Repository: libp2p/go-libp2p
Pull request #807 (2020-02-27 03:41:35)

Trigger Autorelay on NAT events
Make better use of the event bus between these two.


Patch:
diff --git a/config/config.go b/config/config.go
index fd36db75..b18c294b 100644
--- a/config/config.go
+++ b/config/config.go
@@ -13,11 +13,13 @@ import (
 	"github.com/libp2p/go-libp2p-core/peerstore"
 	"github.com/libp2p/go-libp2p-core/pnet"
 	"github.com/libp2p/go-libp2p-core/routing"
+	"github.com/libp2p/go-libp2p-peerstore/pstoremem"
 
 	bhost "github.com/libp2p/go-libp2p/p2p/host/basic"
 	relay "github.com/libp2p/go-libp2p/p2p/host/relay"
 	routed "github.com/libp2p/go-libp2p/p2p/host/routed"
 
+	autonat "github.com/libp2p/go-libp2p-autonat"
 	circuit "github.com/libp2p/go-libp2p-circuit"
 	discovery "github.com/libp2p/go-libp2p-discovery"
 	swarm "github.com/libp2p/go-libp2p-swarm"
@@ -39,6 +41,8 @@ type NATManagerC func(network.Network) bhost.NATManager
 
 type RoutingC func(host.Host) (routing.PeerRouting, error)
 
+// AutoNATMode defines the AutoNAT behavior for the libp2p host.
+
 // Config describes a set of settings for a libp2p node
 //
 // This is *not* a stable interface. Use the options defined in the root
@@ -76,13 +80,12 @@ type Config struct {
 	Routing RoutingC
 
 	EnableAutoRelay bool
+	Reachability    network.Reachability
+	AutoNATService  bool
 	StaticRelays    []peer.AddrInfo
 }
 
-// NewNode constructs a new libp2p Host from the Config.
-//
-// This function consumes the config. Do not reuse it (really!).
-func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
+func (cfg *Config) newHost(ctx context.Context, store peerstore.Peerstore) (*bhost.BasicHost, error) {
 	// Check this early. Prevents us from even *starting* without verifying this.
 	if pnet.ForcePrivateNetwork && len(cfg.PSK) == 0 {
 		log.Error("tried to create a libp2p node with no Private" +
@@ -103,19 +106,15 @@ func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
 		return nil, err
 	}
 
-	if cfg.Peerstore == nil {
-		return nil, fmt.Errorf("no peerstore specified")
-	}
-
-	if err := cfg.Peerstore.AddPrivKey(pid, cfg.PeerKey); err != nil {
+	if err := store.AddPrivKey(pid, cfg.PeerKey); err != nil {
 		return nil, err
 	}
-	if err := cfg.Peerstore.AddPubKey(pid, cfg.PeerKey.GetPublic()); err != nil {
+	if err := store.AddPubKey(pid, cfg.PeerKey.GetPublic()); err != nil {
 		return nil, err
 	}
 
 	// TODO: Make the swarm implementation configurable.
-	swrm := swarm.NewSwarm(ctx, pid, cfg.Peerstore, cfg.Reporter)
+	swrm := swarm.NewSwarm(ctx, pid, store, cfg.Reporter)
 	if cfg.Filters != nil {
 		swrm.Filters = cfg.Filters
 	}
@@ -183,6 +182,21 @@ func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
 			return nil, err
 		}
 	}
+	return h, nil
+}
+
+// NewNode constructs a new libp2p Host from the Config.
+//
+// This function consumes the config. Do not reuse it (really!).
+func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
+	if cfg.Peerstore == nil {
+		return nil, fmt.Errorf("no peerstore specified")
+	}
+
+	h, err := cfg.newHost(ctx, cfg.Peerstore)
+	if err != nil {
+		return nil, err
+	}
 
 	// TODO: This method succeeds if listening on one address succeeds. We
 	// should probably fail if listening on *any* addr fails.
@@ -201,6 +215,9 @@ func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
 		}
 	}
 
+	// Note: h.AddrsFactory may be changed by AutoRelay, but non-relay version is
+	// used by AutoNAT below.
+	addrF := h.AddrsFactory
 	if cfg.EnableAutoRelay {
 		if !cfg.Relay {
 			h.Close()
@@ -216,7 +233,7 @@ func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
 		}
 
 		if !hop && len(cfg.StaticRelays) > 0 {
-			_ = relay.NewAutoRelay(swrm.Context(), h, nil, router, cfg.StaticRelays)
+			_ = relay.NewAutoRelay(ctx, h, nil, router, cfg.StaticRelays)
 		} else {
 			if router == nil {
 				h.Close()
@@ -235,11 +252,33 @@ func (cfg *Config) NewNode(ctx context.Context) (host.Host, error) {
 				// advertise ourselves
 				relay.Advertise(ctx, discovery)
 			} else {
-				_ = relay.NewAutoRelay(swrm.Context(), h, discovery, router, cfg.StaticRelays)
+				_ = relay.NewAutoRelay(ctx, h, discovery, router, cfg.StaticRelays)
 			}
 		}
 	}
 
+	autonatOpts := []autonat.Option{autonat.UsingAddresses(func() []ma.Multiaddr {
+		return addrF(h.AllAddrs())
+	})}
+	if cfg.AutoNATService {
+		dialerStore := pstoremem.NewPeerstore()
+		dialerHost, err := cfg.newHost(ctx, dialerStore)
+		if err != nil {
+			h.Close()
+			return nil, err
+		}
+
+		autonatOpts = append(autonatOpts, autonat.EnableService(dialerHost.Network()))
+	}
+	if cfg.Reachability != network.ReachabilityUnknown {
+		autonatOpts = append(autonatOpts, autonat.WithReachability(cfg.Reachability))
+	}
+
+	if _, err = autonat.New(ctx, h, autonatOpts...); err != nil {
+		h.Close()
+		return nil, fmt.Errorf("cannot enable autorelay; autonat failed to start: %v", err)
+	}
+
 	// start the host background tasks
 	h.Start()
 
diff --git a/go.mod b/go.mod
index 2bdfa7c3..fbf5766b 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/jbenet/goprocess v0.1.3
 	github.com/libp2p/go-conn-security-multistream v0.1.0
 	github.com/libp2p/go-eventbus v0.1.0
-	github.com/libp2p/go-libp2p-autonat v0.1.1
+	github.com/libp2p/go-libp2p-autonat v0.2.0
 	github.com/libp2p/go-libp2p-blankhost v0.1.4
 	github.com/libp2p/go-libp2p-circuit v0.1.4
 	github.com/libp2p/go-libp2p-core v0.5.0
@@ -29,15 +29,12 @@ require (
 	github.com/libp2p/go-stream-muxer-multistream v0.2.0
 	github.com/libp2p/go-tcp-transport v0.1.1
 	github.com/libp2p/go-ws-transport v0.2.0
-	github.com/miekg/dns v1.1.12 // indirect
+	github.com/miekg/dns v1.1.28 // indirect
 	github.com/multiformats/go-multiaddr v0.2.1
 	github.com/multiformats/go-multiaddr-dns v0.2.0
 	github.com/multiformats/go-multiaddr-net v0.1.3
 	github.com/multiformats/go-multistream v0.1.1
 	github.com/whyrusleeping/mdns v0.0.0-20190826153040-b9b60ed33aa9
-	golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d // indirect
-	golang.org/x/sync v0.0.0-20190423024810-112230192c58 // indirect
-	golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae // indirect
 )
 
 go 1.12
diff --git a/go.sum b/go.sum
index 00f276a2..8c4f4d41 100644
--- a/go.sum
+++ b/go.sum
@@ -6,9 +6,7 @@ github.com/Kubuxu/go-os-helper v0.0.1/go.mod h1:N8B+I7vPCT80IcP58r50u4+gEEcsZETF
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/btcsuite/btcd v0.0.0-20190213025234-306aecffea32/go.mod h1:DrZx5ec/dmnfpw9KyYoQyYo7d0KEvTkk/5M/vbZjAr8=
-github.com/btcsuite/btcd v0.0.0-20190523000118-16327141da8c h1:aEbSeNALREWXk0G7UdNhR3ayBV7tZ4M2PNmnrCAph6Q=
 github.com/btcsuite/btcd v0.0.0-20190523000118-16327141da8c/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
-github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3 h1:A/EVblehb75cUgXA5njHPn0kLAsykn6mJGz7rnmW5W0=
 github.com/btcsuite/btcd v0.0.0-20190824003749-130ea5bddde3/go.mod h1:3J08xEfcugPacsc34/LKRU2yO7YmuT8yt28J8k2+rrI=
 github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
@@ -29,7 +27,6 @@ github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davidlazar/go-crypto v0.0.0-20170701192655-dcfb0a7ac018 h1:6xT9KW8zLC5IlbaIF5Q7JNieBoACT7iW0YTxQHR0in0=
 github.com/davidlazar/go-crypto v0.0.0-20170701192655-dcfb0a7ac018/go.mod h1:rQYf4tfk5sSwFsnDg3qYaBxSjsD9S8+59vW0dKUgme4=
@@ -39,27 +36,20 @@ github.com/dgraph-io/badger v1.6.0/go.mod h1:zwt7syl517jmP8s94KqSxTlM6IMsdhYy6ps
 github.com/dgryski/go-farm v0.0.0-20190104051053-3adb47b1fb0f/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
-github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/go-check/check v0.0.0-20180628173108-788fd7840127/go.mod h1:9ES+weclKsC9YodN5RgxqK/VD9HM9JsCSh7rNhMZE98=
-github.com/gogo/protobuf v1.2.1 h1:/s5zKNz0uPFCZ5hddgPdo2TK2TVrUNMn0OOX8/aZMTE=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
-github.com/gogo/protobuf v1.3.0 h1:G8O7TerXerS4F6sx9OV7/nRfJdnXgHZu/S/7F2SN+UE=
 github.com/gogo/protobuf v1.3.0/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
 github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 h1:ZgQEtGgCBiWRM39fZuwSd1LwSqqSW0hOdXCYYDX0R3I=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
-github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
-github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -68,21 +58,17 @@ github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/ad
 github.com/gxed/hashland/keccakpg v0.0.1/go.mod h1:kRzw3HkwxFU1mpmPP8v1WyQzwdGfmKFJ6tItnhQ67kU=
 github.com/gxed/hashland/murmur3 v0.0.1/go.mod h1:KjXop02n4/ckmZSnY2+HKcLud/tcmvhST0bie/0lS48=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
-github.com/hashicorp/golang-lru v0.5.1 h1:0hERBMJE1eitiLkihrMvRVBYAkpHzc/J3QdDN+dAcgU=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+lJfyTc=
 github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
-github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/huin/goupnp v1.0.0 h1:wg75sLpL6DZqwHQN6E1Cfk6mtfzS45z8OV+ic+DtHRo=
 github.com/huin/goupnp v1.0.0/go.mod h1:n9v9KO1tAxYH82qOn+UTIFQDmx5n1Zxd/ClZDMX7Bnc=
 github.com/huin/goutil v0.0.0-20170803182201-1ca381bf3150/go.mod h1:PpLOETDnJ0o3iZrZfqZzyLl6l7F3c6L1oWn7OICBi6o=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/ipfs/go-cid v0.0.1/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
-github.com/ipfs/go-cid v0.0.2 h1:tuuKaZPU1M6HcejsO3AcYWW8sZ8MTvyxfc4uqB4eFE8=
 github.com/ipfs/go-cid v0.0.2/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
-github.com/ipfs/go-cid v0.0.3 h1:UIAh32wymBpStoe83YCzwVQQ5Oy/H0FdxvUS6DJDzms=
 github.com/ipfs/go-cid v0.0.3/go.mod h1:GHWU/WuQdMPmIosc4Yn1bcCT7dSeX4lBafM7iqUPQvM=
 github.com/ipfs/go-cid v0.0.4/go.mod h1:4LLaPOQwmk5z9LBgQnpkivrx8BJjUyGwTXCd5Xfj6+M=
 github.com/ipfs/go-cid v0.0.5 h1:o0Ix8e/ql7Zb5UVUJEUfjsWCIY8t48++9lR8qi6oiJU=
@@ -101,7 +87,6 @@ github.com/ipfs/go-ds-leveldb v0.4.1/go.mod h1:jpbku/YqBSsBc1qgME8BkWS4AxzF2cEu1
 github.com/ipfs/go-ipfs-delay v0.0.0-20181109222059-70721b86a9a8/go.mod h1:8SP1YXK1M1kXuc4KJZINY3TQQ03J2rwBG9QfXmbRPrw=
 github.com/ipfs/go-ipfs-util v0.0.1 h1:Wz9bL2wB2YBJqggkA4dD7oSmqB4cAnpNbGrlHJulv50=
 github.com/ipfs/go-ipfs-util v0.0.1/go.mod h1:spsl5z8KUnrve+73pOhSVZND1SIxPW5RyBCNzQxlJBc=
-github.com/ipfs/go-log v0.0.1 h1:9XTUN/rW64BCG1YhPK9Hoy3q8nr4gOmHHBpgFdfw6Lc=
 github.com/ipfs/go-log v0.0.1/go.mod h1:kL1d2/hzSpI0thNYjiKfjanbVNU+IIGA/WnNESY9leM=
 github.com/ipfs/go-log v1.0.2 h1:s19ZwJxH8rPWzypjcDpqPLIyV7BnbLqvpli3iZoqYK0=
 github.com/ipfs/go-log v1.0.2/go.mod h1:1MNjMxe0u6xvJZgeqbJ8vdo2TKaGwZ1a0Bpza+sr2Sk=
@@ -130,10 +115,8 @@ github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/koron/go-ssdp v0.0.0-20191105050749-2e1c40ed0b5d h1:68u9r4wEvL3gYg2jvAOgROwZ3H+Y3hIDk4tbbmIjcYQ=
 github.com/koron/go-ssdp v0.0.0-20191105050749-2e1c40ed0b5d/go.mod h1:5Ky9EC2xfoUKUor0Hjgi2BJhCSXJfMOFlmyYrVKGQMk=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/libp2p/go-addr-util v0.0.1 h1:TpTQm9cXVRVSKsYbgQ7GKc3KbbHVTnbostgGaDEP+88=
 github.com/libp2p/go-addr-util v0.0.1/go.mod h1:4ac6O7n9rIAKB1dnd+s8IbbMXkt+oBpzX4/+RACcnlQ=
@@ -144,12 +127,16 @@ github.com/libp2p/go-conn-security-multistream v0.1.0 h1:aqGmto+ttL/uJgX0JtQI0tD
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@@ -157,26 +144,20 @@ github.com/libp2p/go-libp2p-circuit v0.1.4 h1:Phzbmrg3BkVzbqd4ZZ149JxCuUWu2wZcXf
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@@ -186,15 +167,12 @@ github.com/libp2p/go-libp2p-netutil v0.1.0 h1:zscYDNVEcGxyUpMd0JReUZTrpMfia8PmLK
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@@ -203,36 +181,30 @@ github.com/libp2p/go-libp2p-swarm v0.2.2 h1:T4hUpgEs2r371PweU3DuH7EOmBIdTBCwWs+F
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@@ -277,7 +246,6 @@ github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrk
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@@ -285,82 +253,59 @@ github.com/multiformats/go-base32 v0.0.3 h1:tw5+NhuwaOjJCC5Pp82QuXbrmLzWg7uxlMFp
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@@ -371,23 +316,17 @@ github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkU
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@@ -397,11 +336,8 @@ github.com/whyrusleeping/multiaddr-filter v0.0.0-20160516205228-e903e4adabd7 h1:
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-go.opencensus.io v0.21.0 h1:mU6zScU4U1YAFPHEHYk+3JC4SY7JxgkqS10ZOSyksNg=
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 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.3 h1:8sGtKOrtQqkN1bp2AtX+misvLIlOmsEsNd+9NIcPEm8=
 go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
@@ -420,9 +356,7 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20190618222545-ea8f1a30c443 h1:IcSOAf4PyMp3U3XbIEj1/xJ2BjNN2jWv7JoyOsMxXUU=
 golang.org/x/crypto v0.0.0-20190618222545-ea8f1a30c443/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 h1:ObdrDkeb4kJdCP557AjRjq69pTHfNouLtWZG7j9rPN8=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d h1:1ZiEyfaQIg3Qh0EoqpwAakHVhecoE5wlSg5GjnafJGw=
 golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@@ -430,6 +364,7 @@ golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -438,14 +373,13 @@ golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20190227160552-c95aed5357e7/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478 h1:l5EDrHhldLYb3ZRHDUhXF7Om7MvYXnkV9/iQNo1lX6g=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 h1:bjcUS9ztw9kFmmIxJInhon/0Is3p+EHBKNgquIzo1OI=
 golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -457,14 +391,12 @@ golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190228124157-a34e9553db1e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e h1:N7DeIrjYszNmSW409R3frPPwglRwMkXSBzwVbkOjLLA=
+golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae h1:/WDfKMnPU+m5M4xB+6x4kaepxRw6jWvR5iDRdvjHgy8=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
@@ -474,10 +406,10 @@ golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20181130052023-1c3d964395ce/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd h1:/e+gpKk9r3dJobndpTytxS2gOy6m5uvpg+ISQoEcusQ=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7 h1:9zdDQZ7Thm29KFXgAX/+yaf3eVbP7djjWp/dXAppNCc=
+golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
@@ -487,19 +419,13 @@ google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRn
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/src-d/go-cli.v0 v0.0.0-20181105080154-d492247bbc0d/go.mod h1:z+K8VcOYVYcSwSjGebuDL6176A1XskgbtNl64NSg+n8=
 gopkg.in/src-d/go-log.v1 v1.0.1/go.mod h1:GN34hKP0g305ysm2/hctJ0Y8nWP3zxXXJ8GFabTyABE=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
diff --git a/options.go b/options.go
index d63afbba..107e38db 100644
--- a/options.go
+++ b/options.go
@@ -10,6 +10,7 @@ import (
 	"github.com/libp2p/go-libp2p-core/connmgr"
 	"github.com/libp2p/go-libp2p-core/crypto"
 	"github.com/libp2p/go-libp2p-core/metrics"
+	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
 	"github.com/libp2p/go-libp2p-core/peerstore"
 	"github.com/libp2p/go-libp2p-core/pnet"
@@ -278,6 +279,29 @@ func DefaultStaticRelays() Option {
 	}
 }
 
+// WithReachability overrides automatic reachability detection to force the local node
+// to believe it is either unreachable or reachable externally.
+func WithReachability(reachable bool) Option {
+	return func(cfg *Config) error {
+		if reachable {
+			cfg.Reachability = network.ReachabilityPublic
+		} else {
+			cfg.Reachability = network.ReachabilityPrivate
+		}
+		return nil
+	}
+}
+
+// EnableNATService configures libp2p to provide a service to peers for determining
+// their reachability status. When enabled, the host will attempt to dial back
+// to peers, and then tell them if it was successful in making such connections.
+func EnableNATService() Option {
+	return func(cfg *Config) error {
+		cfg.AutoNATService = true
+		return nil
+	}
+}
+
 // FilterAddresses configures libp2p to never dial nor accept connections from
 // the given addresses. FilterAddresses should be used for cases where the
 // addresses you want to deny are known ahead of time.
diff --git a/p2p/host/relay/autorelay.go b/p2p/host/relay/autorelay.go
index 484c7dbb..3ef741b0 100644
--- a/p2p/host/relay/autorelay.go
+++ b/p2p/host/relay/autorelay.go
@@ -7,11 +7,11 @@ import (
 	"sync"
 	"time"
 
+	"github.com/libp2p/go-libp2p-core/event"
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
 	"github.com/libp2p/go-libp2p-core/routing"
 
-	autonat "github.com/libp2p/go-libp2p-autonat"
 	circuit "github.com/libp2p/go-libp2p-circuit"
 	discovery "github.com/libp2p/go-libp2p-discovery"
 	basic "github.com/libp2p/go-libp2p/p2p/host/basic"
@@ -42,7 +42,6 @@ type AutoRelay struct {
 	host     *basic.BasicHost
 	discover discovery.Discoverer
 	router   routing.PeerRouting
-	autonat  autonat.AutoNAT
 	addrsF   basic.AddrsFactory
 
 	static []peer.AddrInfo
@@ -51,7 +50,7 @@ type AutoRelay struct {
 
 	mx     sync.Mutex
 	relays map[peer.ID]struct{}
-	status autonat.NATStatus
+	status network.Reachability
 
 	cachedAddrs       []ma.Multiaddr
 	cachedAddrsExpiry time.Time
@@ -66,58 +65,53 @@ func NewAutoRelay(ctx context.Context, bhost *basic.BasicHost, discover discover
 		static:     static,
 		relays:     make(map[peer.ID]struct{}),
 		disconnect: make(chan struct{}, 1),
-		status:     autonat.NATStatusUnknown,
+		status:     network.ReachabilityUnknown,
 	}
-	ar.autonat = autonat.NewAutoNAT(ctx, bhost, ar.baseAddrs)
 	bhost.AddrsFactory = ar.hostAddrs
 	bhost.Network().Notify(ar)
 	go ar.background(ctx)
 	return ar
 }
 
-func (ar *AutoRelay) baseAddrs() []ma.Multiaddr {
-	return ar.addrsF(ar.host.AllAddrs())
-}
-
 func (ar *AutoRelay) hostAddrs(addrs []ma.Multiaddr) []ma.Multiaddr {
 	return ar.relayAddrs(ar.addrsF(addrs))
 }
 
 func (ar *AutoRelay) background(ctx context.Context) {
-	select {
-	case <-time.After(autonat.AutoNATBootDelay + BootDelay):
-	case <-ctx.Done():
-		return
-	}
+	subReachability, _ := ar.host.EventBus().Subscribe(new(event.EvtLocalReachabilityChanged))
+	defer subReachability.Close()
 
 	// when true, we need to identify push
 	push := false
 
 	for {
-		wait := autonat.AutoNATRefreshInterval
-		switch ar.autonat.Status() {
-		case autonat.NATStatusUnknown:
-			ar.mx.Lock()
-			ar.status = autonat.NATStatusUnknown
-			ar.mx.Unlock()
-			wait = autonat.AutoNATRetryInterval
+		select {
+		case ev, ok := <-subReachability.Out():
+			if !ok {
+				return
+			}
+			evt, ok := ev.(event.EvtLocalReachabilityChanged)
+			if !ok {
+				return
+			}
 
-		case autonat.NATStatusPublic:
-			ar.mx.Lock()
-			if ar.status != autonat.NATStatusPublic {
-				push = true
+			var update bool
+			if evt.Reachability == network.ReachabilityPrivate {
+				// TODO: this is a long-lived (2.5min task) that should get spun up in a separate thread
+				// and canceled if the relay learns the nat is now public.
+				update = ar.findRelays(ctx)
 			}
-			ar.status = autonat.NATStatusPublic
-			ar.mx.Unlock()
 
-		case autonat.NATStatusPrivate:
-			update := ar.findRelays(ctx)
 			ar.mx.Lock()
-			if update || ar.status != autonat.NATStatusPrivate {
+			if update || (ar.status != evt.Reachability && evt.Reachability != network.ReachabilityUnknown) {
 				push = true
 			}
-			ar.status = autonat.NATStatusPrivate
+			ar.status = evt.Reachability
 			ar.mx.Unlock()
+		case <-ar.disconnect:
+			push = true
+		case <-ctx.Done():
+			return
 		}
 
 		if push {
@@ -127,14 +121,6 @@ func (ar *AutoRelay) background(ctx context.Context) {
 			push = false
 			ar.host.CheckForAddressChanges()
 		}
-
-		select {
-		case <-ar.disconnect:
-			push = true
-		case <-time.After(wait):
-		case <-ctx.Done():
-			return
-		}
 	}
 }
 
@@ -283,7 +269,7 @@ func (ar *AutoRelay) relayAddrs(addrs []ma.Multiaddr) []ma.Multiaddr {
 	ar.mx.Lock()
 	defer ar.mx.Unlock()
 
-	if ar.status != autonat.NATStatusPrivate {
+	if ar.status != network.ReachabilityPrivate {
 		return addrs
 	}
 


Test patch:
diff --git a/p2p/host/relay/autorelay_test.go b/p2p/host/relay/autorelay_test.go
index 25653d8c..83b91032 100644
--- a/p2p/host/relay/autorelay_test.go
+++ b/p2p/host/relay/autorelay_test.go
@@ -11,11 +11,9 @@ import (
 	libp2p "github.com/libp2p/go-libp2p"
 	relay "github.com/libp2p/go-libp2p/p2p/host/relay"
 
-	ggio "github.com/gogo/protobuf/io"
 	cid "github.com/ipfs/go-cid"
-	autonat "github.com/libp2p/go-libp2p-autonat"
-	autonatpb "github.com/libp2p/go-libp2p-autonat/pb"
 	circuit "github.com/libp2p/go-libp2p-circuit"
+	"github.com/libp2p/go-libp2p-core/event"
 	"github.com/libp2p/go-libp2p-core/host"
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
@@ -26,8 +24,6 @@ import (
 
 // test specific parameters
 func init() {
-	autonat.AutoNATIdentifyDelay = 1 * time.Second
-	autonat.AutoNATBootDelay = 2 * time.Second
 	relay.BootDelay = 1 * time.Second
 	relay.AdvertiseBootDelay = 100 * time.Millisecond
 }
@@ -106,33 +102,6 @@ func (m *mockRouting) FindProvidersAsync(ctx context.Context, cid cid.Cid, limit
 	return ch
 }
 
-// mock autonat
-func makeAutoNATServicePrivate(ctx context.Context, t *testing.T) host.Host {
-	h, err := libp2p.New(ctx)
-	if err != nil {
-		t.Fatal(err)
-	}
-	h.SetStreamHandler(autonat.AutoNATProto, sayAutoNATPrivate)
-	return h
-}
-
-func sayAutoNATPrivate(s network.Stream) {
-	defer s.Close()
-	w := ggio.NewDelimitedWriter(s)
-	res := autonatpb.Message{
-		Type:         autonatpb.Message_DIAL_RESPONSE.Enum(),
-		DialResponse: newDialResponseError(autonatpb.Message_E_DIAL_ERROR, "no dialable addresses"),
-	}
-	w.WriteMsg(&res)
-}
-
-func newDialResponseError(status autonatpb.Message_ResponseStatus, text string) *autonatpb.Message_DialResponse {
-	dr := new(autonatpb.Message_DialResponse)
-	dr.Status = status.Enum()
-	dr.StatusText = &text
-	return dr
-}
-
 // connector
 func connect(t *testing.T, a, b host.Host) {
 	pinfo := peer.AddrInfo{ID: a.ID(), Addrs: a.Addrs()}
@@ -159,8 +128,11 @@ func TestAutoRelay(t *testing.T) {
 		return mr, nil
 	}
 
-	h1 := makeAutoNATServicePrivate(ctx, t)
-	_, err := libp2p.New(ctx, libp2p.EnableRelay(circuit.OptHop), libp2p.EnableAutoRelay(), libp2p.Routing(makeRouting))
+	h1, err := libp2p.New(ctx, libp2p.EnableRelay())
+	if err != nil {
+		t.Fatal(err)
+	}
+	_, err = libp2p.New(ctx, libp2p.EnableRelay(circuit.OptHop), libp2p.EnableAutoRelay(), libp2p.Routing(makeRouting))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -181,9 +153,13 @@ func TestAutoRelay(t *testing.T) {
 		}
 	}
 
-	// connect to AutoNAT and let detection/discovery work its magic
+	// connect to AutoNAT, have it resolve to private.
 	connect(t, h1, h3)
-	time.Sleep(5 * time.Second)
+	time.Sleep(300 * time.Millisecond)
+	privEmitter, _ := h3.EventBus().Emitter(new(event.EvtLocalReachabilityChanged))
+	privEmitter.Emit(event.EvtLocalReachabilityChanged{Reachability: network.ReachabilityPrivate})
+	// Wait for detection to do its magic
+	time.Sleep(3000 * time.Millisecond)
 
 	// verify that we now advertise relay addrs (but not unspecific relay addrs)
 	unspecificRelay, err := ma.NewMultiaddr("/p2p-circuit")