func (d *afpacket) Write(from ethernet.Frame) (err error) {
copy(d.sockaddrLL.Addr[:6], []byte(from.Destination()))
err = unix.Sendto(d.fd, []byte(from), 0, d.sockaddrLL)
if err != nil {
return
}
return
}
func TestReadFrame(t *testing.T) {
var (
ifce *net.Interface
err error
d Dev
)
if ifce, err = net.InterfaceByName(*dev); err != nil {
t.Fatalf("getting interface error: %v", err)
}
d, err = NewDev(ifce, nil)
if err != nil {
t.Fatal(err)
}
var to ethernet.Frame
for i := 0; i < 16; i++ {
err = d.Read(&to)
t.Logf("got frame: from %v to %v (ethertype %v): % x\n", to.Source(), to.Destination(), to.Ethertype(), to.Payload())
if err != nil {
t.Fatal(err)
}
}
err = d.Close()
if err != nil {
t.Fatal(err)
}
for i := 0; i < 1024; i++ {
err = d.Read(&to)
if err != nil {
break
}
}
if err == nil {
t.Fatal("closed Dev can still read")
}
}
