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642 lines
16 KiB
Go
642 lines
16 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package controlclient
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/netip"
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"reflect"
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"strings"
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"sync/atomic"
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"testing"
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"time"
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"go4.org/mem"
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"tailscale.com/tailcfg"
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"tailscale.com/tstest"
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"tailscale.com/tstime"
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"tailscale.com/types/key"
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"tailscale.com/types/netmap"
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"tailscale.com/types/ptr"
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"tailscale.com/util/must"
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)
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func TestUndeltaPeers(t *testing.T) {
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var curTime time.Time
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online := func(v bool) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.Online = &v
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}
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}
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seenAt := func(t time.Time) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.LastSeen = &t
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}
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}
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withDERP := func(d string) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.DERP = d
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}
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}
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withEP := func(ep string) func(*tailcfg.Node) {
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return func(n *tailcfg.Node) {
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n.Endpoints = []string{ep}
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}
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}
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n := func(id tailcfg.NodeID, name string, mod ...func(*tailcfg.Node)) *tailcfg.Node {
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n := &tailcfg.Node{ID: id, Name: name}
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for _, f := range mod {
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f(n)
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}
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return n
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}
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peers := func(nv ...*tailcfg.Node) []*tailcfg.Node { return nv }
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tests := []struct {
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name string
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mapRes *tailcfg.MapResponse
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curTime time.Time
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prev []*tailcfg.Node
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want []*tailcfg.Node
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}{
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{
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name: "full_peers",
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mapRes: &tailcfg.MapResponse{
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Peers: peers(n(1, "foo"), n(2, "bar")),
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},
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want: peers(n(1, "foo"), n(2, "bar")),
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},
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{
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name: "full_peers_ignores_deltas",
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mapRes: &tailcfg.MapResponse{
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Peers: peers(n(1, "foo"), n(2, "bar")),
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PeersRemoved: []tailcfg.NodeID{2},
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},
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want: peers(n(1, "foo"), n(2, "bar")),
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},
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{
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name: "add_and_update",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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PeersChanged: peers(n(0, "zero"), n(2, "bar2"), n(3, "three")),
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},
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want: peers(n(0, "zero"), n(1, "foo"), n(2, "bar2"), n(3, "three")),
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},
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{
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name: "remove",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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PeersRemoved: []tailcfg.NodeID{1},
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},
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want: peers(n(2, "bar")),
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},
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{
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name: "add_and_remove",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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PeersChanged: peers(n(1, "foo2")),
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PeersRemoved: []tailcfg.NodeID{2},
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},
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want: peers(n(1, "foo2")),
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},
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{
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name: "unchanged",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{},
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want: peers(n(1, "foo"), n(2, "bar")),
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},
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{
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name: "online_change",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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OnlineChange: map[tailcfg.NodeID]bool{
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1: true,
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},
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},
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want: peers(
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n(1, "foo", online(true)),
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n(2, "bar"),
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),
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},
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{
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name: "online_change_offline",
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prev: peers(n(1, "foo"), n(2, "bar")),
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mapRes: &tailcfg.MapResponse{
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OnlineChange: map[tailcfg.NodeID]bool{
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1: false,
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2: true,
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},
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},
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want: peers(
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n(1, "foo", online(false)),
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n(2, "bar", online(true)),
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),
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},
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{
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name: "peer_seen_at",
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prev: peers(n(1, "foo", seenAt(time.Unix(111, 0))), n(2, "bar")),
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curTime: time.Unix(123, 0),
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mapRes: &tailcfg.MapResponse{
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PeerSeenChange: map[tailcfg.NodeID]bool{
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1: false,
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2: true,
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},
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},
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want: peers(
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n(1, "foo"),
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n(2, "bar", seenAt(time.Unix(123, 0))),
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),
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},
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{
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name: "ep_change_derp",
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prev: peers(n(1, "foo", withDERP("127.3.3.40:3"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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DERPRegion: 4,
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}},
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},
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want: peers(n(1, "foo", withDERP("127.3.3.40:4"))),
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},
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{
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name: "ep_change_udp",
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prev: peers(n(1, "foo", withEP("1.2.3.4:111"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Endpoints: []string{"1.2.3.4:56"},
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}},
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},
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want: peers(n(1, "foo", withEP("1.2.3.4:56"))),
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},
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{
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name: "ep_change_udp",
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prev: peers(n(1, "foo", withDERP("127.3.3.40:3"), withEP("1.2.3.4:111"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Endpoints: []string{"1.2.3.4:56"},
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}},
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},
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want: peers(n(1, "foo", withDERP("127.3.3.40:3"), withEP("1.2.3.4:56"))),
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},
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{
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name: "ep_change_both",
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prev: peers(n(1, "foo", withDERP("127.3.3.40:3"), withEP("1.2.3.4:111"))),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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DERPRegion: 2,
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Endpoints: []string{"1.2.3.4:56"},
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}},
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},
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want: peers(n(1, "foo", withDERP("127.3.3.40:2"), withEP("1.2.3.4:56"))),
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},
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{
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name: "change_key",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Key: ptr.To(key.NodePublicFromRaw32(mem.B(append(make([]byte, 31), 'A')))),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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Key: key.NodePublicFromRaw32(mem.B(append(make([]byte, 31), 'A'))),
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}),
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},
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{
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name: "change_key_signature",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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KeySignature: []byte{3, 4},
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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KeySignature: []byte{3, 4},
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}),
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},
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{
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name: "change_disco_key",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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DiscoKey: ptr.To(key.DiscoPublicFromRaw32(mem.B(append(make([]byte, 31), 'A')))),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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DiscoKey: key.DiscoPublicFromRaw32(mem.B(append(make([]byte, 31), 'A'))),
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}),
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},
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{
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name: "change_online",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Online: ptr.To(true),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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Online: ptr.To(true),
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}),
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},
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{
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name: "change_last_seen",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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LastSeen: ptr.To(time.Unix(123, 0).UTC()),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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LastSeen: ptr.To(time.Unix(123, 0).UTC()),
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}),
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},
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{
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name: "change_key_expiry",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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KeyExpiry: ptr.To(time.Unix(123, 0).UTC()),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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KeyExpiry: time.Unix(123, 0).UTC(),
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}),
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},
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{
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name: "change_capabilities",
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prev: peers(n(1, "foo")),
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mapRes: &tailcfg.MapResponse{
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PeersChangedPatch: []*tailcfg.PeerChange{{
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NodeID: 1,
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Capabilities: ptr.To([]string{"foo"}),
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}},
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}, want: peers(&tailcfg.Node{
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ID: 1,
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Name: "foo",
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Capabilities: []string{"foo"},
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}),
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}}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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if !tt.curTime.IsZero() {
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curTime = tt.curTime
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tstest.Replace(t, &clock, tstime.Clock(tstest.NewClock(tstest.ClockOpts{Start: curTime})))
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}
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undeltaPeers(tt.mapRes, tt.prev)
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if !reflect.DeepEqual(tt.mapRes.Peers, tt.want) {
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t.Errorf("wrong results\n got: %s\nwant: %s", formatNodes(tt.mapRes.Peers), formatNodes(tt.want))
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}
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})
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}
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}
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func formatNodes(nodes []*tailcfg.Node) string {
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var sb strings.Builder
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for i, n := range nodes {
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if i > 0 {
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sb.WriteString(", ")
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}
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fmt.Fprintf(&sb, "(%d, %q", n.ID, n.Name)
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if n.Online != nil {
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fmt.Fprintf(&sb, ", online=%v", *n.Online)
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}
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if n.LastSeen != nil {
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fmt.Fprintf(&sb, ", lastSeen=%v", n.LastSeen.Unix())
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}
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if n.Key != (key.NodePublic{}) {
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fmt.Fprintf(&sb, ", key=%v", n.Key.String())
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}
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if n.Expired {
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fmt.Fprintf(&sb, ", expired=true")
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}
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sb.WriteString(")")
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}
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return sb.String()
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}
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func newTestMapSession(t testing.TB, nu NetmapUpdater) *mapSession {
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ms := newMapSession(key.NewNode(), nu)
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t.Cleanup(ms.Close)
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ms.logf = t.Logf
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return ms
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}
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func TestNetmapForResponse(t *testing.T) {
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t.Run("implicit_packetfilter", func(t *testing.T) {
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somePacketFilter := []tailcfg.FilterRule{
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{
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SrcIPs: []string{"*"},
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DstPorts: []tailcfg.NetPortRange{
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{IP: "10.2.3.4", Ports: tailcfg.PortRange{First: 22, Last: 22}},
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},
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},
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}
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ms := newTestMapSession(t, nil)
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nm1 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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PacketFilter: somePacketFilter,
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})
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if len(nm1.PacketFilter) == 0 {
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t.Fatalf("zero length PacketFilter")
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}
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nm2 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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PacketFilter: nil, // testing that the server can omit this.
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})
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if len(nm1.PacketFilter) == 0 {
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t.Fatalf("zero length PacketFilter in 2nd netmap")
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}
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if !reflect.DeepEqual(nm1.PacketFilter, nm2.PacketFilter) {
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t.Error("packet filters differ")
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}
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})
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t.Run("implicit_dnsconfig", func(t *testing.T) {
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someDNSConfig := &tailcfg.DNSConfig{Domains: []string{"foo", "bar"}}
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ms := newTestMapSession(t, nil)
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nm1 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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DNSConfig: someDNSConfig,
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})
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if !reflect.DeepEqual(nm1.DNS, *someDNSConfig) {
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t.Fatalf("1st DNS wrong")
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}
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nm2 := ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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DNSConfig: nil, // implicit
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})
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if !reflect.DeepEqual(nm2.DNS, *someDNSConfig) {
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t.Fatalf("2nd DNS wrong")
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}
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})
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t.Run("collect_services", func(t *testing.T) {
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ms := newTestMapSession(t, nil)
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var nm *netmap.NetworkMap
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wantCollect := func(v bool) {
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t.Helper()
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if nm.CollectServices != v {
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t.Errorf("netmap.CollectServices = %v; want %v", nm.CollectServices, v)
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}
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}
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nm = ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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})
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wantCollect(false)
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nm = ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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CollectServices: "false",
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})
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wantCollect(false)
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nm = ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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CollectServices: "true",
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})
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wantCollect(true)
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nm = ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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CollectServices: "",
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})
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wantCollect(true)
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})
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t.Run("implicit_domain", func(t *testing.T) {
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ms := newTestMapSession(t, nil)
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var nm *netmap.NetworkMap
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want := func(v string) {
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t.Helper()
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if nm.Domain != v {
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t.Errorf("netmap.Domain = %q; want %q", nm.Domain, v)
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}
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}
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nm = ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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Domain: "foo.com",
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})
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want("foo.com")
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nm = ms.netmapForResponse(&tailcfg.MapResponse{
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Node: new(tailcfg.Node),
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})
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want("foo.com")
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})
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t.Run("implicit_node", func(t *testing.T) {
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someNode := &tailcfg.Node{
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Name: "foo",
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}
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wantNode := &tailcfg.Node{
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Name: "foo",
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ComputedName: "foo",
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ComputedNameWithHost: "foo",
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}
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ms := newTestMapSession(t, nil)
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mapRes := &tailcfg.MapResponse{
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Node: someNode,
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}
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initDisplayNames(mapRes.Node.View(), mapRes)
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nm1 := ms.netmapForResponse(mapRes)
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if nm1.SelfNode == nil {
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t.Fatal("nil Node in 1st netmap")
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}
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if !reflect.DeepEqual(nm1.SelfNode, wantNode) {
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j, _ := json.Marshal(nm1.SelfNode)
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t.Errorf("Node mismatch in 1st netmap; got: %s", j)
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}
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nm2 := ms.netmapForResponse(&tailcfg.MapResponse{})
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if nm2.SelfNode == nil {
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t.Fatal("nil Node in 1st netmap")
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}
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if !reflect.DeepEqual(nm2.SelfNode, wantNode) {
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j, _ := json.Marshal(nm2.SelfNode)
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t.Errorf("Node mismatch in 2nd netmap; got: %s", j)
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}
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})
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}
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func TestDeltaDERPMap(t *testing.T) {
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regions1 := map[int]*tailcfg.DERPRegion{
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1: {
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RegionID: 1,
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Nodes: []*tailcfg.DERPNode{{
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Name: "derp1a",
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RegionID: 1,
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HostName: "derp1a" + tailcfg.DotInvalid,
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IPv4: "169.254.169.254",
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IPv6: "none",
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}},
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},
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}
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// As above, but with a changed IPv4 addr
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regions2 := map[int]*tailcfg.DERPRegion{1: regions1[1].Clone()}
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regions2[1].Nodes[0].IPv4 = "127.0.0.1"
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type step struct {
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got *tailcfg.DERPMap
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want *tailcfg.DERPMap
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}
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tests := []struct {
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name string
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steps []step
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}{
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{
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name: "nothing-to-nothing",
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steps: []step{
|
|
{nil, nil},
|
|
{nil, nil},
|
|
},
|
|
},
|
|
{
|
|
name: "regions-sticky",
|
|
steps: []step{
|
|
{&tailcfg.DERPMap{Regions: regions1}, &tailcfg.DERPMap{Regions: regions1}},
|
|
{&tailcfg.DERPMap{}, &tailcfg.DERPMap{Regions: regions1}},
|
|
},
|
|
},
|
|
{
|
|
name: "regions-change",
|
|
steps: []step{
|
|
{&tailcfg.DERPMap{Regions: regions1}, &tailcfg.DERPMap{Regions: regions1}},
|
|
{&tailcfg.DERPMap{Regions: regions2}, &tailcfg.DERPMap{Regions: regions2}},
|
|
},
|
|
},
|
|
{
|
|
name: "home-params",
|
|
steps: []step{
|
|
// Send a DERP map
|
|
{&tailcfg.DERPMap{Regions: regions1}, &tailcfg.DERPMap{Regions: regions1}},
|
|
// Send home params, want to still have the same regions
|
|
{
|
|
&tailcfg.DERPMap{HomeParams: &tailcfg.DERPHomeParams{
|
|
RegionScore: map[int]float64{1: 0.5},
|
|
}},
|
|
&tailcfg.DERPMap{Regions: regions1, HomeParams: &tailcfg.DERPHomeParams{
|
|
RegionScore: map[int]float64{1: 0.5},
|
|
}},
|
|
},
|
|
},
|
|
},
|
|
{
|
|
name: "home-params-sub-fields",
|
|
steps: []step{
|
|
// Send a DERP map with home params
|
|
{
|
|
&tailcfg.DERPMap{Regions: regions1, HomeParams: &tailcfg.DERPHomeParams{
|
|
RegionScore: map[int]float64{1: 0.5},
|
|
}},
|
|
&tailcfg.DERPMap{Regions: regions1, HomeParams: &tailcfg.DERPHomeParams{
|
|
RegionScore: map[int]float64{1: 0.5},
|
|
}},
|
|
},
|
|
// Sending a struct with a 'HomeParams' field but nil RegionScore doesn't change home params...
|
|
{
|
|
&tailcfg.DERPMap{HomeParams: &tailcfg.DERPHomeParams{RegionScore: nil}},
|
|
&tailcfg.DERPMap{Regions: regions1, HomeParams: &tailcfg.DERPHomeParams{
|
|
RegionScore: map[int]float64{1: 0.5},
|
|
}},
|
|
},
|
|
// ... but sending one with a non-nil and empty RegionScore field zeroes that out.
|
|
{
|
|
&tailcfg.DERPMap{HomeParams: &tailcfg.DERPHomeParams{RegionScore: map[int]float64{}}},
|
|
&tailcfg.DERPMap{Regions: regions1, HomeParams: &tailcfg.DERPHomeParams{
|
|
RegionScore: map[int]float64{},
|
|
}},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
ms := newTestMapSession(t, nil)
|
|
for stepi, s := range tt.steps {
|
|
nm := ms.netmapForResponse(&tailcfg.MapResponse{DERPMap: s.got})
|
|
if !reflect.DeepEqual(nm.DERPMap, s.want) {
|
|
t.Errorf("unexpected result at step index %v; got: %s", stepi, must.Get(json.Marshal(nm.DERPMap)))
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
type countingNetmapUpdater struct {
|
|
full atomic.Int64
|
|
}
|
|
|
|
func (nu *countingNetmapUpdater) UpdateFullNetmap(nm *netmap.NetworkMap) {
|
|
nu.full.Add(1)
|
|
}
|
|
|
|
func BenchmarkMapSessionDelta(b *testing.B) {
|
|
for _, size := range []int{10, 100, 1_000, 10_000} {
|
|
b.Run(fmt.Sprintf("size_%d", size), func(b *testing.B) {
|
|
ctx := context.Background()
|
|
nu := &countingNetmapUpdater{}
|
|
ms := newTestMapSession(b, nu)
|
|
res := &tailcfg.MapResponse{
|
|
Node: &tailcfg.Node{
|
|
ID: 1,
|
|
Name: "foo.bar.ts.net.",
|
|
},
|
|
}
|
|
for i := 0; i < size; i++ {
|
|
res.Peers = append(res.Peers, &tailcfg.Node{
|
|
ID: tailcfg.NodeID(i + 2),
|
|
Name: fmt.Sprintf("peer%d.bar.ts.net.", i),
|
|
DERP: "127.3.3.40:10",
|
|
Addresses: []netip.Prefix{netip.MustParsePrefix("100.100.2.3/32"), netip.MustParsePrefix("fd7a:115c:a1e0::123/128")},
|
|
AllowedIPs: []netip.Prefix{netip.MustParsePrefix("100.100.2.3/32"), netip.MustParsePrefix("fd7a:115c:a1e0::123/128")},
|
|
Endpoints: []string{"192.168.1.2:345", "192.168.1.3:678"},
|
|
Hostinfo: (&tailcfg.Hostinfo{
|
|
OS: "fooOS",
|
|
Hostname: "MyHostname",
|
|
Services: []tailcfg.Service{
|
|
{Proto: "peerapi4", Port: 1234},
|
|
{Proto: "peerapi6", Port: 1234},
|
|
{Proto: "peerapi-dns-proxy", Port: 1},
|
|
},
|
|
}).View(),
|
|
LastSeen: ptr.To(time.Unix(int64(i), 0)),
|
|
})
|
|
}
|
|
ms.HandleNonKeepAliveMapResponse(ctx, res)
|
|
|
|
b.ResetTimer()
|
|
b.ReportAllocs()
|
|
|
|
// Now for the core of the benchmark loop, just toggle
|
|
// a single node's online status.
|
|
for i := 0; i < b.N; i++ {
|
|
if err := ms.HandleNonKeepAliveMapResponse(ctx, &tailcfg.MapResponse{
|
|
OnlineChange: map[tailcfg.NodeID]bool{
|
|
2: i%2 == 0,
|
|
},
|
|
}); err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
}
|