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disco, wgengine/magicsock: send self node key in disco pings

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This lets clients quickly (sub-millisecond within a local LAN) map
from an ambiguous disco key to a node key without waiting for a
CallMeMaybe (over relatively high latency DERP).

Updates #3088

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-10-16 14:55:26 -07:00
committed by Brad Fitzpatrick
parent 9af27ba829
commit 75a7779b42
3 changed files with 50 additions and 5 deletions
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14
disco/disco_test.go
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@@ -11,6 +11,7 @@ import (
"testing"
"inet.af/netaddr"
"tailscale.com/tailcfg"
)
func TestMarshalAndParse(t *testing.T) {
@@ -26,6 +27,19 @@ func TestMarshalAndParse(t *testing.T) {
},
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: tailcfg.NodeKey{
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: "pong",
m: &Pong{