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crypto_stream_manager.go
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/
crypto_stream_manager.go
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package quic
import (
"fmt"
"v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/protocol"
"v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/wire"
)
type cryptoDataHandler interface {
HandleMessage([]byte, protocol.EncryptionLevel) bool
}
type cryptoStreamManager struct {
cryptoHandler cryptoDataHandler
initialStream cryptoStream
handshakeStream cryptoStream
}
func newCryptoStreamManager(
cryptoHandler cryptoDataHandler,
initialStream cryptoStream,
handshakeStream cryptoStream,
) *cryptoStreamManager {
return &cryptoStreamManager{
cryptoHandler: cryptoHandler,
initialStream: initialStream,
handshakeStream: handshakeStream,
}
}
func (m *cryptoStreamManager) HandleCryptoFrame(frame *wire.CryptoFrame, encLevel protocol.EncryptionLevel) (bool /* encryption level changed */, error) {
var str cryptoStream
switch encLevel {
case protocol.EncryptionInitial:
str = m.initialStream
case protocol.EncryptionHandshake:
str = m.handshakeStream
default:
return false, fmt.Errorf("received CRYPTO frame with unexpected encryption level: %s", encLevel)
}
if err := str.HandleCryptoFrame(frame); err != nil {
return false, err
}
for {
data := str.GetCryptoData()
if data == nil {
return false, nil
}
if encLevelFinished := m.cryptoHandler.HandleMessage(data, encLevel); encLevelFinished {
return true, str.Finish()
}
}
}