ceremonyclient/go-libp2p/core/network/conn.go

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2023-08-21 03:50:38 +00:00
package network
import (
"context"
"io"
ic "github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/libp2p/go-libp2p/core/protocol"
ma "github.com/multiformats/go-multiaddr"
)
// Conn is a connection to a remote peer. It multiplexes streams.
// Usually there is no need to use a Conn directly, but it may
// be useful to get information about the peer on the other side:
//
// stream.Conn().RemotePeer()
type Conn interface {
io.Closer
ConnSecurity
ConnMultiaddrs
ConnStat
ConnScoper
// ID returns an identifier that uniquely identifies this Conn within this
// host, during this run. Connection IDs may repeat across restarts.
ID() string
// NewStream constructs a new Stream over this conn.
NewStream(context.Context) (Stream, error)
// GetStreams returns all open streams over this conn.
GetStreams() []Stream
// IsClosed returns whether a connection is fully closed, so it can
// be garbage collected.
IsClosed() bool
}
// ConnectionState holds information about the connection.
type ConnectionState struct {
// The stream multiplexer used on this connection (if any). For example: /yamux/1.0.0
StreamMultiplexer protocol.ID
// The security protocol used on this connection (if any). For example: /tls/1.0.0
Security protocol.ID
// the transport used on this connection. For example: tcp
Transport string
// indicates whether StreamMultiplexer was selected using inlined muxer negotiation
UsedEarlyMuxerNegotiation bool
}
// ConnSecurity is the interface that one can mix into a connection interface to
// give it the security methods.
type ConnSecurity interface {
// LocalPeer returns our peer ID
LocalPeer() peer.ID
// RemotePeer returns the peer ID of the remote peer.
RemotePeer() peer.ID
// RemotePublicKey returns the public key of the remote peer.
RemotePublicKey() ic.PubKey
// ConnState returns information about the connection state.
ConnState() ConnectionState
}
// ConnMultiaddrs is an interface mixin for connection types that provide multiaddr
// addresses for the endpoints.
type ConnMultiaddrs interface {
// LocalMultiaddr returns the local Multiaddr associated
// with this connection
LocalMultiaddr() ma.Multiaddr
// RemoteMultiaddr returns the remote Multiaddr associated
// with this connection
RemoteMultiaddr() ma.Multiaddr
}
// ConnStat is an interface mixin for connection types that provide connection statistics.
type ConnStat interface {
// Stat stores metadata pertaining to this conn.
Stat() ConnStats
}
// ConnScoper is the interface that one can mix into a connection interface to give it a resource
// management scope
type ConnScoper interface {
// Scope returns the user view of this connection's resource scope
Scope() ConnScope
}