neoneo-go/pkg/network/payload/getblockdata.go
2020-05-22 19:16:49 +03:00

39 lines
894 B
Go

package payload
import (
"errors"
"github.com/nspcc-dev/neo-go/pkg/io"
)
// maximum number of blocks to query about
const maxBlockCount = 500
// GetBlockData payload
type GetBlockData struct {
IndexStart uint32
Count uint16
}
// NewGetBlockData returns GetBlockData payload with specified start index and count
func NewGetBlockData(indexStart uint32, count uint16) *GetBlockData {
return &GetBlockData{
IndexStart: indexStart,
Count: count,
}
}
// DecodeBinary implements Serializable interface.
func (d *GetBlockData) DecodeBinary(br *io.BinReader) {
d.IndexStart = br.ReadU32LE()
d.Count = br.ReadU16LE()
if d.Count == 0 || d.Count > maxBlockCount {
br.Err = errors.New("invalid block count")
}
}
// EncodeBinary implements Serializable interface.
func (d *GetBlockData) EncodeBinary(bw *io.BinWriter) {
bw.WriteU32LE(d.IndexStart)
bw.WriteU16LE(d.Count)
}