamHandler)
• type HostOpts
• type NATManager
  • func NewNATManager(net inet.Network) NATManager
• type Option

Variables

var (
	// DefaultNegotiationTimeout is the default value for HostOpts.NegotiationTimeout.
	DefaultNegotiationTimeout = time.Second * 60

	// DefaultAddrsFactory is the default value for HostOpts.AddrsFactory.
	DefaultAddrsFactory = func(addrs []ma.Multiaddr) []ma.Multiaddr { return addrs }
)

Types

type AddrsFactory

type AddrsFactory func([]ma.Multiaddr) []ma.Multiaddr

AddrsFactory functions can be passed to New in order to override addresses returned by Addrs.

type BasicHost

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

BasicHost is the basic implementation of the host.Host interface. This particular host implementation:

• uses a protocol muxer to mux per-protocol streams
• uses an identity service to send + receive node information
• uses a nat service to establish NAT port mappings

func New

func New(net inet.Network, opts ...interface{}) *BasicHost

New constructs and sets up a new *BasicHost with given Network and options. Three options can be passed: NATPortMap, AddrsFactory, and metrics.Reporter. This function is deprecated in favor of NewHost and HostOpts.

func NewHost

func NewHost(net inet.Network, opts *HostOpts) *BasicHost

NewHost constructs a new *BasicHost and activates it by attaching its stream and connection handlers to the given inet.Network.

func (*BasicHost) Addrs

func (h *BasicHost) Addrs() []ma.Multiaddr

Addrs returns listening addresses that are safe to announce to the network. The output is the same as AllAddrs, but processed by AddrsFactory.

func (*BasicHost) AllAddrs

func (h *BasicHost) AllAddrs() []ma.Multiaddr

AllAddrs returns all the addresses of BasicHost at this moment in time. It's ok to not include addresses if they're not available to be used now.

func (*BasicHost) Close

func (h *BasicHost) Close() error

Close shuts down the Host's services (network, etc).

func (*BasicHost) ConnManager

func (h *BasicHost) ConnManager() connmgr.ConnManager

func (*BasicHost) Connect

func (h *BasicHost) Connect(ctx context.Context, pi pstore.PeerInfo) error

Connect ensures there is a connection between this host and the peer with given peer.ID. Connect will absorb the addresses in pi into its internal peerstore. If there is not an active connection, Connect will issue a h.Network.Dial, and block until a connection is open, or an error is returned.

func (*BasicHost) GetBandwidthReporter

func (h *BasicHost) GetBandwidthReporter() metrics.Reporter

GetBandwidthReporter exposes the Host's bandiwth metrics reporter

func (*BasicHost) ID

func (h *BasicHost) ID() peer.ID

ID returns the (local) peer.ID associated with this Host

func (*BasicHost) IDService

func (h *BasicHost) IDService() *identify.IDService

IDService returns

func (*BasicHost) Mux

func (h *BasicHost) Mux() *msmux.MultistreamMuxer

Mux returns the Mux multiplexing incoming streams to protocol handlers

func (*BasicHost) Network

func (h *BasicHost) Network() inet.Network

Network returns the Network interface of the Host

func (*BasicHost) NewStream

func (h *BasicHost) NewStream(ctx context.Context, p peer.ID, pids ...protocol.ID) (inet.Stream, error)

NewStream opens a new stream to given peer p, and writes a p2p/protocol header with given protocol.ID. If there is no connection to p, attempts to create one. If ProtocolID is "", writes no header. (Threadsafe)

func (*BasicHost) Peerstore

func (h *BasicHost) Peerstore() pstore.Peerstore

Peerstore returns the Host's repository of Peer Addresses and Keys.

func (*BasicHost) RemoveStreamHandler

func (h *BasicHost) RemoveStreamHandler(pid protocol.ID)

RemoveStreamHandler returns ..

func (*BasicHost) SetStreamHandler

func (h *BasicHost) SetStreamHandler(pid protocol.ID, handler inet.StreamHandler)

SetStreamHandler sets the protocol handler on the Host's Mux. This is equivalent to:

host.Mux().SetHandler(proto, handler)

(Threadsafe)

func (*BasicHost) SetStreamHandlerMatch

func (h *BasicHost) SetStreamHandlerMatch(pid protocol.ID, m func(string) bool, handler inet.StreamHandler)

SetStreamHandlerMatch sets the protocol handler on the Host's Mux using a matching function to do protocol comparisons

type HostOpts

type HostOpts struct {

	// MultistreamMuxer is essential for the *BasicHost and will use a sensible default value if omitted.
	MultistreamMuxer *msmux.MultistreamMuxer

	// NegotiationTimeout determines the read and write timeouts on streams.
	// If 0 or omitted, it will use DefaultNegotiationTimeout.
	// If below 0, timeouts on streams will be deactivated.
	NegotiationTimeout time.Duration

	// IdentifyService holds an implementation of the /ipfs/id/ protocol.
	// If omitted, a new *identify.IDService will be used.
	IdentifyService *identify.IDService

	// AddrsFactory holds a function which can be used to override or filter the result of Addrs.
	// If omitted, there's no override or filtering, and the results of Addrs and AllAddrs are the same.
	AddrsFactory AddrsFactory

	// NATManager takes care of setting NAT port mappings, and discovering external addresses.
	// If omitted, this will simply be disabled.
	NATManager NATManager

	//
	BandwidthReporter metrics.Reporter

	// ConnManager is a libp2p connection manager
	ConnManager connmgr.ConnManager
}

HostOpts holds options that can be passed to NewHost in order to customize construction of the *BasicHost.

type NATManager

type NATManager interface {

	// Get the NAT device managed by the NAT manager.
	NAT() *inat.NAT

	// Receive a notification when the NAT device is ready for use.
	Ready() <-chan struct{}

	// Close all resources associated with a NAT manager.
	Close() error
}

A simple interface to manage NAT devices.

func NewNATManager

func NewNATManager(net inet.Network) NATManager

Create a NAT manager.

type Option

type Option int

Option is a type used to pass in options to the host.

Deprecated in favor of HostOpts and NewHost.

const NATPortMap Option = iota

NATPortMap makes the host attempt to open port-mapping in NAT devices for all its listeners. Pass in this option in the constructor to asynchronously a) find a gateway, b) open port mappings, c) republish port mappings periodically. The NATed addresses are included in the Host's Addrs() list.

This option is deprecated in favor of HostOpts and NewHost.