/
bytes_to_packets.go
51 lines (45 loc) · 1.05 KB
/
bytes_to_packets.go
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package main
import (
"fmt"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
)
func main() {
payload := []byte{2, 4, 6}
options := gopacket.SerializeOptions{}
buffer := gopacket.NewSerializeBuffer()
gopacket.SerializeLayers(buffer, options,
&layers.Ethernet{},
&layers.IPv4{},
&layers.TCP{},
gopacket.Payload(payload),
)
rawBytes := buffer.Bytes()
// Decode an ethernet packet
ethPacket :=
gopacket.NewPacket(
rawBytes,
layers.LayerTypeEthernet,
gopacket.Default,
)
// with Lazy decoding it will only decode what it needs when it needs it
// This is not concurrency safe. If using concurrency, use default
ipPacket :=
gopacket.NewPacket(
rawBytes,
layers.LayerTypeIPv4,
gopacket.Lazy,
)
// With the NoCopy option, the underlying slices are referenced
// directly and not copied. If the underlying bytes change so will
// the packet
tcpPacket :=
gopacket.NewPacket(
rawBytes,
layers.LayerTypeTCP,
gopacket.NoCopy,
)
fmt.Println(ethPacket)
fmt.Println(ipPacket)
fmt.Println(tcpPacket)
}