forked from TrueCloudLab/neoneo-go
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package payload
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import (
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"bytes"
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"encoding/binary"
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)
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// Endpoint host + port of a node.
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type Endpoint struct {
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IP [16]byte // TODO: make a uint128 type
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Port uint16
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}
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// AddrWithTime payload
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type AddrWithTime struct {
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Timestamp uint32
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Services uint64
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Addr Endpoint
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}
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// Size implements the payloader interface.
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func (p *AddrWithTime) Size() uint32 {
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return 30
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}
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// UnmarshalBinary implements the Payloader interface.
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func (p *AddrWithTime) UnmarshalBinary(b []byte) error {
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p.Timestamp = binary.LittleEndian.Uint32(b[0:4])
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p.Services = binary.LittleEndian.Uint64(b[4:12])
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binary.Read(bytes.NewReader(b[12:28]), binary.BigEndian, &p.Addr.IP)
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p.Addr.Port = binary.LittleEndian.Uint16(b[28:30])
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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 *AddrWithTime) MarshalBinary() ([]byte, error) {
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return nil, nil
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}
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// AddressList contains a slice of AddrWithTime.
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type AddressList struct {
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Addrs []*AddrWithTime
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}
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// UnmarshalBinary implements the Payloader interface.
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func (p *AddressList) UnmarshalBinary(b []byte) error {
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var lenList uint8
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binary.Read(bytes.NewReader(b[0:1]), binary.LittleEndian, &lenList)
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offset := 1 // skip the uint8 length byte.
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size := 30 // size of AddrWithTime
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for i := 0; i < int(lenList); i++ {
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address := &AddrWithTime{}
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address.UnmarshalBinary(b[offset : offset+size])
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p.Addrs = append(p.Addrs, address)
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offset += size
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}
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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 *AddressList) 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 *AddressList) Size() uint32 {
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return uint32(len(p.Addrs) * 30)
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}
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