Source File
	path_challenge_frame.go

Belonging Package
	github.com/quic-go/quic-go/internal/wire

package wire

import (
	"io"

	"github.com/quic-go/quic-go/internal/protocol"
)

// A PathChallengeFrame is a PATH_CHALLENGE frame
type PathChallengeFrame struct {
	Data [8]byte
}

func parsePathChallengeFrame(b []byte, _ protocol.Version) (*PathChallengeFrame, int, error) {
	f := &PathChallengeFrame{}
	if len(b) < 8 {
		return nil, 0, io.EOF
	}
	copy(f.Data[:], b)
	return f, 8, nil
}

func (f *PathChallengeFrame) Append(b []byte, _ protocol.Version) ([]byte, error) {
	b = append(b, pathChallengeFrameType)
	b = append(b, f.Data[:]...)
	return b, nil
}

// Length of a written frame
func (f *PathChallengeFrame) Length(_ protocol.Version) protocol.ByteCount {
	return 1 + 8
}

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