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v2fly/vendor/github.com/lucas-clemente/quic-go/crypto_stream.go
2018-11-21 10:49:41 +01:00

42 lines
1.2 KiB
Go

package quic
import (
"io"
"github.com/lucas-clemente/quic-go/internal/flowcontrol"
"github.com/lucas-clemente/quic-go/internal/protocol"
"github.com/lucas-clemente/quic-go/internal/wire"
)
type cryptoStream interface {
StreamID() protocol.StreamID
io.Reader
io.Writer
handleStreamFrame(*wire.StreamFrame) error
popStreamFrame(protocol.ByteCount) (*wire.StreamFrame, bool)
closeForShutdown(error)
setReadOffset(protocol.ByteCount)
// methods needed for flow control
getWindowUpdate() protocol.ByteCount
handleMaxStreamDataFrame(*wire.MaxStreamDataFrame)
}
type cryptoStreamImpl struct {
*stream
}
var _ cryptoStream = &cryptoStreamImpl{}
func newCryptoStream(sender streamSender, flowController flowcontrol.StreamFlowController, version protocol.VersionNumber) cryptoStream {
str := newStream(version.CryptoStreamID(), sender, flowController, version)
return &cryptoStreamImpl{str}
}
// SetReadOffset sets the read offset.
// It is only needed for the crypto stream.
// It must not be called concurrently with any other stream methods, especially Read and Write.
func (s *cryptoStreamImpl) setReadOffset(offset protocol.ByteCount) {
s.receiveStream.readOffset = offset
s.receiveStream.frameQueue.readPos = offset
}