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reset_stream_frame.go
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/
reset_stream_frame.go
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package wire
import (
"bytes"
"github.com/hugefiver/quic/internal/protocol"
"github.com/hugefiver/quic/internal/qerr"
"github.com/hugefiver/quic/quicvarint"
)
// A ResetStreamFrame is a RESET_STREAM frame in QUIC
type ResetStreamFrame struct {
StreamID protocol.StreamID
ErrorCode qerr.StreamErrorCode
FinalSize protocol.ByteCount
}
func parseResetStreamFrame(r *bytes.Reader, _ protocol.VersionNumber) (*ResetStreamFrame, error) {
if _, err := r.ReadByte(); err != nil { // read the TypeByte
return nil, err
}
var streamID protocol.StreamID
var byteOffset protocol.ByteCount
sid, err := quicvarint.Read(r)
if err != nil {
return nil, err
}
streamID = protocol.StreamID(sid)
errorCode, err := quicvarint.Read(r)
if err != nil {
return nil, err
}
bo, err := quicvarint.Read(r)
if err != nil {
return nil, err
}
byteOffset = protocol.ByteCount(bo)
return &ResetStreamFrame{
StreamID: streamID,
ErrorCode: qerr.StreamErrorCode(errorCode),
FinalSize: byteOffset,
}, nil
}
func (f *ResetStreamFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error {
b.WriteByte(0x4)
quicvarint.Write(b, uint64(f.StreamID))
quicvarint.Write(b, uint64(f.ErrorCode))
quicvarint.Write(b, uint64(f.FinalSize))
return nil
}
// Length of a written frame
func (f *ResetStreamFrame) Length(version protocol.VersionNumber) protocol.ByteCount {
return 1 + quicvarint.Len(uint64(f.StreamID)) + quicvarint.Len(uint64(f.ErrorCode)) + quicvarint.Len(uint64(f.FinalSize))
}