func TestSetICMPFilter(t *testing.T) {
switch runtime.GOOS {
case "linux":
default:
t.Skipf("not supported on %q", runtime.GOOS)
}
if os.Getuid() != 0 {
t.Skip("must be root")
}
c, err := net.ListenPacket("ip4:icmp", "127.0.0.1")
if err != nil {
t.Fatal(err)
}
defer c.Close()
p := ipv4.NewPacketConn(c)
var f ipv4.ICMPFilter
f.SetAll(true)
f.Accept(ipv4.ICMPTypeEcho)
f.Accept(ipv4.ICMPTypeEchoReply)
if err := p.SetICMPFilter(&f); err != nil {
t.Fatal(err)
}
kf, err := p.ICMPFilter()
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(kf, &f) {
t.Fatalf("got %#v; want %#v", kf, f)
}
}
func TestICMPFilter(t *testing.T) {
switch runtime.GOOS {
case "linux":
default:
t.Skipf("not supported on %q", runtime.GOOS)
}
var f ipv4.ICMPFilter
for _, toggle := range []bool{false, true} {
f.SetAll(toggle)
for _, typ := range []ipv4.ICMPType{
ipv4.ICMPTypeDestinationUnreachable,
ipv4.ICMPTypeEchoReply,
ipv4.ICMPTypeTimeExceeded,
ipv4.ICMPTypeParameterProblem,
} {
f.Accept(typ)
if f.WillBlock(typ) {
t.Errorf("ipv4.ICMPFilter.Set(%v, false) failed", typ)
}
f.Block(typ)
if !f.WillBlock(typ) {
t.Errorf("ipv4.ICMPFilter.Set(%v, true) failed", typ)
}
}
}
}