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