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wgengine,ipn,cmd/tailscale: add size option to ping (#8739)

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This adds the capability to pad disco ping message payloads to reach a
specified size. It also plumbs it through to the tailscale ping -size
flag.

Disco pings used for actual endpoint discovery do not use this yet.

Updates #311.

Signed-off-by: salman <salman@tailscale.com>
Co-authored-by: Val <valerie@tailscale.com>
This commit is contained in:
salman aljammaz
2023-08-08 13:11:28 +01:00
committed by GitHub
parent 49896cbdfa
commit 25a7204bb4
12 changed files with 125 additions and 30 deletions
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17
disco/disco_test.go
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@@ -35,6 +35,23 @@ func TestMarshalAndParse(t *testing.T) {
},
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{