neoneo-go/pkg/core/header.go

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package core
import (
"encoding/binary"
"fmt"
"io"
)
// Header holds the head info of a block.
type Header struct {
// Base of the block.
BlockBase
// Padding that is fixed to 0
_ uint8
}
// DecodeBinary implements the Payload interface.
func (h *Header) DecodeBinary(r io.Reader) error {
if err := h.BlockBase.DecodeBinary(r); err != nil {
return err
}
var padding uint8
if err := binary.Read(r, binary.LittleEndian, &padding); err != nil {
return err
}
if padding != 0 {
return fmt.Errorf("format error: padding must equal 0 got %d", padding)
}
return nil
}
// EncodeBinary implements the Payload interface.
func (h *Header) EncodeBinary(w io.Writer) error {
if err := h.BlockBase.EncodeBinary(w); err != nil {
return err
}
return binary.Write(w, binary.LittleEndian, uint8(0))
}