| 1 | package integrationtest |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/binary" |
| 6 | "fmt" |
| 7 | "math" |
| 8 | "math/rand" |
| 9 | "net" |
| 10 | "testing" |
| 11 | "time" |
| 12 | |
| 13 | "github.com/ipfs/go-cid" |
| 14 | "github.com/ipfs/kubo/core" |
| 15 | mock "github.com/ipfs/kubo/core/mock" |
| 16 | libp2p2 "github.com/ipfs/kubo/core/node/libp2p" |
| 17 | |
| 18 | testutil "github.com/libp2p/go-libp2p-testing/net" |
| 19 | corenet "github.com/libp2p/go-libp2p/core/network" |
| 20 | mocknet "github.com/libp2p/go-libp2p/p2p/net/mock" |
| 21 | |
| 22 | ma "github.com/multiformats/go-multiaddr" |
| 23 | ) |
| 24 | |
| 25 | func TestDHTConnectivityFast(t *testing.T) { |
| 26 | conf := testutil.LatencyConfig{ |
| 27 | NetworkLatency: 0, |
| 28 | RoutingLatency: 0, |
| 29 | BlockstoreLatency: 0, |
| 30 | } |
| 31 | if err := RunDHTConnectivity(conf, 5); err != nil { |
| 32 | t.Fatal(err) |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | func TestDHTConnectivitySlowNetwork(t *testing.T) { |
| 37 | SkipUnlessEpic(t) |
| 38 | conf := testutil.LatencyConfig{NetworkLatency: 400 * time.Millisecond} |
| 39 | if err := RunDHTConnectivity(conf, 5); err != nil { |
| 40 | t.Fatal(err) |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | func TestDHTConnectivitySlowRouting(t *testing.T) { |
| 45 | SkipUnlessEpic(t) |
| 46 | conf := testutil.LatencyConfig{RoutingLatency: 400 * time.Millisecond} |
| 47 | if err := RunDHTConnectivity(conf, 5); err != nil { |
| 48 | t.Fatal(err) |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | // wan prefix must have a real corresponding ASN for the peer diversity filter to work. |
| 53 | var ( |
| 54 | wanPrefix = net.ParseIP("2001:218:3004::") |
| 55 | lanPrefix = net.ParseIP("fe80::") |
| 56 | ) |
| 57 | |
| 58 | func makeAddr(n uint32, wan bool) ma.Multiaddr { |
| 59 | var ip net.IP |
| 60 | if wan { |
| 61 | ip = append(net.IP{}, wanPrefix...) |
| 62 | } else { |
| 63 | ip = append(net.IP{}, lanPrefix...) |
| 64 | } |
| 65 | |
| 66 | binary.LittleEndian.PutUint32(ip[12:], n) |
| 67 | addr, _ := ma.NewMultiaddr(fmt.Sprintf("/ip6/%s/tcp/4242", ip)) |
| 68 | return addr |
| 69 | } |
| 70 | |
| 71 | func RunDHTConnectivity(conf testutil.LatencyConfig, numPeers int) error { |
| 72 | ctx, cancel := context.WithCancel(context.Background()) |
| 73 | defer cancel() |
| 74 | |
| 75 | // create network |
| 76 | mn := mocknet.New() |
| 77 | mn.SetLinkDefaults(mocknet.LinkOptions{ |
| 78 | Latency: conf.NetworkLatency, |
| 79 | Bandwidth: math.MaxInt32, |
| 80 | }) |
| 81 | |
| 82 | testPeer, err := core.NewNode(ctx, &core.BuildCfg{ |
| 83 | Online: true, |
| 84 | Host: mock.MockHostOption(mn), |
| 85 | }) |
| 86 | if err != nil { |
| 87 | return err |
| 88 | } |
| 89 | defer testPeer.Close() |
| 90 | |
| 91 | wanPeers := []*core.IpfsNode{} |
| 92 | lanPeers := []*core.IpfsNode{} |
| 93 | |
| 94 | connectionContext, connCtxCancel := context.WithTimeout(ctx, 15*time.Second) |
| 95 | defer connCtxCancel() |
| 96 | for i := range numPeers { |
| 97 | wanPeer, err := core.NewNode(ctx, &core.BuildCfg{ |
| 98 | Online: true, |
| 99 | Routing: libp2p2.DHTServerOption, |
| 100 | Host: mock.MockHostOption(mn), |
| 101 | }) |
| 102 | if err != nil { |
| 103 | return err |
| 104 | } |
| 105 | defer wanPeer.Close() |
| 106 | wanAddr := makeAddr(uint32(i), true) |
| 107 | _ = wanPeer.PeerHost.Network().Listen(wanAddr) |
| 108 | for _, p := range wanPeers { |
| 109 | _, _ = mn.LinkPeers(p.Identity, wanPeer.Identity) |
| 110 | _ = wanPeer.PeerHost.Connect(connectionContext, p.Peerstore.PeerInfo(p.Identity)) |
| 111 | } |
| 112 | wanPeers = append(wanPeers, wanPeer) |
| 113 | |
| 114 | lanPeer, err := core.NewNode(ctx, &core.BuildCfg{ |
| 115 | Online: true, |
| 116 | Host: mock.MockHostOption(mn), |
| 117 | }) |
| 118 | if err != nil { |
| 119 | return err |
| 120 | } |
| 121 | defer lanPeer.Close() |
| 122 | lanAddr := makeAddr(uint32(i), false) |
| 123 | _ = lanPeer.PeerHost.Network().Listen(lanAddr) |
| 124 | for _, p := range lanPeers { |
| 125 | _, _ = mn.LinkPeers(p.Identity, lanPeer.Identity) |
| 126 | _ = lanPeer.PeerHost.Connect(connectionContext, p.Peerstore.PeerInfo(p.Identity)) |
| 127 | } |
| 128 | lanPeers = append(lanPeers, lanPeer) |
| 129 | } |
| 130 | connCtxCancel() |
| 131 | |
| 132 | // Add interfaces / addresses to test peer. |
| 133 | wanAddr := makeAddr(0, true) |
| 134 | _ = testPeer.PeerHost.Network().Listen(wanAddr) |
| 135 | lanAddr := makeAddr(0, false) |
| 136 | _ = testPeer.PeerHost.Network().Listen(lanAddr) |
| 137 | // The test peer is connected to one lan peer. |
| 138 | for _, p := range lanPeers { |
| 139 | if _, err := mn.LinkPeers(testPeer.Identity, p.Identity); err != nil { |
| 140 | return err |
| 141 | } |
| 142 | } |
| 143 | err = testPeer.PeerHost.Connect(ctx, lanPeers[0].Peerstore.PeerInfo(lanPeers[0].Identity)) |
| 144 | if err != nil { |
| 145 | return err |
| 146 | } |
| 147 | |
| 148 | startupCtx, startupCancel := context.WithTimeout(ctx, time.Second*60) |
| 149 | StartupWait: |
| 150 | for { |
| 151 | select { |
| 152 | case err := <-testPeer.DHT.LAN.RefreshRoutingTable(): |
| 153 | if err != nil { |
| 154 | fmt.Printf("Error refreshing routing table: %v\n", err) |
| 155 | } |
| 156 | if testPeer.DHT.LAN.RoutingTable() == nil || |
| 157 | testPeer.DHT.LAN.RoutingTable().Size() == 0 || |
| 158 | err != nil { |
| 159 | time.Sleep(100 * time.Millisecond) |
| 160 | continue |
| 161 | } |
| 162 | break StartupWait |
| 163 | case <-startupCtx.Done(): |
| 164 | startupCancel() |
| 165 | return fmt.Errorf("expected faster dht bootstrap") |
| 166 | } |
| 167 | } |
| 168 | startupCancel() |
| 169 | |
| 170 | // choose a lan peer and validate lan DHT is functioning. |
| 171 | i := rand.Intn(len(lanPeers)) |
| 172 | if testPeer.PeerHost.Network().Connectedness(lanPeers[i].Identity) == corenet.Connected { |
| 173 | i = (i + 1) % len(lanPeers) |
| 174 | if testPeer.PeerHost.Network().Connectedness(lanPeers[i].Identity) == corenet.Connected { |
| 175 | _ = testPeer.PeerHost.Network().ClosePeer(lanPeers[i].Identity) |
| 176 | testPeer.PeerHost.Peerstore().ClearAddrs(lanPeers[i].Identity) |
| 177 | } |
| 178 | } |
| 179 | // That peer will provide a new CID, and we'll validate the test node can find it. |
| 180 | provideCid := cid.NewCidV1(cid.Raw, []byte("Lan Provide Record")) |
| 181 | provideCtx, cancel := context.WithTimeout(ctx, time.Second) |
| 182 | defer cancel() |
| 183 | if err := lanPeers[i].DHT.Provide(provideCtx, provideCid, true); err != nil { |
| 184 | return err |
| 185 | } |
| 186 | provChan := testPeer.DHT.FindProvidersAsync(provideCtx, provideCid, 0) |
| 187 | prov, ok := <-provChan |
| 188 | if !ok || prov.ID == "" { |
| 189 | return fmt.Errorf("Expected provider. stream closed early") |
| 190 | } |
| 191 | if prov.ID != lanPeers[i].Identity { |
| 192 | return fmt.Errorf("Unexpected lan peer provided record") |
| 193 | } |
| 194 | |
| 195 | // Now, connect with a wan peer. |
| 196 | for _, p := range wanPeers { |
| 197 | if _, err := mn.LinkPeers(testPeer.Identity, p.Identity); err != nil { |
| 198 | return err |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | err = testPeer.PeerHost.Connect(ctx, wanPeers[0].Peerstore.PeerInfo(wanPeers[0].Identity)) |
| 203 | if err != nil { |
| 204 | return err |
| 205 | } |
| 206 | |
| 207 | startupCtx, startupCancel = context.WithTimeout(ctx, time.Second*60) |
| 208 | WanStartupWait: |
| 209 | for { |
| 210 | select { |
| 211 | case err := <-testPeer.DHT.WAN.RefreshRoutingTable(): |
| 212 | // if err != nil { |
| 213 | // fmt.Printf("Error refreshing routing table: %v\n", err) |
| 214 | // } |
| 215 | if testPeer.DHT.WAN.RoutingTable() == nil || |
| 216 | testPeer.DHT.WAN.RoutingTable().Size() == 0 || |
| 217 | err != nil { |
| 218 | time.Sleep(100 * time.Millisecond) |
| 219 | continue |
| 220 | } |
| 221 | break WanStartupWait |
| 222 | case <-startupCtx.Done(): |
| 223 | startupCancel() |
| 224 | return fmt.Errorf("expected faster wan dht bootstrap") |
| 225 | } |
| 226 | } |
| 227 | startupCancel() |
| 228 | |
| 229 | // choose a wan peer and validate wan DHT is functioning. |
| 230 | i = rand.Intn(len(wanPeers)) |
| 231 | if testPeer.PeerHost.Network().Connectedness(wanPeers[i].Identity) == corenet.Connected { |
| 232 | i = (i + 1) % len(wanPeers) |
| 233 | if testPeer.PeerHost.Network().Connectedness(wanPeers[i].Identity) == corenet.Connected { |
| 234 | _ = testPeer.PeerHost.Network().ClosePeer(wanPeers[i].Identity) |
| 235 | testPeer.PeerHost.Peerstore().ClearAddrs(wanPeers[i].Identity) |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | // That peer will provide a new CID, and we'll validate the test node can find it. |
| 240 | wanCid := cid.NewCidV1(cid.Raw, []byte("Wan Provide Record")) |
| 241 | wanProvideCtx, cancel := context.WithTimeout(ctx, time.Second) |
| 242 | defer cancel() |
| 243 | if err := wanPeers[i].DHT.Provide(wanProvideCtx, wanCid, true); err != nil { |
| 244 | return err |
| 245 | } |
| 246 | provChan = testPeer.DHT.FindProvidersAsync(wanProvideCtx, wanCid, 0) |
| 247 | prov, ok = <-provChan |
| 248 | if !ok || prov.ID == "" { |
| 249 | return fmt.Errorf("Expected one provider, closed early") |
| 250 | } |
| 251 | if prov.ID != wanPeers[i].Identity { |
| 252 | return fmt.Errorf("Unexpected lan peer provided record") |
| 253 | } |
| 254 | |
| 255 | // Finally, re-share the lan provided cid from a wan peer and expect a merged result. |
| 256 | i = rand.Intn(len(wanPeers)) |
| 257 | if testPeer.PeerHost.Network().Connectedness(wanPeers[i].Identity) == corenet.Connected { |
| 258 | _ = testPeer.PeerHost.Network().ClosePeer(wanPeers[i].Identity) |
| 259 | testPeer.PeerHost.Peerstore().ClearAddrs(wanPeers[i].Identity) |
| 260 | } |
| 261 | |
| 262 | provideCtx, cancel = context.WithTimeout(ctx, time.Second) |
| 263 | defer cancel() |
| 264 | if err := wanPeers[i].DHT.Provide(provideCtx, provideCid, true); err != nil { |
| 265 | return err |
| 266 | } |
| 267 | provChan = testPeer.DHT.FindProvidersAsync(provideCtx, provideCid, 0) |
| 268 | prov, ok = <-provChan |
| 269 | if !ok { |
| 270 | return fmt.Errorf("Expected two providers, got 0") |
| 271 | } |
| 272 | prov, ok = <-provChan |
| 273 | if !ok { |
| 274 | return fmt.Errorf("Expected two providers, got 1") |
| 275 | } |
| 276 | |
| 277 | return nil |
| 278 | } |