uquic/internal/handshake/interface.go

package handshake

import (
	"io"
	"time"

	"github.com/lucas-clemente/quic-go/internal/protocol"
)

// Sealer seals a packet
type Sealer interface {
	Seal(dst, src []byte, packetNumber protocol.PacketNumber, associatedData []byte) []byte
	Overhead() int
}

// CryptoSetup is a crypto setup
type CryptoSetup interface {
	Open(dst, src []byte, packetNumber protocol.PacketNumber, associatedData []byte) ([]byte, protocol.EncryptionLevel, error)
	HandleCryptoStream(io.ReadWriter) error
	// TODO: clean up this interface
	DiversificationNonce() []byte   // only needed for cryptoSetupServer
	SetDiversificationNonce([]byte) // only needed for cryptoSetupClient

	GetSealer() (protocol.EncryptionLevel, Sealer)
	GetSealerWithEncryptionLevel(protocol.EncryptionLevel) (Sealer, error)
	GetSealerForCryptoStream() (protocol.EncryptionLevel, Sealer)
}

// TransportParameters are parameters sent to the peer during the handshake
type TransportParameters struct {
	RequestConnectionIDTruncation         bool
	MaxReceiveStreamFlowControlWindow     protocol.ByteCount
	MaxReceiveConnectionFlowControlWindow protocol.ByteCount
	IdleTimeout                           time.Duration
}