/
main.go
37 lines (31 loc) · 811 Bytes
/
main.go
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//go:build linux && go1.9
// +build linux,go1.9
package main
import (
"log"
"os"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcapgo"
)
func main() {
f, err := os.Create("eth0.pcap")
if err != nil {
log.Fatal(err)
}
defer f.Close()
pcapw := pcapgo.NewWriter(f)
if err := pcapw.WriteFileHeader(65536, layers.LinkTypeEthernet); err != nil {
log.Fatalf("WriteFileHeader: %v", err)
}
handle, err := pcapgo.NewEthernetHandle("eth0")
if err != nil {
log.Fatalf("OpenEthernet: %v", err)
}
pkgsrc := gopacket.NewPacketSource(handle, layers.LayerTypeEthernet)
for packet := range pkgsrc.Packets() {
if err := pcapw.WritePacket(packet.Metadata().CaptureInfo, packet.Data()); err != nil {
log.Fatalf("pcap.WritePacket(): %v", err)
}
}
}