ceremonyclient/go-libp2p/core/host/host.go

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2023-08-21 03:50:38 +00:00
// Package host provides the core Host interface for libp2p.
//
// Host represents a single libp2p node in a peer-to-peer network.
package host
import (
"context"
"github.com/libp2p/go-libp2p/core/connmgr"
"github.com/libp2p/go-libp2p/core/event"
"github.com/libp2p/go-libp2p/core/network"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/libp2p/go-libp2p/core/peerstore"
"github.com/libp2p/go-libp2p/core/protocol"
ma "github.com/multiformats/go-multiaddr"
)
// Host is an object participating in a p2p network, which
// implements protocols or provides services. It handles
// requests like a Server, and issues requests like a Client.
// It is called Host because it is both Server and Client (and Peer
// may be confusing).
type Host interface {
// ID returns the (local) peer.ID associated with this Host
ID() peer.ID
// Peerstore returns the Host's repository of Peer Addresses and Keys.
Peerstore() peerstore.Peerstore
// Returns the listen addresses of the Host
Addrs() []ma.Multiaddr
// Networks returns the Network interface of the Host
Network() network.Network
// Mux returns the Mux multiplexing incoming streams to protocol handlers
Mux() protocol.Switch
// 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. // TODO: Relay + NAT.
Connect(ctx context.Context, pi peer.AddrInfo) error
// SetStreamHandler sets the protocol handler on the Host's Mux.
// This is equivalent to:
// host.Mux().SetHandler(proto, handler)
// (Thread-safe)
SetStreamHandler(pid protocol.ID, handler network.StreamHandler)
// SetStreamHandlerMatch sets the protocol handler on the Host's Mux
// using a matching function for protocol selection.
SetStreamHandlerMatch(protocol.ID, func(protocol.ID) bool, network.StreamHandler)
// RemoveStreamHandler removes a handler on the mux that was set by
// SetStreamHandler
RemoveStreamHandler(pid protocol.ID)
// NewStream opens a new stream to given peer p, and writes a p2p/protocol
// header with given ProtocolID. If there is no connection to p, attempts
// to create one. If ProtocolID is "", writes no header.
// (Thread-safe)
NewStream(ctx context.Context, p peer.ID, pids ...protocol.ID) (network.Stream, error)
// Close shuts down the host, its Network, and services.
Close() error
// ConnManager returns this hosts connection manager
ConnManager() connmgr.ConnManager
// EventBus returns the hosts eventbus
EventBus() event.Bus
}