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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package disco
import (
"fmt"
"net/netip"
"reflect"
"strings"
"testing"
"time"
"go4.org/mem"
"tailscale.com/types/key"
)
func TestMarshalAndParse(t *testing.T) {
relayHandshakeCommon := BindUDPRelayEndpointCommon{
VNI: 1,
Generation: 2,
RemoteKey: key.DiscoPublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 30: 30, 31: 31})),
Challenge: [BindUDPRelayChallengeLen]byte{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
},
}
udpRelayEndpoint := UDPRelayEndpoint{
ServerDisco: key.DiscoPublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 30: 30, 31: 31})),
ClientDisco: [2]key.DiscoPublic{key.DiscoPublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 3: 3, 30: 30, 31: 31})), key.DiscoPublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 4: 4, 30: 30, 31: 31}))},
LamportID: 123,
VNI: 456,
BindLifetime: time.Second,
SteadyStateLifetime: time.Minute,
AddrPorts: []netip.AddrPort{
netip.MustParseAddrPort("1.2.3.4:567"),
netip.MustParseAddrPort("[2001::3456]:789"),
},
}
tests := []struct {
name string
want string
m Message
}{
{
name: "ping",
m: &Ping{
TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
},
want: "01 00 01 02 03 04 05 06 07 08 09 0a 0b 0c",
},
{
name: "ping_with_nodekey_src",
m: &Ping{
TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
NodeKey: key.NodePublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 30: 30, 31: 31})),
},
want: "01 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f",
},
{
name: "ping_with_padding",
m: &Ping{
TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
Padding: 3,
},
want: "01 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 00 00 00",
},
{
name: "ping_with_padding_and_nodekey_src",
m: &Ping{
TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
NodeKey: key.NodePublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 30: 30, 31: 31})),
Padding: 3,
},
want: "01 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 00 00",
},
{
name: "pong",
m: &Pong{
TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
Src: mustIPPort("2.3.4.5:1234"),
},
want: "02 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 00 00 00 00 00 00 00 00 00 00 ff ff 02 03 04 05 04 d2",
},
{
name: "pongv6",
m: &Pong{
TxID: [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
Src: mustIPPort("[fed0::12]:6666"),
},
want: "02 00 01 02 03 04 05 06 07 08 09 0a 0b 0c fe d0 00 00 00 00 00 00 00 00 00 00 00 00 00 12 1a 0a",
},
{
name: "call_me_maybe",
m: &CallMeMaybe{},
want: "03 00",
},
{
name: "call_me_maybe_endpoints",
m: &CallMeMaybe{
MyNumber: []netip.AddrPort{
netip.MustParseAddrPort("1.2.3.4:567"),
netip.MustParseAddrPort("[2001::3456]:789"),
},
},
want: "03 00 00 00 00 00 00 00 00 00 00 00 ff ff 01 02 03 04 02 37 20 01 00 00 00 00 00 00 00 00 00 00 00 00 34 56 03 15",
},
{
name: "bind_udp_relay_endpoint",
m: &BindUDPRelayEndpoint{
relayHandshakeCommon,
},
want: "04 00 00 00 00 01 00 00 00 02 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f",
},
{
name: "bind_udp_relay_endpoint_challenge",
m: &BindUDPRelayEndpointChallenge{
relayHandshakeCommon,
},
want: "05 00 00 00 00 01 00 00 00 02 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f",
},
{
name: "bind_udp_relay_endpoint_answer",
m: &BindUDPRelayEndpointAnswer{
relayHandshakeCommon,
},
want: "06 00 00 00 00 01 00 00 00 02 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f",
},
{
name: "call_me_maybe_via",
m: &CallMeMaybeVia{
UDPRelayEndpoint: udpRelayEndpoint,
},
want: "07 00 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 00 00 00 00 00 00 7b 00 00 01 c8 00 00 00 00 3b 9a ca 00 00 00 00 0d f8 47 58 00 00 00 00 00 00 00 00 00 00 00 ff ff 01 02 03 04 02 37 20 01 00 00 00 00 00 00 00 00 00 00 00 00 34 56 03 15",
},
{
name: "allocate_udp_relay_endpoint_request",
m: &AllocateUDPRelayEndpointRequest{
ClientDisco: [2]key.DiscoPublic{key.DiscoPublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 3: 3, 30: 30, 31: 31})), key.DiscoPublicFromRaw32(mem.B([]byte{1: 1, 2: 2, 4: 4, 30: 30, 31: 31}))},
Generation: 1,
},
want: "08 00 00 01 02 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 00 00 01",
},
{
name: "allocate_udp_relay_endpoint_response",
m: &AllocateUDPRelayEndpointResponse{
Generation: 1,
UDPRelayEndpoint: udpRelayEndpoint,
},
want: "09 00 00 00 00 01 00 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 01 02 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1e 1f 00 00 00 00 00 00 00 7b 00 00 01 c8 00 00 00 00 3b 9a ca 00 00 00 00 0d f8 47 58 00 00 00 00 00 00 00 00 00 00 00 ff ff 01 02 03 04 02 37 20 01 00 00 00 00 00 00 00 00 00 00 00 00 34 56 03 15",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
foo := []byte("foo")
got := string(tt.m.AppendMarshal(foo))
got, ok := strings.CutPrefix(got, "foo")
if !ok {
t.Fatalf("didn't start with foo: got %q", got)
}
gotHex := fmt.Sprintf("% x", got)
if gotHex != tt.want {
t.Fatalf("wrong marshal\n got: %s\nwant: %s\n", gotHex, tt.want)
}
back, err := Parse([]byte(got))
if err != nil {
t.Fatalf("parse back: %v", err)
}
if !reflect.DeepEqual(back, tt.m) {
t.Errorf("message in %+v doesn't match Parse back result %+v", tt.m, back)
}
})
}
}
func mustIPPort(s string) netip.AddrPort {
ipp, err := netip.ParseAddrPort(s)
if err != nil {
panic(err)
}
return ipp
}
|
