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encoder.go
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/
encoder.go
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package packet
import "github.com/google/gopacket"
var (
serializeOpts = gopacket.SerializeOptions{
FixLengths: true,
ComputeChecksums: true,
}
)
// RawPacket represents a raw packet or one encoded by Encoder
type RawPacket struct {
Data []byte
}
type Encoder struct {
// buf is reusable because SerializeLayers calls the Clear method before each encoding
buf gopacket.SerializeBuffer
}
func NewEncoder() *Encoder {
return &Encoder{
buf: gopacket.NewSerializeBuffer(),
}
}
func (e Encoder) Encode(packet Packet) (RawPacket, error) {
encodedLayers, err := packet.EncodeLayers()
if err != nil {
return RawPacket{}, err
}
if err := gopacket.SerializeLayers(e.buf, serializeOpts, encodedLayers...); err != nil {
return RawPacket{}, err
}
return RawPacket{
Data: e.buf.Bytes(),
}, nil
}