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package quic
import (
"fmt"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/internal/wire"
)
type cryptoStreamManager struct {
initialStream *initialCryptoStream
handshakeStream *cryptoStream
oneRTTStream *cryptoStream
}
func newCryptoStreamManager(
initialStream *initialCryptoStream,
handshakeStream *cryptoStream,
oneRTTStream *cryptoStream,
) *cryptoStreamManager {
return &cryptoStreamManager{
initialStream: initialStream,
handshakeStream: handshakeStream,
oneRTTStream: oneRTTStream,
}
}
func (m *cryptoStreamManager) HandleCryptoFrame(frame *wire.CryptoFrame, encLevel protocol.EncryptionLevel) error {
//nolint:exhaustive // CRYPTO frames cannot be sent in 0-RTT packets.
switch encLevel {
case protocol.EncryptionInitial:
return m.initialStream.HandleCryptoFrame(frame)
case protocol.EncryptionHandshake:
return m.handshakeStream.HandleCryptoFrame(frame)
case protocol.Encryption1RTT:
return m.oneRTTStream.HandleCryptoFrame(frame)
default:
return fmt.Errorf("received CRYPTO frame with unexpected encryption level: %s", encLevel)
}
}
func (m *cryptoStreamManager) GetCryptoData(encLevel protocol.EncryptionLevel) []byte {
//nolint:exhaustive // CRYPTO frames cannot be sent in 0-RTT packets.
switch encLevel {
case protocol.EncryptionInitial:
return m.initialStream.GetCryptoData()
case protocol.EncryptionHandshake:
return m.handshakeStream.GetCryptoData()
case protocol.Encryption1RTT:
return m.oneRTTStream.GetCryptoData()
default:
panic(fmt.Sprintf("received CRYPTO frame with unexpected encryption level: %s", encLevel))
}
}
func (m *cryptoStreamManager) GetPostHandshakeData(maxSize protocol.ByteCount) *wire.CryptoFrame {
if !m.oneRTTStream.HasData() {
return nil
}
return m.oneRTTStream.PopCryptoFrame(maxSize)
}
func (m *cryptoStreamManager) Drop(encLevel protocol.EncryptionLevel) error {
//nolint:exhaustive // 1-RTT keys should never get dropped.
switch encLevel {
case protocol.EncryptionInitial:
return m.initialStream.Finish()
case protocol.EncryptionHandshake:
return m.handshakeStream.Finish()
default:
panic(fmt.Sprintf("dropped unexpected encryption level: %s", encLevel))
}
}
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