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reset_stream_frame.go
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/
reset_stream_frame.go
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package wire
import (
"bytes"
"v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/protocol"
"v2ray.com/core/external/github.com/lucas-clemente/quic-go/internal/utils"
)
// A ResetStreamFrame is a RESET_STREAM frame in QUIC
type ResetStreamFrame struct {
StreamID protocol.StreamID
ErrorCode protocol.ApplicationErrorCode
ByteOffset protocol.ByteCount
}
func parseResetStreamFrame(r *bytes.Reader, version protocol.VersionNumber) (*ResetStreamFrame, error) {
if _, err := r.ReadByte(); err != nil { // read the TypeByte
return nil, err
}
var streamID protocol.StreamID
var errorCode uint16
var byteOffset protocol.ByteCount
sid, err := utils.ReadVarInt(r)
if err != nil {
return nil, err
}
streamID = protocol.StreamID(sid)
errorCode, err = utils.BigEndian.ReadUint16(r)
if err != nil {
return nil, err
}
bo, err := utils.ReadVarInt(r)
if err != nil {
return nil, err
}
byteOffset = protocol.ByteCount(bo)
return &ResetStreamFrame{
StreamID: streamID,
ErrorCode: protocol.ApplicationErrorCode(errorCode),
ByteOffset: byteOffset,
}, nil
}
func (f *ResetStreamFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error {
b.WriteByte(0x4)
utils.WriteVarInt(b, uint64(f.StreamID))
utils.BigEndian.WriteUint16(b, uint16(f.ErrorCode))
utils.WriteVarInt(b, uint64(f.ByteOffset))
return nil
}
// Length of a written frame
func (f *ResetStreamFrame) Length(version protocol.VersionNumber) protocol.ByteCount {
return 1 + utils.VarIntLen(uint64(f.StreamID)) + 2 + utils.VarIntLen(uint64(f.ByteOffset))
}