ceremonyclient/go-libp2p/p2p/transport/quic/conn.go

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2023-08-21 03:50:38 +00:00
package libp2pquic
import (
"context"
ic "github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/network"
"github.com/libp2p/go-libp2p/core/peer"
tpt "github.com/libp2p/go-libp2p/core/transport"
ma "github.com/multiformats/go-multiaddr"
"github.com/quic-go/quic-go"
)
type conn struct {
quicConn quic.Connection
transport *transport
scope network.ConnManagementScope
localPeer peer.ID
localMultiaddr ma.Multiaddr
remotePeerID peer.ID
remotePubKey ic.PubKey
remoteMultiaddr ma.Multiaddr
}
var _ tpt.CapableConn = &conn{}
// Close closes the connection.
// It must be called even if the peer closed the connection in order for
// garbage collection to properly work in this package.
func (c *conn) Close() error {
return c.closeWithError(0, "")
}
func (c *conn) closeWithError(errCode quic.ApplicationErrorCode, errString string) error {
c.transport.removeConn(c.quicConn)
err := c.quicConn.CloseWithError(errCode, errString)
c.scope.Done()
return err
}
// IsClosed returns whether a connection is fully closed.
func (c *conn) IsClosed() bool {
return c.quicConn.Context().Err() != nil
}
func (c *conn) allowWindowIncrease(size uint64) bool {
return c.scope.ReserveMemory(int(size), network.ReservationPriorityMedium) == nil
}
// OpenStream creates a new stream.
func (c *conn) OpenStream(ctx context.Context) (network.MuxedStream, error) {
qstr, err := c.quicConn.OpenStreamSync(ctx)
return &stream{Stream: qstr}, err
}
// AcceptStream accepts a stream opened by the other side.
func (c *conn) AcceptStream() (network.MuxedStream, error) {
qstr, err := c.quicConn.AcceptStream(context.Background())
return &stream{Stream: qstr}, err
}
// LocalPeer returns our peer ID
func (c *conn) LocalPeer() peer.ID { return c.localPeer }
// RemotePeer returns the peer ID of the remote peer.
func (c *conn) RemotePeer() peer.ID { return c.remotePeerID }
// RemotePublicKey returns the public key of the remote peer.
func (c *conn) RemotePublicKey() ic.PubKey { return c.remotePubKey }
// LocalMultiaddr returns the local Multiaddr associated
func (c *conn) LocalMultiaddr() ma.Multiaddr { return c.localMultiaddr }
// RemoteMultiaddr returns the remote Multiaddr associated
func (c *conn) RemoteMultiaddr() ma.Multiaddr { return c.remoteMultiaddr }
func (c *conn) Transport() tpt.Transport { return c.transport }
func (c *conn) Scope() network.ConnScope { return c.scope }
// ConnState is the state of security connection.
func (c *conn) ConnState() network.ConnectionState {
t := "quic-v1"
if _, err := c.LocalMultiaddr().ValueForProtocol(ma.P_QUIC); err == nil {
t = "quic"
}
return network.ConnectionState{Transport: t}
}