forked from quic-go/quic-go
c2e784aaf2
ParseOtherFrames-16 148ns ± 4% 150ns ± 3% ~ (p=0.223 n=8+8) ParseAckFrame-16 302ns ± 2% 298ns ± 3% ~ (p=0.246 n=8+8) ParseStreamFrame-16 262ns ± 3% 213ns ± 2% -18.61% (p=0.000 n=8+8) ParseDatagramFrame-16 561ns ± 5% 547ns ± 4% ~ (p=0.105 n=8+8)
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
package wire
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/quic-go/quic-go/internal/protocol"
|
|
"github.com/quic-go/quic-go/internal/qerr"
|
|
"github.com/quic-go/quic-go/quicvarint"
|
|
)
|
|
|
|
// A ResetStreamFrame is a RESET_STREAM or RESET_STREAM_AT frame in QUIC
|
|
type ResetStreamFrame struct {
|
|
StreamID protocol.StreamID
|
|
ErrorCode qerr.StreamErrorCode
|
|
FinalSize protocol.ByteCount
|
|
ReliableSize protocol.ByteCount
|
|
}
|
|
|
|
func parseResetStreamFrame(b []byte, isResetStreamAt bool, _ protocol.Version) (*ResetStreamFrame, int, error) {
|
|
startLen := len(b)
|
|
streamID, l, err := quicvarint.Parse(b)
|
|
if err != nil {
|
|
return nil, 0, replaceUnexpectedEOF(err)
|
|
}
|
|
b = b[l:]
|
|
errorCode, l, err := quicvarint.Parse(b)
|
|
if err != nil {
|
|
return nil, 0, replaceUnexpectedEOF(err)
|
|
}
|
|
b = b[l:]
|
|
finalSize, l, err := quicvarint.Parse(b)
|
|
if err != nil {
|
|
return nil, 0, replaceUnexpectedEOF(err)
|
|
}
|
|
b = b[l:]
|
|
|
|
var reliableSize uint64
|
|
if isResetStreamAt {
|
|
reliableSize, l, err = quicvarint.Parse(b)
|
|
if err != nil {
|
|
return nil, 0, replaceUnexpectedEOF(err)
|
|
}
|
|
b = b[l:]
|
|
}
|
|
if reliableSize > finalSize {
|
|
return nil, 0, fmt.Errorf("RESET_STREAM_AT: reliable size can't be larger than final size (%d vs %d)", reliableSize, finalSize)
|
|
}
|
|
|
|
return &ResetStreamFrame{
|
|
StreamID: protocol.StreamID(streamID),
|
|
ErrorCode: qerr.StreamErrorCode(errorCode),
|
|
FinalSize: protocol.ByteCount(finalSize),
|
|
ReliableSize: protocol.ByteCount(reliableSize),
|
|
}, startLen - len(b), nil
|
|
}
|
|
|
|
func (f *ResetStreamFrame) Append(b []byte, _ protocol.Version) ([]byte, error) {
|
|
if f.ReliableSize == 0 {
|
|
b = quicvarint.Append(b, uint64(FrameTypeResetStream))
|
|
} else {
|
|
b = quicvarint.Append(b, uint64(FrameTypeResetStreamAt))
|
|
}
|
|
b = quicvarint.Append(b, uint64(f.StreamID))
|
|
b = quicvarint.Append(b, uint64(f.ErrorCode))
|
|
b = quicvarint.Append(b, uint64(f.FinalSize))
|
|
if f.ReliableSize > 0 {
|
|
b = quicvarint.Append(b, uint64(f.ReliableSize))
|
|
}
|
|
return b, nil
|
|
}
|
|
|
|
// Length of a written frame
|
|
func (f *ResetStreamFrame) Length(protocol.Version) protocol.ByteCount {
|
|
size := 1 // the frame type for both RESET_STREAM and RESET_STREAM_AT fits into 1 byte
|
|
if f.ReliableSize > 0 {
|
|
size += quicvarint.Len(uint64(f.ReliableSize))
|
|
}
|
|
return protocol.ByteCount(size + quicvarint.Len(uint64(f.StreamID)) + quicvarint.Len(uint64(f.ErrorCode)) + quicvarint.Len(uint64(f.FinalSize)))
|
|
}
|