63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package payload
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import (
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"bytes"
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"encoding/binary"
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. "github.com/anthdm/neo-go/pkg/util"
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)
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// The node can broadcast the object information it owns by this message.
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// The message can be sent automatically or can be used to answer getbloks messages.
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// InventoryType is the type of an object in the Inventory message.
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type InventoryType uint8
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// String implements the Stringer interface.
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func (i InventoryType) String() string {
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switch i {
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case 0x01:
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return "block"
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case 0x02:
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return "TX"
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case 0xe0:
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return "consensus"
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default:
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return "unknown inventory type"
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}
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}
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// List of valid InventoryTypes.
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const (
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BlockType InventoryType = 0x01 // 1
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TXType = 0x02 // 2
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ConsensusType = 0xe0 // 224
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)
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// Inventory payload
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type Inventory struct {
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// Type if the object hash.
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Type InventoryType
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// The hash of the object (uint256).
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Hash Uint256
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}
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// UnmarshalBinary implements the Payloader interface.
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func (p *Inventory) UnmarshalBinary(b []byte) error {
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// TODO: what byte is [1:2] ?
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// We have 1 byte for the type which is uint8 and 32 for the hash.
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// There is 1 byte left over.
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binary.Read(bytes.NewReader(b), binary.LittleEndian, &p.Type)
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p.Hash.UnmarshalBinary(b[2:len(b)])
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return nil
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}
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// MarshalBinary implements the Payloader interface.
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func (p *Inventory) MarshalBinary() ([]byte, error) {
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return nil, nil
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}
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// Size implements the Payloader interface.
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func (p *Inventory) Size() uint32 {
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return 1 + 1 + 32 // ?
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}
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