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blocked_frame.go
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/
blocked_frame.go
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package wire
import (
"bytes"
"github.com/lucas-clemente/quic-go/internal/protocol"
"github.com/lucas-clemente/quic-go/internal/utils"
)
// A BlockedFrame is a BLOCKED frame
type BlockedFrame struct {
Offset protocol.ByteCount
}
// parseBlockedFrame parses a BLOCKED frame
func parseBlockedFrame(r *bytes.Reader, _ protocol.VersionNumber) (*BlockedFrame, error) {
if _, err := r.ReadByte(); err != nil {
return nil, err
}
offset, err := utils.ReadVarInt(r)
if err != nil {
return nil, err
}
return &BlockedFrame{
Offset: protocol.ByteCount(offset),
}, nil
}
func (f *BlockedFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error {
if !version.UsesIETFFrameFormat() {
return (&blockedFrameLegacy{}).Write(b, version)
}
typeByte := uint8(0x08)
b.WriteByte(typeByte)
utils.WriteVarInt(b, uint64(f.Offset))
return nil
}
// Length of a written frame
func (f *BlockedFrame) Length(version protocol.VersionNumber) protocol.ByteCount {
if !version.UsesIETFFrameFormat() {
return 1 + 4
}
return 1 + utils.VarIntLen(uint64(f.Offset))
}