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29 lines
644 B
Go
29 lines
644 B
Go
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package multicast
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import (
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"crypto/ed25519"
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"encoding/binary"
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"fmt"
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)
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type multicastAdvertisement struct {
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PublicKey ed25519.PublicKey
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Port uint16
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}
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func (m *multicastAdvertisement) MarshalBinary() ([]byte, error) {
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b := make([]byte, 0, ed25519.PublicKeySize+2)
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b = append(b, m.PublicKey...)
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b = binary.BigEndian.AppendUint16(b, m.Port)
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return b, nil
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}
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func (m *multicastAdvertisement) UnmarshalBinary(b []byte) error {
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if len(b) < ed25519.PublicKeySize+2 {
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return fmt.Errorf("invalid multicast beacon")
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}
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m.PublicKey = b[:ed25519.PublicKeySize]
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m.Port = binary.BigEndian.Uint16(b[ed25519.PublicKeySize:])
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return nil
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}
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