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max_data_frame.go
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/
max_data_frame.go
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package wire
import (
"bytes"
"github.com/hktalent/quic-go/internal/protocol"
"github.com/hktalent/quic-go/quicvarint"
)
// A MaxDataFrame carries flow control information for the connection
type MaxDataFrame struct {
MaximumData protocol.ByteCount
}
// parseMaxDataFrame parses a MAX_DATA frame
func parseMaxDataFrame(r *bytes.Reader, _ protocol.VersionNumber) (*MaxDataFrame, error) {
if _, err := r.ReadByte(); err != nil {
return nil, err
}
frame := &MaxDataFrame{}
byteOffset, err := quicvarint.Read(r)
if err != nil {
return nil, err
}
frame.MaximumData = protocol.ByteCount(byteOffset)
return frame, nil
}
// Write writes a MAX_STREAM_DATA frame
func (f *MaxDataFrame) Append(b []byte, _ protocol.VersionNumber) ([]byte, error) {
b = append(b, 0x10)
b = quicvarint.Append(b, uint64(f.MaximumData))
return b, nil
}
// Length of a written frame
func (f *MaxDataFrame) Length(_ protocol.VersionNumber) protocol.ByteCount {
return 1 + quicvarint.Len(uint64(f.MaximumData))
}