package payload import ( "errors" "github.com/nspcc-dev/neo-go/pkg/io" "github.com/nspcc-dev/neo-go/pkg/util" ) // Maximum inventory hashes number is limited to 500. const ( MaxHashesCount = 500 ) // GetBlocks contains getblocks message payload fields. type GetBlocks struct { // Hash of the latest block that node requests. HashStart util.Uint256 Count int16 } // NewGetBlocks returns a pointer to a GetBlocks object. func NewGetBlocks(start util.Uint256, count int16) *GetBlocks { return &GetBlocks{ HashStart: start, Count: count, } } // DecodeBinary implements Serializable interface. func (p *GetBlocks) DecodeBinary(br *io.BinReader) { p.HashStart.DecodeBinary(br) p.Count = int16(br.ReadU16LE()) if p.Count < -1 || p.Count == 0 { br.Err = errors.New("invalid count") } } // EncodeBinary implements Serializable interface. func (p *GetBlocks) EncodeBinary(bw *io.BinWriter) { p.HashStart.EncodeBinary(bw) bw.WriteU16LE(uint16(p.Count)) }