func TestSetupTunDevice(t *testing.T) {
var err error
if err := exec.Command("sudo", "ip", "tuntap", "del", "tun87", "mode", "tun").Run(); err != nil {
// t.Fatal(err)
}
if err = exec.Command("sudo", "ip", "tuntap", "add", deviceName, "mode", "tun").Run(); err != nil {
t.Fatal(err)
}
if err = exec.Command("sudo", "ip", "link", "set", deviceName, "up").Run(); err != nil {
t.Fatal(err)
}
if err = exec.Command("sudo", "ip", "addr", "add", deviceMask, "dev", deviceName).Run(); err != nil {
t.Fatal(err)
}
if iface, err = tuntap.Open(deviceName, tuntap.DevTun); err != nil {
t.Fatal(err)
}
tunio = NewTunIO(&mockDialer{})
go runPacketCaptureLoop(iface, tunio)
}
func startDevPump() error {
var err error
tunDev, err = tuntap.Open("tunTCP%d", tuntap.DevTun)
if err != nil {
return err
}
if err := setupTun(tunDev, tunAddr); err != nil {
tunDev.Close()
return err
}
return nil
}
func main() {
if len(os.Args) != 3 {
fmt.Println("syntax:", os.Args[0], "tun|tap", "<device name>")
return
}
var typ tuntap.DevKind
switch os.Args[1] {
case "tun":
typ = tuntap.DevTun
case "tap":
typ = tuntap.DevTap
default:
fmt.Println("Unknown device type", os.Args[1])
return
}
tun, err := tuntap.Open(os.Args[2], typ)
if err != nil {
fmt.Println("Error opening tun/tap device:", err)
return
}
fmt.Println("Listening on", tun.Name())
for {
pkt, err := tun.ReadPacket()
if err != nil {
fmt.Println("Read error:", err)
} else {
if pkt.Truncated {
fmt.Printf("!")
} else {
fmt.Printf(" ")
}
fmt.Printf("%x %x\n", pkt.Protocol, pkt.Packet)
}
}
}