chore: update libp2p to 0.52.1 (#14429)

* update libp2p to 0.52.0

* proto name now must implement `AsRef<str>`

* update libp2p version everywhere

* ToSwarm, FromBehaviour, ToBehaviour

also LocalProtocolsChange and RemoteProtocolsChange

* new NetworkBehaviour invariants

* replace `Vec<u8>` with `StreamProtocol`

* rename ConnectionHandlerEvent::Custom to NotifyBehaviour

* remove DialError & ListenError invariants

also fix pending_events

* use connection_limits::Behaviour

See https://github.com/libp2p/rust-libp2p/pull/3885

* impl `void::Void` for `BehaviourOut`

also use `Behaviour::with_codec`

* KademliaHandler no longer public

* fix StreamProtocol construction

* update libp2p-identify to 0.2.0

* remove non-existing methods from PollParameters

rename ConnectionHandlerUpgrErr to StreamUpgradeError

* `P2p` now contains `PeerId`, not `Multihash`

* use multihash-codetable crate

* update Cargo.lock

* reformat text

* comment out tests for now

* remove `.into()` from P2p

* confirm observed addr manually

See https://github.com/libp2p/rust-libp2p/blob/master/protocols/identify/CHANGELOG.md#0430

* remove SwarmEvent::Banned

since we're not using `ban_peer_id`, this can be safely removed.
we may want to introduce `libp2p::allow_block_list` module in the future.

* fix imports

* replace `libp2p` with smaller deps in network-gossip

* bring back tests

* finish rewriting tests

* uncomment handler tests

* Revert "uncomment handler tests"

This reverts commit 720a06815887f4e10767c62b58864a7ec3a48e50.

* add a fixme

* update Cargo.lock

* remove extra From

* make void uninhabited

* fix discovery test

* use autonat protocols

confirming external addresses manually is unsafe in open networks

* fix SyncNotificationsClogged invariant

* only set server mode manually in tests

doubt that we need to set it on node since we're adding public addresses

* address @dmitry-markin comments

* remove autonat

* removed unused var

* fix EOL

* update smallvec and sha2

in attempt to compile polkadot

* bump k256

in attempt to build cumulus

---------

Co-authored-by: parity-processbot <>

substrate/client/authority-discovery/Cargo.toml

@@ -21,8 +21,8 @@ codec = { package = "parity-scale-codec", version = "3.6.1", default-features =
 futures = "0.3.21"
 futures-timer = "3.0.1"
 ip_network = "0.4.1"
-libp2p = { version = "0.51.3", features = ["kad", "ed25519"] }
-multihash = { version = "0.17.0", default-features = false, features = ["std", "sha2"] }
+libp2p = { version = "0.52.1", features = ["kad", "ed25519"] }
+multihash-codetable = { version = "0.1.0", features = ["sha2", "digest"] }
 log = "0.4.17"
 prost = "0.11"
 rand = "0.8.5"

substrate/client/authority-discovery/src/tests.rs

@@ -56,7 +56,7 @@ fn get_addresses_and_authority_id() {
 	let remote_addr = "/ip6/2001:db8:0:0:0:0:0:2/tcp/30333"
 		.parse::<Multiaddr>()
 		.unwrap()
-		.with(Protocol::P2p(remote_peer_id.into()));
+		.with(Protocol::P2p(remote_peer_id));
 
 	let test_api = Arc::new(TestApi { authorities: vec![] });
 

substrate/client/authority-discovery/src/worker.rs

@@ -34,8 +34,8 @@ use futures::{channel::mpsc, future, stream::Fuse, FutureExt, Stream, StreamExt}
 use addr_cache::AddrCache;
 use codec::{Decode, Encode};
 use ip_network::IpNetwork;
-use libp2p::{core::multiaddr, identity::PublicKey, multihash::Multihash, Multiaddr, PeerId};
-use multihash::{Code, MultihashDigest};
+use libp2p::{core::multiaddr, identity::PublicKey, Multiaddr};
+use multihash_codetable::{Code, MultihashDigest};
 
 use log::{debug, error, log_enabled};
 use prometheus_endpoint::{register, Counter, CounterVec, Gauge, Opts, U64};
@@ -304,7 +304,7 @@ where
 	}
 
 	fn addresses_to_publish(&self) -> impl Iterator<Item = Multiaddr> {
-		let peer_id: Multihash = self.network.local_peer_id().into();
+		let peer_id = self.network.local_peer_id();
 		let publish_non_global_ips = self.publish_non_global_ips;
 		self.network
 			.external_addresses()
@@ -529,7 +529,7 @@ where
 					.map_err(Error::ParsingMultiaddress)?;
 
 				let get_peer_id = |a: &Multiaddr| match a.iter().last() {
-					Some(multiaddr::Protocol::P2p(key)) => PeerId::from_multihash(key).ok(),
+					Some(multiaddr::Protocol::P2p(peer_id)) => Some(peer_id),
 					_ => None,
 				};
 

substrate/client/authority-discovery/src/worker/addr_cache.rs

@@ -162,8 +162,8 @@ impl AddrCache {
 
 fn peer_id_from_multiaddr(addr: &Multiaddr) -> Option<PeerId> {
 	addr.iter().last().and_then(|protocol| {
-		if let Protocol::P2p(multihash) = protocol {
-			PeerId::from_multihash(multihash).ok()
+		if let Protocol::P2p(peer_id) = protocol {
+			Some(peer_id)
 		} else {
 			None
 		}
@@ -178,7 +178,8 @@ fn addresses_to_peer_ids(addresses: &HashSet<Multiaddr>) -> HashSet<PeerId> {
 mod tests {
 	use super::*;
 
-	use libp2p::multihash::{self, Multihash};
+	use libp2p::multihash::Multihash;
+	use multihash_codetable::Code;
 	use quickcheck::{Arbitrary, Gen, QuickCheck, TestResult};
 
 	use sp_authority_discovery::{AuthorityId, AuthorityPair};
@@ -200,14 +201,13 @@ mod tests {
 	impl Arbitrary for TestMultiaddr {
 		fn arbitrary(g: &mut Gen) -> Self {
 			let seed = (0..32).map(|_| u8::arbitrary(g)).collect::<Vec<_>>();
-			let peer_id = PeerId::from_multihash(
-				Multihash::wrap(multihash::Code::Sha2_256.into(), &seed).unwrap(),
-			)
-			.unwrap();
+			let peer_id =
+				PeerId::from_multihash(Multihash::wrap(Code::Sha2_256.into(), &seed).unwrap())
+					.unwrap();
 			let multiaddr = "/ip6/2001:db8:0:0:0:0:0:2/tcp/30333"
 				.parse::<Multiaddr>()
 				.unwrap()
-				.with(Protocol::P2p(peer_id.into()));
+				.with(Protocol::P2p(peer_id));
 
 			TestMultiaddr(multiaddr)
 		}
@@ -219,18 +219,17 @@ mod tests {
 	impl Arbitrary for TestMultiaddrsSamePeerCombo {
 		fn arbitrary(g: &mut Gen) -> Self {
 			let seed = (0..32).map(|_| u8::arbitrary(g)).collect::<Vec<_>>();
-			let peer_id = PeerId::from_multihash(
-				Multihash::wrap(multihash::Code::Sha2_256.into(), &seed).unwrap(),
-			)
-			.unwrap();
+			let peer_id =
+				PeerId::from_multihash(Multihash::wrap(Code::Sha2_256.into(), &seed).unwrap())
+					.unwrap();
 			let multiaddr1 = "/ip6/2001:db8:0:0:0:0:0:2/tcp/30333"
 				.parse::<Multiaddr>()
 				.unwrap()
-				.with(Protocol::P2p(peer_id.into()));
+				.with(Protocol::P2p(peer_id));
 			let multiaddr2 = "/ip6/2002:db8:0:0:0:0:0:2/tcp/30133"
 				.parse::<Multiaddr>()
 				.unwrap()
-				.with(Protocol::P2p(peer_id.into()));
+				.with(Protocol::P2p(peer_id));
 			TestMultiaddrsSamePeerCombo(multiaddr1, multiaddr2)
 		}
 	}
@@ -367,7 +366,7 @@ mod tests {
 		let mut addr_cache = AddrCache::new();
 
 		let peer_id = PeerId::random();
-		let addr = Multiaddr::empty().with(Protocol::P2p(peer_id.into()));
+		let addr = Multiaddr::empty().with(Protocol::P2p(peer_id));
 
 		let authority_id0 = AuthorityPair::generate().0.public();
 		let authority_id1 = AuthorityPair::generate().0.public();

substrate/client/authority-discovery/src/worker/tests.rs

@@ -415,7 +415,7 @@ fn dont_stop_polling_dht_event_stream_after_bogus_event() {
 		let peer_id = PeerId::random();
 		let address: Multiaddr = "/ip6/2001:db8:0:0:0:0:0:1/tcp/30333".parse().unwrap();
 
-		address.with(multiaddr::Protocol::P2p(peer_id.into()))
+		address.with(multiaddr::Protocol::P2p(peer_id))
 	};
 	let remote_key_store = MemoryKeystore::new();
 	let remote_public_key: AuthorityId = remote_key_store
@@ -526,7 +526,7 @@ impl DhtValueFoundTester {
 		let address: Multiaddr =
 			format!("/ip6/2001:db8:0:0:0:0:0:{:x}/tcp/30333", idx).parse().unwrap();
 
-		address.with(multiaddr::Protocol::P2p(peer_id.into()))
+		address.with(multiaddr::Protocol::P2p(peer_id))
 	}
 
 	fn process_value_found(
@@ -749,7 +749,7 @@ fn lookup_throttling() {
 		let peer_id = PeerId::random();
 		let address: Multiaddr = "/ip6/2001:db8:0:0:0:0:0:1/tcp/30333".parse().unwrap();
 
-		address.with(multiaddr::Protocol::P2p(peer_id.into()))
+		address.with(multiaddr::Protocol::P2p(peer_id))
 	};
 	let remote_key_store = MemoryKeystore::new();
 	let remote_public_keys: Vec<AuthorityId> = (0..20)

substrate/client/cli/Cargo.toml

@@ -18,7 +18,7 @@ chrono = "0.4.10"
 clap = { version = "4.2.5", features = ["derive", "string"] }
 fdlimit = "0.2.1"
 futures = "0.3.21"
-libp2p-identity = { version = "0.1.2", features = ["peerid", "ed25519"]}
+libp2p-identity = { version = "0.2.0", features = ["peerid", "ed25519"]}
 log = "0.4.17"
 names = { version = "0.13.0", default-features = false }
 parity-scale-codec = "3.6.1"

substrate/client/consensus/common/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 async-trait = "0.1.57"
 futures = { version = "0.3.21", features = ["thread-pool"] }
 futures-timer = "3.0.1"
-libp2p-identity = { version = "0.1.2", features = ["peerid", "ed25519"] }
+libp2p-identity = { version = "0.2.0", features = ["peerid", "ed25519"] }
 log = "0.4.17"
 mockall = "0.11.3"
 parking_lot = "0.12.1"

substrate/client/network-gossip/Cargo.toml

@@ -17,7 +17,8 @@ targets = ["x86_64-unknown-linux-gnu"]
 ahash = "0.8.2"
 futures = "0.3.21"
 futures-timer = "3.0.1"
-libp2p = "0.51.3"
+libp2p-identity = { version = "0.2.0", features = ["peerid", "ed25519"]}
+multiaddr = "0.18.0"
 log = "0.4.17"
 schnellru = "0.2.1"
 tracing = "0.1.29"

substrate/client/network-gossip/src/bridge.rs

@@ -28,7 +28,7 @@ use futures::{
 	channel::mpsc::{channel, Receiver, Sender},
 	prelude::*,
 };
-use libp2p::PeerId;
+use libp2p_identity::PeerId;
 use log::trace;
 use prometheus_endpoint::Registry;
 use sp_runtime::traits::Block as BlockT;
@@ -330,12 +330,13 @@ impl<B: BlockT> futures::future::FusedFuture for GossipEngine<B> {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use crate::{multiaddr::Multiaddr, ValidationResult, ValidatorContext};
+	use crate::{ValidationResult, ValidatorContext};
 	use futures::{
 		channel::mpsc::{unbounded, UnboundedSender},
 		executor::{block_on, block_on_stream},
 		future::poll_fn,
 	};
+	use multiaddr::Multiaddr;
 	use quickcheck::{Arbitrary, Gen, QuickCheck};
 	use sc_network::{
 		config::MultiaddrWithPeerId, NetworkBlock, NetworkEventStream, NetworkNotification,

substrate/client/network-gossip/src/lib.rs

@@ -67,7 +67,8 @@ pub use self::{
 	validator::{DiscardAll, MessageIntent, ValidationResult, Validator, ValidatorContext},
 };
 
-use libp2p::{multiaddr, PeerId};
+use libp2p_identity::PeerId;
+use multiaddr::{Multiaddr, Protocol};
 use sc_network::{
 	types::ProtocolName, NetworkBlock, NetworkEventStream, NetworkNotification, NetworkPeers,
 };
@@ -82,8 +83,7 @@ mod validator;
 /// Abstraction over a network.
 pub trait Network<B: BlockT>: NetworkPeers + NetworkEventStream + NetworkNotification {
 	fn add_set_reserved(&self, who: PeerId, protocol: ProtocolName) {
-		let addr =
-			iter::once(multiaddr::Protocol::P2p(who.into())).collect::<multiaddr::Multiaddr>();
+		let addr = Multiaddr::empty().with(Protocol::P2p(who));
 		let result = self.add_peers_to_reserved_set(protocol, iter::once(addr).collect());
 		if let Err(err) = result {
 			log::error!(target: "gossip", "add_set_reserved failed: {}", err);

substrate/client/network-gossip/src/state_machine.rs

@@ -19,7 +19,7 @@
 use crate::{MessageIntent, Network, ValidationResult, Validator, ValidatorContext};
 
 use ahash::AHashSet;
-use libp2p::PeerId;
+use libp2p_identity::PeerId;
 use schnellru::{ByLength, LruMap};
 
 use prometheus_endpoint::{register, Counter, PrometheusError, Registry, U64};
@@ -521,8 +521,8 @@ impl Metrics {
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use crate::multiaddr::Multiaddr;
 	use futures::prelude::*;
+	use multiaddr::Multiaddr;
 	use sc_network::{
 		config::MultiaddrWithPeerId, event::Event, NetworkBlock, NetworkEventStream,
 		NetworkNotification, NetworkPeers, NotificationSenderError,

substrate/client/network-gossip/src/validator.rs

@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
-use libp2p::PeerId;
+use libp2p_identity::PeerId;
 use sc_network_common::role::ObservedRole;
 use sp_runtime::traits::Block as BlockT;
 

substrate/client/network/Cargo.toml

@@ -25,7 +25,8 @@ fnv = "1.0.6"
 futures = "0.3.21"
 futures-timer = "3.0.2"
 ip_network = "0.4.1"
-libp2p = { version = "0.51.3", features = ["dns", "identify", "kad", "macros", "mdns", "noise", "ping", "tcp",  "tokio", "yamux", "websocket", "request-response"] }
+libp2p = { version = "0.52.1", features = ["dns", "identify", "kad", "macros", "mdns", "noise", "ping", "tcp", "tokio", "yamux", "websocket", "request-response"] }
+libp2p-kad = { version = "0.44.2" }
 linked_hash_set = "0.1.3"
 log = "0.4.17"
 mockall = "0.11.3"
@@ -35,9 +36,10 @@ pin-project = "1.0.12"
 rand = "0.8.5"
 serde = { version = "1.0.163", features = ["derive"] }
 serde_json = "1.0.85"
-smallvec = "1.8.0"
+smallvec = "1.11.0"
 thiserror = "1.0"
 unsigned-varint = { version = "0.7.1", features = ["futures", "asynchronous_codec"] }
+void = "1"
 zeroize = "1.4.3"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", version = "0.10.0-dev", path = "../../utils/prometheus" }
 sc-client-api = { version = "4.0.0-dev", path = "../api" }
@@ -52,7 +54,7 @@ wasm-timer = "0.2"
 [dev-dependencies]
 assert_matches = "1.3"
 mockall = "0.11.3"
-multistream-select = "0.12.1"
+multistream-select = "0.13.0"
 rand = "0.8.5"
 tempfile = "3.1.0"
 tokio = { version = "1.22.0", features = ["macros"] }

substrate/client/network/bitswap/Cargo.toml

@@ -19,7 +19,7 @@ prost-build = "0.11"
 async-channel = "1.8.0"
 cid = "0.9.0"
 futures = "0.3.21"
-libp2p-identity = { version = "0.1.2", features = ["peerid"] }
+libp2p-identity = { version = "0.2.0", features = ["peerid"] }
 log = "0.4.17"
 prost = "0.11"
 thiserror = "1.0"

substrate/client/network/common/Cargo.toml

@@ -22,7 +22,7 @@ codec = { package = "parity-scale-codec", version = "3.6.1", features = [
 	"derive",
 ] }
 futures = "0.3.21"
-libp2p-identity = { version = "0.1.2", features = ["peerid"] }
+libp2p-identity = { version = "0.2.0", features = ["peerid"] }
 sc-consensus = { version = "0.10.0-dev", path = "../../consensus/common" }
 sp-consensus = { version = "0.10.0-dev", path = "../../../primitives/consensus/common" }
 sp-consensus-grandpa = { version = "4.0.0-dev", path = "../../../primitives/consensus/grandpa" }

substrate/client/network/light/Cargo.toml

@@ -22,7 +22,7 @@ codec = { package = "parity-scale-codec", version = "3.6.1", features = [
     "derive",
 ] }
 futures = "0.3.21"
-libp2p-identity = { version = "0.1.2", features = ["peerid"] }
+libp2p-identity = { version = "0.2.0", features = ["peerid"] }
 log = "0.4.16"
 prost = "0.11"
 sp-blockchain = { version = "4.0.0-dev", path = "../../../primitives/blockchain" }

substrate/client/network/src/behaviour.rs

@@ -30,8 +30,8 @@ use crate::{
 use bytes::Bytes;
 use futures::channel::oneshot;
 use libp2p::{
-	core::Multiaddr, identify::Info as IdentifyInfo, identity::PublicKey, kad::RecordKey,
-	swarm::NetworkBehaviour, PeerId,
+	connection_limits::ConnectionLimits, core::Multiaddr, identify::Info as IdentifyInfo,
+	identity::PublicKey, kad::RecordKey, swarm::NetworkBehaviour, PeerId,
 };
 
 use sc_network_common::role::{ObservedRole, Roles};
@@ -42,7 +42,7 @@ pub use crate::request_responses::{InboundFailure, OutboundFailure, RequestId, R
 
 /// General behaviour of the network. Combines all protocols together.
 #[derive(NetworkBehaviour)]
-#[behaviour(out_event = "BehaviourOut")]
+#[behaviour(to_swarm = "BehaviourOut")]
 pub struct Behaviour<B: BlockT> {
 	/// All the substrate-specific protocols.
 	substrate: Protocol<B>,
@@ -51,6 +51,8 @@ pub struct Behaviour<B: BlockT> {
 	peer_info: peer_info::PeerInfoBehaviour,
 	/// Discovers nodes of the network.
 	discovery: DiscoveryBehaviour,
+	/// Connection limits.
+	connection_limits: libp2p::connection_limits::Behaviour,
 	/// Generic request-response protocols.
 	request_responses: request_responses::RequestResponsesBehaviour,
 }
@@ -171,11 +173,13 @@ impl<B: BlockT> Behaviour<B> {
 		disco_config: DiscoveryConfig,
 		request_response_protocols: Vec<ProtocolConfig>,
 		peerset: PeersetHandle,
+		connection_limits: ConnectionLimits,
 	) -> Result<Self, request_responses::RegisterError> {
 		Ok(Self {
 			substrate,
 			peer_info: peer_info::PeerInfoBehaviour::new(user_agent, local_public_key),
 			discovery: disco_config.finish(),
+			connection_limits: libp2p::connection_limits::Behaviour::new(connection_limits),
 			request_responses: request_responses::RequestResponsesBehaviour::new(
 				request_response_protocols.into_iter(),
 				peerset,
@@ -247,7 +251,7 @@ impl<B: BlockT> Behaviour<B> {
 	pub fn add_self_reported_address_to_dht(
 		&mut self,
 		peer_id: &PeerId,
-		supported_protocols: &[impl AsRef<[u8]>],
+		supported_protocols: &[impl AsRef<str>],
 		addr: Multiaddr,
 	) {
 		self.discovery.add_self_reported_address(peer_id, supported_protocols, addr);
@@ -351,3 +355,9 @@ impl From<DiscoveryOut> for BehaviourOut {
 		}
 	}
 }
+
+impl From<void::Void> for BehaviourOut {
+	fn from(e: void::Void) -> Self {
+		void::unreachable(e)
+	}
+}

substrate/client/network/src/config.rs

@@ -109,8 +109,7 @@ pub fn parse_str_addr(addr_str: &str) -> Result<(PeerId, Multiaddr), ParseErr> {
 /// Splits a Multiaddress into a Multiaddress and PeerId.
 pub fn parse_addr(mut addr: Multiaddr) -> Result<(PeerId, Multiaddr), ParseErr> {
 	let who = match addr.pop() {
-		Some(multiaddr::Protocol::P2p(key)) =>
-			PeerId::from_multihash(key).map_err(|_| ParseErr::InvalidPeerId)?,
+		Some(multiaddr::Protocol::P2p(peer_id)) => peer_id,
 		_ => return Err(ParseErr::PeerIdMissing),
 	};
 
@@ -143,7 +142,7 @@ pub struct MultiaddrWithPeerId {
 impl MultiaddrWithPeerId {
 	/// Concatenates the multiaddress and peer ID into one multiaddress containing both.
 	pub fn concat(&self) -> Multiaddr {
-		let proto = multiaddr::Protocol::P2p(From::from(self.peer_id));
+		let proto = multiaddr::Protocol::P2p(self.peer_id);
 		self.multiaddr.clone().with(proto)
 	}
 }
@@ -181,8 +180,6 @@ impl TryFrom<String> for MultiaddrWithPeerId {
 pub enum ParseErr {
 	/// Error while parsing the multiaddress.
 	MultiaddrParse(multiaddr::Error),
-	/// Multihash of the peer ID is invalid.
-	InvalidPeerId,
 	/// The peer ID is missing from the address.
 	PeerIdMissing,
 }
@@ -191,7 +188,6 @@ impl fmt::Display for ParseErr {
 	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
 		match self {
 			Self::MultiaddrParse(err) => write!(f, "{}", err),
-			Self::InvalidPeerId => write!(f, "Peer id at the end of the address is invalid"),
 			Self::PeerIdMissing => write!(f, "Peer id is missing from the address"),
 		}
 	}
@@ -201,7 +197,6 @@ impl std::error::Error for ParseErr {
 	fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
 		match self {
 			Self::MultiaddrParse(err) => Some(err),
-			Self::InvalidPeerId => None,
 			Self::PeerIdMissing => None,
 		}
 	}

substrate/client/network/src/discovery.rs

@@ -55,7 +55,6 @@ use ip_network::IpNetwork;
 use libp2p::{
 	core::{Endpoint, Multiaddr},
 	kad::{
-		handler::KademliaHandler,
 		record::store::{MemoryStore, RecordStore},
 		GetClosestPeersError, GetRecordOk, Kademlia, KademliaBucketInserts, KademliaConfig,
 		KademliaEvent, QueryId, QueryResult, Quorum, Record, RecordKey,
@@ -65,10 +64,10 @@ use libp2p::{
 	swarm::{
 		behaviour::{
 			toggle::{Toggle, ToggleConnectionHandler},
-			DialFailure, FromSwarm, NewExternalAddr,
+			DialFailure, ExternalAddrConfirmed, FromSwarm,
 		},
-		ConnectionDenied, ConnectionId, DialError, NetworkBehaviour, PollParameters, THandler,
-		THandlerInEvent, THandlerOutEvent, ToSwarm,
+		ConnectionDenied, ConnectionId, DialError, NetworkBehaviour, PollParameters,
+		StreamProtocol, THandler, THandlerInEvent, THandlerOutEvent, ToSwarm,
 	},
 	PeerId,
 };
@@ -104,7 +103,7 @@ pub struct DiscoveryConfig {
 	discovery_only_if_under_num: u64,
 	enable_mdns: bool,
 	kademlia_disjoint_query_paths: bool,
-	kademlia_protocols: Vec<Vec<u8>>,
+	kademlia_protocols: Vec<StreamProtocol>,
 	kademlia_replication_factor: NonZeroUsize,
 }
 
@@ -353,7 +352,7 @@ impl DiscoveryBehaviour {
 	pub fn add_self_reported_address(
 		&mut self,
 		peer_id: &PeerId,
-		supported_protocols: &[impl AsRef<[u8]>],
+		supported_protocols: &[impl AsRef<str>],
 		addr: Multiaddr,
 	) {
 		if let Some(kademlia) = self.kademlia.as_mut() {
@@ -372,7 +371,7 @@ impl DiscoveryBehaviour {
 				trace!(
 					target: "sub-libp2p",
 					"Adding self-reported address {} from {} to Kademlia DHT {}.",
-					addr, peer_id, String::from_utf8_lossy(matching_protocol.as_ref()),
+					addr, peer_id, matching_protocol.as_ref(),
 				);
 				kademlia.add_address(peer_id, addr.clone());
 			} else {
@@ -498,8 +497,9 @@ pub enum DiscoveryOut {
 }
 
 impl NetworkBehaviour for DiscoveryBehaviour {
-	type ConnectionHandler = ToggleConnectionHandler<KademliaHandler<QueryId>>;
-	type OutEvent = DiscoveryOut;
+	type ConnectionHandler =
+		ToggleConnectionHandler<<Kademlia<MemoryStore> as NetworkBehaviour>::ConnectionHandler>;
+	type ToSwarm = DiscoveryOut;
 
 	fn handle_established_inbound_connection(
 		&mut self,
@@ -629,11 +629,11 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 			FromSwarm::ListenerError(e) => {
 				self.kademlia.on_swarm_event(FromSwarm::ListenerError(e));
 			},
-			FromSwarm::ExpiredExternalAddr(e) => {
+			FromSwarm::ExternalAddrExpired(e) => {
 				// We intentionally don't remove the element from `known_external_addresses` in
 				// order to not print the log line again.
 
-				self.kademlia.on_swarm_event(FromSwarm::ExpiredExternalAddr(e));
+				self.kademlia.on_swarm_event(FromSwarm::ExternalAddrExpired(e));
 			},
 			FromSwarm::NewListener(e) => {
 				self.kademlia.on_swarm_event(FromSwarm::NewListener(e));
@@ -641,8 +641,21 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 			FromSwarm::ExpiredListenAddr(e) => {
 				self.kademlia.on_swarm_event(FromSwarm::ExpiredListenAddr(e));
 			},
-			FromSwarm::NewExternalAddr(e @ NewExternalAddr { addr }) => {
-				let new_addr = addr.clone().with(Protocol::P2p(self.local_peer_id.into()));
+			FromSwarm::NewExternalAddrCandidate(e) => {
+				self.kademlia.on_swarm_event(FromSwarm::NewExternalAddrCandidate(e));
+			},
+			FromSwarm::AddressChange(e) => {
+				self.kademlia.on_swarm_event(FromSwarm::AddressChange(e));
+			},
+			FromSwarm::NewListenAddr(e) => {
+				self.kademlia.on_swarm_event(FromSwarm::NewListenAddr(e));
+
+				if let Some(ref mut mdns) = self.mdns {
+					mdns.on_swarm_event(FromSwarm::NewListenAddr(e));
+				}
+			},
+			FromSwarm::ExternalAddrConfirmed(e @ ExternalAddrConfirmed { addr }) => {
+				let new_addr = addr.clone().with(Protocol::P2p(self.local_peer_id));
 
 				if Self::can_add_to_dht(addr) {
 					// NOTE: we might re-discover the same address multiple times
@@ -656,17 +669,7 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 					}
 				}
 
-				self.kademlia.on_swarm_event(FromSwarm::NewExternalAddr(e));
-			},
-			FromSwarm::AddressChange(e) => {
-				self.kademlia.on_swarm_event(FromSwarm::AddressChange(e));
-			},
-			FromSwarm::NewListenAddr(e) => {
-				self.kademlia.on_swarm_event(FromSwarm::NewListenAddr(e));
-
-				if let Some(ref mut mdns) = self.mdns {
-					mdns.on_swarm_event(FromSwarm::NewListenAddr(e));
-				}
+				self.kademlia.on_swarm_event(FromSwarm::ExternalAddrConfirmed(e));
 			},
 		}
 	}
@@ -684,7 +687,7 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 		&mut self,
 		cx: &mut Context,
 		params: &mut impl PollParameters,
-	) -> Poll<ToSwarm<Self::OutEvent, THandlerInEvent<Self>>> {
+	) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
 		// Immediately process the content of `discovered`.
 		if let Some(ev) = self.pending_events.pop_front() {
 			return Poll::Ready(ToSwarm::GenerateEvent(ev))
@@ -895,10 +898,17 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 				ToSwarm::Dial { opts } => return Poll::Ready(ToSwarm::Dial { opts }),
 				ToSwarm::NotifyHandler { peer_id, handler, event } =>
 					return Poll::Ready(ToSwarm::NotifyHandler { peer_id, handler, event }),
-				ToSwarm::ReportObservedAddr { address, score } =>
-					return Poll::Ready(ToSwarm::ReportObservedAddr { address, score }),
 				ToSwarm::CloseConnection { peer_id, connection } =>
 					return Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }),
+				ToSwarm::NewExternalAddrCandidate(observed) =>
+					return Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)),
+				ToSwarm::ExternalAddrConfirmed(addr) =>
+					return Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)),
+				ToSwarm::ExternalAddrExpired(addr) =>
+					return Poll::Ready(ToSwarm::ExternalAddrExpired(addr)),
+				ToSwarm::ListenOn { opts } => return Poll::Ready(ToSwarm::ListenOn { opts }),
+				ToSwarm::RemoveListener { id } =>
+					return Poll::Ready(ToSwarm::RemoveListener { id }),
 			}
 		}
 
@@ -912,8 +922,10 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 								continue
 							}
 
-							self.pending_events
-								.extend(list.map(|(peer_id, _)| DiscoveryOut::Discovered(peer_id)));
+							self.pending_events.extend(
+								list.into_iter()
+									.map(|(peer_id, _)| DiscoveryOut::Discovered(peer_id)),
+							);
 							if let Some(ev) = self.pending_events.pop_front() {
 								return Poll::Ready(ToSwarm::GenerateEvent(ev))
 							}
@@ -926,10 +938,17 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 					ToSwarm::NotifyHandler { event, .. } => match event {}, /* `event` is an */
 					// enum with no
 					// variant
-					ToSwarm::ReportObservedAddr { address, score } =>
-						return Poll::Ready(ToSwarm::ReportObservedAddr { address, score }),
 					ToSwarm::CloseConnection { peer_id, connection } =>
 						return Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }),
+					ToSwarm::NewExternalAddrCandidate(observed) =>
+						return Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)),
+					ToSwarm::ExternalAddrConfirmed(addr) =>
+						return Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)),
+					ToSwarm::ExternalAddrExpired(addr) =>
+						return Poll::Ready(ToSwarm::ExternalAddrExpired(addr)),
+					ToSwarm::ListenOn { opts } => return Poll::Ready(ToSwarm::ListenOn { opts }),
+					ToSwarm::RemoveListener { id } =>
+						return Poll::Ready(ToSwarm::RemoveListener { id }),
 				}
 			}
 		}
@@ -939,21 +958,23 @@ impl NetworkBehaviour for DiscoveryBehaviour {
 }
 
 /// Legacy (fallback) Kademlia protocol name based on `protocol_id`.
-fn legacy_kademlia_protocol_name(id: &ProtocolId) -> Vec<u8> {
-	let mut v = vec![b'/'];
-	v.extend_from_slice(id.as_ref().as_bytes());
-	v.extend_from_slice(b"/kad");
-	v
+fn legacy_kademlia_protocol_name(id: &ProtocolId) -> StreamProtocol {
+	let name = format!("/{}/kad", id.as_ref());
+	StreamProtocol::try_from_owned(name).expect("protocol name is valid. qed")
 }
 
 /// Kademlia protocol name based on `genesis_hash` and `fork_id`.
-fn kademlia_protocol_name<Hash: AsRef<[u8]>>(genesis_hash: Hash, fork_id: Option<&str>) -> Vec<u8> {
+fn kademlia_protocol_name<Hash: AsRef<[u8]>>(
+	genesis_hash: Hash,
+	fork_id: Option<&str>,
+) -> StreamProtocol {
 	let genesis_hash_hex = bytes2hex("", genesis_hash.as_ref());
-	if let Some(fork_id) = fork_id {
-		format!("/{}/{}/kad", genesis_hash_hex, fork_id).as_bytes().into()
+	let name = if let Some(fork_id) = fork_id {
+		format!("/{}/{}/kad", genesis_hash_hex, fork_id)
 	} else {
-		format!("/{}/kad", genesis_hash_hex).as_bytes().into()
-	}
+		format!("/{}/kad", genesis_hash_hex)
+	};
+	StreamProtocol::try_from_owned(name).expect("protocol name is valid. qed")
 }
 
 #[cfg(test)]
@@ -969,7 +990,7 @@ mod tests {
 			upgrade,
 		},
 		identity::Keypair,
-		noise,
+		kad, noise,
 		swarm::{Executor, Swarm, SwarmBuilder, SwarmEvent},
 		yamux, Multiaddr,
 	};
@@ -1023,6 +1044,18 @@ mod tests {
 					TokioExecutor(runtime),
 				)
 				.build();
+
+				// Set the Kademlia mode to server so that it can accept incoming requests.
+				//
+				// Note: the server mode is set automatically when the node learns its external
+				// address, but that does not happen in tests => hence we set it manually.
+				swarm
+					.behaviour_mut()
+					.kademlia
+					.as_mut()
+					.unwrap()
+					.set_mode(Some(kad::Mode::Server));
+
 				let listen_addr: Multiaddr =
 					format!("/memory/{}", rand::random::<u64>()).parse().unwrap();
 
@@ -1083,7 +1116,7 @@ mod tests {
 												.add_self_reported_address(
 													&other,
 													&[protocol_name],
-													addr,
+													addr.clone(),
 												);
 
 											to_discover[swarm_n].remove(&other);

substrate/client/network/src/peer_info.rs

@@ -31,13 +31,13 @@ use libp2p::{
 		Info as IdentifyInfo,
 	},
 	identity::PublicKey,
-	ping::{Behaviour as Ping, Config as PingConfig, Event as PingEvent, Success as PingSuccess},
+	ping::{Behaviour as Ping, Config as PingConfig, Event as PingEvent},
 	swarm::{
 		behaviour::{
 			AddressChange, ConnectionClosed, ConnectionEstablished, DialFailure, FromSwarm,
 			ListenFailure,
 		},
-		ConnectionDenied, ConnectionHandler, ConnectionId, IntoConnectionHandlerSelect,
+		ConnectionDenied, ConnectionHandler, ConnectionHandlerSelect, ConnectionId,
 		NetworkBehaviour, PollParameters, THandler, THandlerInEvent, THandlerOutEvent, ToSwarm,
 	},
 	Multiaddr, PeerId,
@@ -121,13 +121,18 @@ impl PeerInfoBehaviour {
 
 	/// Inserts a ping time in the cache. Has no effect if we don't have any entry for that node,
 	/// which shouldn't happen.
-	fn handle_ping_report(&mut self, peer_id: &PeerId, ping_time: Duration) {
-		trace!(target: "sub-libp2p", "Ping time with {:?}: {:?}", peer_id, ping_time);
+	fn handle_ping_report(
+		&mut self,
+		peer_id: &PeerId,
+		ping_time: Duration,
+		connection: ConnectionId,
+	) {
+		trace!(target: "sub-libp2p", "Ping time with {:?} via {:?}: {:?}", peer_id, connection, ping_time);
 		if let Some(entry) = self.nodes_info.get_mut(peer_id) {
 			entry.latest_ping = Some(ping_time);
 		} else {
 			error!(target: "sub-libp2p",
-				"Received ping from node we're not connected to {:?}", peer_id);
+				"Received ping from node we're not connected to {:?} via {:?}", peer_id, connection);
 		}
 	}
 
@@ -181,11 +186,11 @@ pub enum PeerInfoEvent {
 }
 
 impl NetworkBehaviour for PeerInfoBehaviour {
-	type ConnectionHandler = IntoConnectionHandlerSelect<
+	type ConnectionHandler = ConnectionHandlerSelect<
 		<Ping as NetworkBehaviour>::ConnectionHandler,
 		<Identify as NetworkBehaviour>::ConnectionHandler,
 	>;
-	type OutEvent = PeerInfoEvent;
+	type ToSwarm = PeerInfoEvent;
 
 	fn handle_pending_inbound_connection(
 		&mut self,
@@ -351,9 +356,9 @@ impl NetworkBehaviour for PeerInfoBehaviour {
 				self.ping.on_swarm_event(FromSwarm::ListenerError(e));
 				self.identify.on_swarm_event(FromSwarm::ListenerError(e));
 			},
-			FromSwarm::ExpiredExternalAddr(e) => {
-				self.ping.on_swarm_event(FromSwarm::ExpiredExternalAddr(e));
-				self.identify.on_swarm_event(FromSwarm::ExpiredExternalAddr(e));
+			FromSwarm::ExternalAddrExpired(e) => {
+				self.ping.on_swarm_event(FromSwarm::ExternalAddrExpired(e));
+				self.identify.on_swarm_event(FromSwarm::ExternalAddrExpired(e));
 			},
 			FromSwarm::NewListener(e) => {
 				self.ping.on_swarm_event(FromSwarm::NewListener(e));
@@ -363,9 +368,13 @@ impl NetworkBehaviour for PeerInfoBehaviour {
 				self.ping.on_swarm_event(FromSwarm::ExpiredListenAddr(e));
 				self.identify.on_swarm_event(FromSwarm::ExpiredListenAddr(e));
 			},
-			FromSwarm::NewExternalAddr(e) => {
-				self.ping.on_swarm_event(FromSwarm::NewExternalAddr(e));
-				self.identify.on_swarm_event(FromSwarm::NewExternalAddr(e));
+			FromSwarm::NewExternalAddrCandidate(e) => {
+				self.ping.on_swarm_event(FromSwarm::NewExternalAddrCandidate(e));
+				self.identify.on_swarm_event(FromSwarm::NewExternalAddrCandidate(e));
+			},
+			FromSwarm::ExternalAddrConfirmed(e) => {
+				self.ping.on_swarm_event(FromSwarm::ExternalAddrConfirmed(e));
+				self.identify.on_swarm_event(FromSwarm::ExternalAddrConfirmed(e));
 			},
 			FromSwarm::AddressChange(e @ AddressChange { peer_id, old, new, .. }) => {
 				self.ping.on_swarm_event(FromSwarm::AddressChange(e));
@@ -408,13 +417,13 @@ impl NetworkBehaviour for PeerInfoBehaviour {
 		&mut self,
 		cx: &mut Context,
 		params: &mut impl PollParameters,
-	) -> Poll<ToSwarm<Self::OutEvent, THandlerInEvent<Self>>> {
+	) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
 		loop {
 			match self.ping.poll(cx, params) {
 				Poll::Pending => break,
 				Poll::Ready(ToSwarm::GenerateEvent(ev)) => {
-					if let PingEvent { peer, result: Ok(PingSuccess::Ping { rtt }) } = ev {
-						self.handle_ping_report(&peer, rtt)
+					if let PingEvent { peer, result: Ok(rtt), connection } = ev {
+						self.handle_ping_report(&peer, rtt, connection)
 					}
 				},
 				Poll::Ready(ToSwarm::Dial { opts }) => return Poll::Ready(ToSwarm::Dial { opts }),
@@ -424,10 +433,18 @@ impl NetworkBehaviour for PeerInfoBehaviour {
 						handler,
 						event: Either::Left(event),
 					}),
-				Poll::Ready(ToSwarm::ReportObservedAddr { address, score }) =>
-					return Poll::Ready(ToSwarm::ReportObservedAddr { address, score }),
 				Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }) =>
 					return Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }),
+				Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)) =>
+					return Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)),
+				Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)) =>
+					return Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)),
+				Poll::Ready(ToSwarm::ExternalAddrExpired(addr)) =>
+					return Poll::Ready(ToSwarm::ExternalAddrExpired(addr)),
+				Poll::Ready(ToSwarm::ListenOn { opts }) =>
+					return Poll::Ready(ToSwarm::ListenOn { opts }),
+				Poll::Ready(ToSwarm::RemoveListener { id }) =>
+					return Poll::Ready(ToSwarm::RemoveListener { id }),
 			}
 		}
 
@@ -453,10 +470,18 @@ impl NetworkBehaviour for PeerInfoBehaviour {
 						handler,
 						event: Either::Right(event),
 					}),
-				Poll::Ready(ToSwarm::ReportObservedAddr { address, score }) =>
-					return Poll::Ready(ToSwarm::ReportObservedAddr { address, score }),
 				Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }) =>
 					return Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }),
+				Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)) =>
+					return Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)),
+				Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)) =>
+					return Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)),
+				Poll::Ready(ToSwarm::ExternalAddrExpired(addr)) =>
+					return Poll::Ready(ToSwarm::ExternalAddrExpired(addr)),
+				Poll::Ready(ToSwarm::ListenOn { opts }) =>
+					return Poll::Ready(ToSwarm::ListenOn { opts }),
+				Poll::Ready(ToSwarm::RemoveListener { id }) =>
+					return Poll::Ready(ToSwarm::RemoveListener { id }),
 			}
 		}
 

substrate/client/network/src/protocol.rs

@@ -353,7 +353,7 @@ pub enum CustomMessageOutcome {
 
 impl<B: BlockT> NetworkBehaviour for Protocol<B> {
 	type ConnectionHandler = <Notifications as NetworkBehaviour>::ConnectionHandler;
-	type OutEvent = CustomMessageOutcome;
+	type ToSwarm = CustomMessageOutcome;
 
 	fn handle_established_inbound_connection(
 		&mut self,
@@ -414,7 +414,7 @@ impl<B: BlockT> NetworkBehaviour for Protocol<B> {
 		&mut self,
 		cx: &mut std::task::Context,
 		params: &mut impl PollParameters,
-	) -> Poll<ToSwarm<Self::OutEvent, THandlerInEvent<Self>>> {
+	) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
 		while let Poll::Ready(Some(validation_result)) =
 			self.sync_substream_validations.poll_next_unpin(cx)
 		{
@@ -438,10 +438,18 @@ impl<B: BlockT> NetworkBehaviour for Protocol<B> {
 			Poll::Ready(ToSwarm::Dial { opts }) => return Poll::Ready(ToSwarm::Dial { opts }),
 			Poll::Ready(ToSwarm::NotifyHandler { peer_id, handler, event }) =>
 				return Poll::Ready(ToSwarm::NotifyHandler { peer_id, handler, event }),
-			Poll::Ready(ToSwarm::ReportObservedAddr { address, score }) =>
-				return Poll::Ready(ToSwarm::ReportObservedAddr { address, score }),
 			Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }) =>
 				return Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }),
+			Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)) =>
+				return Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)),
+			Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)) =>
+				return Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)),
+			Poll::Ready(ToSwarm::ExternalAddrExpired(addr)) =>
+				return Poll::Ready(ToSwarm::ExternalAddrExpired(addr)),
+			Poll::Ready(ToSwarm::ListenOn { opts }) =>
+				return Poll::Ready(ToSwarm::ListenOn { opts }),
+			Poll::Ready(ToSwarm::RemoveListener { id }) =>
+				return Poll::Ready(ToSwarm::RemoveListener { id }),
 		};
 
 		let outcome = match event {

substrate/client/network/src/protocol/notifications/behaviour.rs

@@ -999,7 +999,7 @@ impl Notifications {
 
 impl NetworkBehaviour for Notifications {
 	type ConnectionHandler = NotifsHandler;
-	type OutEvent = NotificationsOut;
+	type ToSwarm = NotificationsOut;
 
 	fn handle_pending_inbound_connection(
 		&mut self,
@@ -1468,10 +1468,11 @@ impl NetworkBehaviour for Notifications {
 			FromSwarm::ListenerClosed(_) => {},
 			FromSwarm::ListenFailure(_) => {},
 			FromSwarm::ListenerError(_) => {},
-			FromSwarm::ExpiredExternalAddr(_) => {},
+			FromSwarm::ExternalAddrExpired(_) => {},
 			FromSwarm::NewListener(_) => {},
 			FromSwarm::ExpiredListenAddr(_) => {},
-			FromSwarm::NewExternalAddr(_) => {},
+			FromSwarm::NewExternalAddrCandidate(_) => {},
+			FromSwarm::ExternalAddrConfirmed(_) => {},
 			FromSwarm::AddressChange(_) => {},
 			FromSwarm::NewListenAddr(_) => {},
 		}
@@ -2008,7 +2009,7 @@ impl NetworkBehaviour for Notifications {
 		&mut self,
 		cx: &mut Context,
 		_params: &mut impl PollParameters,
-	) -> Poll<ToSwarm<Self::OutEvent, THandlerInEvent<Self>>> {
+	) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
 		if let Some(event) = self.events.pop_front() {
 			return Poll::Ready(event)
 		}
@@ -2108,7 +2109,6 @@ impl NetworkBehaviour for Notifications {
 mod tests {
 	use super::*;
 	use crate::{peerset::IncomingIndex, protocol::notifications::handler::tests::*};
-	use libp2p::swarm::AddressRecord;
 	use std::{collections::HashSet, iter};
 
 	impl PartialEq for ConnectionState {
@@ -2127,31 +2127,14 @@ mod tests {
 	}
 
 	#[derive(Clone)]
-	struct MockPollParams {
-		peer_id: PeerId,
-		addr: Multiaddr,
-	}
+	struct MockPollParams {}
 
 	impl PollParameters for MockPollParams {
 		type SupportedProtocolsIter = std::vec::IntoIter<Vec<u8>>;
-		type ListenedAddressesIter = std::vec::IntoIter<Multiaddr>;
-		type ExternalAddressesIter = std::vec::IntoIter<AddressRecord>;
 
 		fn supported_protocols(&self) -> Self::SupportedProtocolsIter {
 			vec![].into_iter()
 		}
-
-		fn listened_addresses(&self) -> Self::ListenedAddressesIter {
-			vec![self.addr.clone()].into_iter()
-		}
-
-		fn external_addresses(&self) -> Self::ExternalAddressesIter {
-			vec![].into_iter()
-		}
-
-		fn local_peer_id(&self) -> &PeerId {
-			&self.peer_id
-		}
 	}
 
 	fn development_notifs() -> (Notifications, crate::peerset::PeersetHandle) {
@@ -3015,7 +2998,7 @@ mod tests {
 
 		notif.on_swarm_event(FromSwarm::DialFailure(libp2p::swarm::behaviour::DialFailure {
 			peer_id: Some(peer),
-			error: &libp2p::swarm::DialError::Banned,
+			error: &libp2p::swarm::DialError::Aborted,
 			connection_id: ConnectionId::new_unchecked(1337),
 		}));
 
@@ -3552,7 +3535,7 @@ mod tests {
 		let now = Instant::now();
 		notif.on_swarm_event(FromSwarm::DialFailure(libp2p::swarm::behaviour::DialFailure {
 			peer_id: Some(peer),
-			error: &libp2p::swarm::DialError::Banned,
+			error: &libp2p::swarm::DialError::Aborted,
 			connection_id: ConnectionId::new_unchecked(0),
 		}));
 
@@ -3672,7 +3655,7 @@ mod tests {
 		assert!(notif.peers.get(&(peer, set_id)).is_some());
 
 		if tokio::time::timeout(Duration::from_secs(5), async {
-			let mut params = MockPollParams { peer_id: PeerId::random(), addr: Multiaddr::empty() };
+			let mut params = MockPollParams {};
 
 			loop {
 				futures::future::poll_fn(|cx| {
@@ -3781,7 +3764,7 @@ mod tests {
 		// verify that the code continues to keep the peer disabled by resetting the timer
 		// after the first one expired.
 		if tokio::time::timeout(Duration::from_secs(5), async {
-			let mut params = MockPollParams { peer_id: PeerId::random(), addr: Multiaddr::empty() };
+			let mut params = MockPollParams {};
 
 			loop {
 				futures::future::poll_fn(|cx| {

substrate/client/network/src/protocol/notifications/tests.rs

@@ -151,7 +151,7 @@ impl std::ops::DerefMut for CustomProtoWithAddr {
 
 impl NetworkBehaviour for CustomProtoWithAddr {
 	type ConnectionHandler = <Notifications as NetworkBehaviour>::ConnectionHandler;
-	type OutEvent = <Notifications as NetworkBehaviour>::OutEvent;
+	type ToSwarm = <Notifications as NetworkBehaviour>::ToSwarm;
 
 	fn handle_pending_inbound_connection(
 		&mut self,
@@ -229,7 +229,7 @@ impl NetworkBehaviour for CustomProtoWithAddr {
 		&mut self,
 		cx: &mut Context,
 		params: &mut impl PollParameters,
-	) -> Poll<ToSwarm<Self::OutEvent, THandlerInEvent<Self>>> {
+	) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
 		self.inner.poll(cx, params)
 	}
 }

substrate/client/network/src/protocol/notifications/upgrade/collec.rs

@@ -17,7 +17,7 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 use futures::prelude::*;
-use libp2p::core::upgrade::{InboundUpgrade, ProtocolName, UpgradeInfo};
+use libp2p::core::upgrade::{InboundUpgrade, UpgradeInfo};
 use std::{
 	iter::FromIterator,
 	pin::Pin,
@@ -76,9 +76,9 @@ where
 #[derive(Debug, Clone, PartialEq)]
 pub struct ProtoNameWithUsize<T>(T, usize);
 
-impl<T: ProtocolName> ProtocolName for ProtoNameWithUsize<T> {
-	fn protocol_name(&self) -> &[u8] {
-		self.0.protocol_name()
+impl<T: AsRef<str>> AsRef<str> for ProtoNameWithUsize<T> {
+	fn as_ref(&self) -> &str {
+		self.0.as_ref()
 	}
 }
 
@@ -104,13 +104,13 @@ impl<T: Future<Output = Result<O, E>>, O, E> Future for FutWithUsize<T> {
 mod tests {
 	use super::*;
 	use crate::types::ProtocolName as ProtoName;
-	use libp2p::core::upgrade::{ProtocolName, UpgradeInfo};
+	use libp2p::core::upgrade::UpgradeInfo;
 
 	// TODO: move to mocks
 	mockall::mock! {
 		pub ProtocolUpgrade<T> {}
 
-		impl<T: Clone + ProtocolName> UpgradeInfo for ProtocolUpgrade<T> {
+		impl<T: Clone + AsRef<str>> UpgradeInfo for ProtocolUpgrade<T> {
 			type Info = T;
 			type InfoIter = vec::IntoIter<T>;
 			fn protocol_info(&self) -> vec::IntoIter<T>;

substrate/client/network/src/protocol/notifications/upgrade/notifications.rs

@@ -114,13 +114,6 @@ pub struct NotificationsOutSubstream<TSubstream> {
 	socket: Framed<TSubstream, UviBytes<io::Cursor<Vec<u8>>>>,
 }
 
-#[cfg(test)]
-impl<TSubstream> NotificationsOutSubstream<TSubstream> {
-	pub fn new(socket: Framed<TSubstream, UviBytes<io::Cursor<Vec<u8>>>>) -> Self {
-		Self { socket }
-	}
-}
-
 impl NotificationsIn {
 	/// Builds a new potential upgrade.
 	pub fn new(
@@ -203,13 +196,13 @@ impl<TSubstream> NotificationsInSubstream<TSubstream>
 where
 	TSubstream: AsyncRead + AsyncWrite + Unpin,
 {
-	#[cfg(test)]
-	pub fn new(
-		socket: Framed<TSubstream, UviBytes<io::Cursor<Vec<u8>>>>,
-		handshake: NotificationsInSubstreamHandshake,
-	) -> Self {
-		Self { socket, handshake }
-	}
+	// #[cfg(test)]
+	// pub fn new(
+	// 	socket: Framed<TSubstream, UviBytes<io::Cursor<Vec<u8>>>>,
+	// 	handshake: NotificationsInSubstreamHandshake,
+	// ) -> Self {
+	// 	Self { socket, handshake }
+	// }
 
 	/// Sends the handshake in order to inform the remote that we accept the substream.
 	pub fn send_handshake(&mut self, message: impl Into<Vec<u8>>) {
@@ -498,41 +491,92 @@ pub enum NotificationsOutError {
 
 #[cfg(test)]
 mod tests {
-	use super::{NotificationsIn, NotificationsInOpen, NotificationsOut, NotificationsOutOpen};
-	use futures::{channel::oneshot, prelude::*};
-	use libp2p::core::upgrade;
+	use super::*;
+	use futures::channel::oneshot;
+	use libp2p::core::{upgrade, InboundUpgrade, OutboundUpgrade, UpgradeInfo};
 	use tokio::net::{TcpListener, TcpStream};
 	use tokio_util::compat::TokioAsyncReadCompatExt;
 
+	/// Opens a substream to the given address, negotiates the protocol, and returns the substream
+	/// along with the handshake message.
+	async fn dial(
+		addr: std::net::SocketAddr,
+		handshake: impl Into<Vec<u8>>,
+	) -> Result<
+		(
+			Vec<u8>,
+			NotificationsOutSubstream<
+				multistream_select::Negotiated<tokio_util::compat::Compat<TcpStream>>,
+			>,
+		),
+		NotificationsHandshakeError,
+	> {
+		let socket = TcpStream::connect(addr).await.unwrap();
+		let notifs_out = NotificationsOut::new("/test/proto/1", Vec::new(), handshake, 1024 * 1024);
+		let (_, substream) = multistream_select::dialer_select_proto(
+			socket.compat(),
+			notifs_out.protocol_info().into_iter(),
+			upgrade::Version::V1,
+		)
+		.await
+		.unwrap();
+		let NotificationsOutOpen { handshake, substream, .. } =
+			<NotificationsOut as OutboundUpgrade<_>>::upgrade_outbound(
+				notifs_out,
+				substream,
+				"/test/proto/1".into(),
+			)
+			.await?;
+		Ok((handshake, substream))
+	}
+
+	/// Listens on a localhost, negotiates the protocol, and returns the substream along with the
+	/// handshake message.
+	///
+	/// Also sends the listener address through the given channel.
+	async fn listen_on_localhost(
+		listener_addr_tx: oneshot::Sender<std::net::SocketAddr>,
+	) -> Result<
+		(
+			Vec<u8>,
+			NotificationsInSubstream<
+				multistream_select::Negotiated<tokio_util::compat::Compat<TcpStream>>,
+			>,
+		),
+		NotificationsHandshakeError,
+	> {
+		let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
+		listener_addr_tx.send(listener.local_addr().unwrap()).unwrap();
+
+		let (socket, _) = listener.accept().await.unwrap();
+		let notifs_in = NotificationsIn::new("/test/proto/1", Vec::new(), 1024 * 1024);
+		let (_, substream) =
+			multistream_select::listener_select_proto(socket.compat(), notifs_in.protocol_info())
+				.await
+				.unwrap();
+		let NotificationsInOpen { handshake, substream, .. } =
+			<NotificationsIn as InboundUpgrade<_>>::upgrade_inbound(
+				notifs_in,
+				substream,
+				"/test/proto/1".into(),
+			)
+			.await?;
+		Ok((handshake, substream))
+	}
+
 	#[tokio::test]
 	async fn basic_works() {
-		const PROTO_NAME: &str = "/test/proto/1";
 		let (listener_addr_tx, listener_addr_rx) = oneshot::channel();
 
 		let client = tokio::spawn(async move {
-			let socket = TcpStream::connect(listener_addr_rx.await.unwrap()).await.unwrap();
-			let NotificationsOutOpen { handshake, mut substream, .. } = upgrade::apply_outbound(
-				socket.compat(),
-				NotificationsOut::new(PROTO_NAME, Vec::new(), &b"initial message"[..], 1024 * 1024),
-				upgrade::Version::V1,
-			)
-			.await
-			.unwrap();
+			let (handshake, mut substream) =
+				dial(listener_addr_rx.await.unwrap(), &b"initial message"[..]).await.unwrap();
 
 			assert_eq!(handshake, b"hello world");
 			substream.send(b"test message".to_vec()).await.unwrap();
 		});
 
-		let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
-		listener_addr_tx.send(listener.local_addr().unwrap()).unwrap();
-
-		let (socket, _) = listener.accept().await.unwrap();
-		let NotificationsInOpen { handshake, mut substream, .. } = upgrade::apply_inbound(
-			socket.compat(),
-			NotificationsIn::new(PROTO_NAME, Vec::new(), 1024 * 1024),
-		)
-		.await
-		.unwrap();
+		let (handshake, mut substream) = listen_on_localhost(listener_addr_tx).await.unwrap();
 
 		assert_eq!(handshake, b"initial message");
 		substream.send_handshake(&b"hello world"[..]);
@@ -547,33 +591,17 @@ mod tests {
 	async fn empty_handshake() {
 		// Check that everything still works when the handshake messages are empty.
 
-		const PROTO_NAME: &str = "/test/proto/1";
 		let (listener_addr_tx, listener_addr_rx) = oneshot::channel();
 
 		let client = tokio::spawn(async move {
-			let socket = TcpStream::connect(listener_addr_rx.await.unwrap()).await.unwrap();
-			let NotificationsOutOpen { handshake, mut substream, .. } = upgrade::apply_outbound(
-				socket.compat(),
-				NotificationsOut::new(PROTO_NAME, Vec::new(), vec![], 1024 * 1024),
-				upgrade::Version::V1,
-			)
-			.await
-			.unwrap();
+			let (handshake, mut substream) =
+				dial(listener_addr_rx.await.unwrap(), vec![]).await.unwrap();
 
 			assert!(handshake.is_empty());
 			substream.send(Default::default()).await.unwrap();
 		});
 
-		let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
-		listener_addr_tx.send(listener.local_addr().unwrap()).unwrap();
-
-		let (socket, _) = listener.accept().await.unwrap();
-		let NotificationsInOpen { handshake, mut substream, .. } = upgrade::apply_inbound(
-			socket.compat(),
-			NotificationsIn::new(PROTO_NAME, Vec::new(), 1024 * 1024),
-		)
-		.await
-		.unwrap();
+		let (handshake, mut substream) = listen_on_localhost(listener_addr_tx).await.unwrap();
 
 		assert!(handshake.is_empty());
 		substream.send_handshake(vec![]);
@@ -586,17 +614,10 @@ mod tests {
 
 	#[tokio::test]
 	async fn refused() {
-		const PROTO_NAME: &str = "/test/proto/1";
 		let (listener_addr_tx, listener_addr_rx) = oneshot::channel();
 
 		let client = tokio::spawn(async move {
-			let socket = TcpStream::connect(listener_addr_rx.await.unwrap()).await.unwrap();
-			let outcome = upgrade::apply_outbound(
-				socket.compat(),
-				NotificationsOut::new(PROTO_NAME, Vec::new(), &b"hello"[..], 1024 * 1024),
-				upgrade::Version::V1,
-			)
-			.await;
+			let outcome = dial(listener_addr_rx.await.unwrap(), &b"hello"[..]).await;
 
 			// Despite the protocol negotiation being successfully conducted on the listener
 			// side, we have to receive an error here because the listener didn't send the
@@ -604,16 +625,7 @@ mod tests {
 			assert!(outcome.is_err());
 		});
 
-		let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
-		listener_addr_tx.send(listener.local_addr().unwrap()).unwrap();
-
-		let (socket, _) = listener.accept().await.unwrap();
-		let NotificationsInOpen { handshake, substream, .. } = upgrade::apply_inbound(
-			socket.compat(),
-			NotificationsIn::new(PROTO_NAME, Vec::new(), 1024 * 1024),
-		)
-		.await
-		.unwrap();
+		let (handshake, substream) = listen_on_localhost(listener_addr_tx).await.unwrap();
 
 		assert_eq!(handshake, b"hello");
 
@@ -625,35 +637,16 @@ mod tests {
 
 	#[tokio::test]
 	async fn large_initial_message_refused() {
-		const PROTO_NAME: &str = "/test/proto/1";
 		let (listener_addr_tx, listener_addr_rx) = oneshot::channel();
 
 		let client = tokio::spawn(async move {
-			let socket = TcpStream::connect(listener_addr_rx.await.unwrap()).await.unwrap();
-			let ret = upgrade::apply_outbound(
-				socket.compat(),
-				// We check that an initial message that is too large gets refused.
-				NotificationsOut::new(
-					PROTO_NAME,
-					Vec::new(),
-					(0..32768).map(|_| 0).collect::<Vec<_>>(),
-					1024 * 1024,
-				),
-				upgrade::Version::V1,
-			)
-			.await;
+			let ret =
+				dial(listener_addr_rx.await.unwrap(), (0..32768).map(|_| 0).collect::<Vec<_>>())
+					.await;
 			assert!(ret.is_err());
 		});
 
-		let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
-		listener_addr_tx.send(listener.local_addr().unwrap()).unwrap();
-
-		let (socket, _) = listener.accept().await.unwrap();
-		let ret = upgrade::apply_inbound(
-			socket.compat(),
-			NotificationsIn::new(PROTO_NAME, Vec::new(), 1024 * 1024),
-		)
-		.await;
+		let ret = listen_on_localhost(listener_addr_tx).await;
 		assert!(ret.is_err());
 
 		client.await.unwrap();
@@ -661,30 +654,14 @@ mod tests {
 
 	#[tokio::test]
 	async fn large_handshake_refused() {
-		const PROTO_NAME: &str = "/test/proto/1";
 		let (listener_addr_tx, listener_addr_rx) = oneshot::channel();
 
 		let client = tokio::spawn(async move {
-			let socket = TcpStream::connect(listener_addr_rx.await.unwrap()).await.unwrap();
-			let ret = upgrade::apply_outbound(
-				socket.compat(),
-				NotificationsOut::new(PROTO_NAME, Vec::new(), &b"initial message"[..], 1024 * 1024),
-				upgrade::Version::V1,
-			)
-			.await;
+			let ret = dial(listener_addr_rx.await.unwrap(), &b"initial message"[..]).await;
 			assert!(ret.is_err());
 		});
 
-		let listener = TcpListener::bind("127.0.0.1:0").await.unwrap();
-		listener_addr_tx.send(listener.local_addr().unwrap()).unwrap();
-
-		let (socket, _) = listener.accept().await.unwrap();
-		let NotificationsInOpen { handshake, mut substream, .. } = upgrade::apply_inbound(
-			socket.compat(),
-			NotificationsIn::new(PROTO_NAME, Vec::new(), 1024 * 1024),
-		)
-		.await
-		.unwrap();
+		let (handshake, mut substream) = listen_on_localhost(listener_addr_tx).await.unwrap();
 		assert_eq!(handshake, b"initial message");
 
 		// We check that a handshake that is too large gets refused.

substrate/client/network/src/request_responses.rs

@@ -331,13 +331,13 @@ impl RequestResponsesBehaviour {
 				ProtocolSupport::Outbound
 			};
 
-			let rq_rp = Behaviour::new(
+			let rq_rp = Behaviour::with_codec(
 				GenericCodec {
 					max_request_size: protocol.max_request_size,
 					max_response_size: protocol.max_response_size,
 				},
-				iter::once(protocol.name.as_bytes().to_vec())
-					.chain(protocol.fallback_names.iter().map(|name| name.as_bytes().to_vec()))
+				iter::once(protocol.name.clone())
+					.chain(protocol.fallback_names)
 					.zip(iter::repeat(protocol_support)),
 				cfg,
 			);
@@ -405,7 +405,7 @@ impl RequestResponsesBehaviour {
 impl NetworkBehaviour for RequestResponsesBehaviour {
 	type ConnectionHandler =
 		MultiHandler<String, <Behaviour<GenericCodec> as NetworkBehaviour>::ConnectionHandler>;
-	type OutEvent = Event;
+	type ToSwarm = Event;
 
 	fn handle_pending_inbound_connection(
 		&mut self,
@@ -521,9 +521,9 @@ impl NetworkBehaviour for RequestResponsesBehaviour {
 				for (p, _) in self.protocols.values_mut() {
 					NetworkBehaviour::on_swarm_event(p, FromSwarm::ListenerError(e));
 				},
-			FromSwarm::ExpiredExternalAddr(e) =>
+			FromSwarm::ExternalAddrExpired(e) =>
 				for (p, _) in self.protocols.values_mut() {
-					NetworkBehaviour::on_swarm_event(p, FromSwarm::ExpiredExternalAddr(e));
+					NetworkBehaviour::on_swarm_event(p, FromSwarm::ExternalAddrExpired(e));
 				},
 			FromSwarm::NewListener(e) =>
 				for (p, _) in self.protocols.values_mut() {
@@ -533,9 +533,13 @@ impl NetworkBehaviour for RequestResponsesBehaviour {
 				for (p, _) in self.protocols.values_mut() {
 					NetworkBehaviour::on_swarm_event(p, FromSwarm::ExpiredListenAddr(e));
 				},
-			FromSwarm::NewExternalAddr(e) =>
+			FromSwarm::NewExternalAddrCandidate(e) =>
 				for (p, _) in self.protocols.values_mut() {
-					NetworkBehaviour::on_swarm_event(p, FromSwarm::NewExternalAddr(e));
+					NetworkBehaviour::on_swarm_event(p, FromSwarm::NewExternalAddrCandidate(e));
+				},
+			FromSwarm::ExternalAddrConfirmed(e) =>
+				for (p, _) in self.protocols.values_mut() {
+					NetworkBehaviour::on_swarm_event(p, FromSwarm::ExternalAddrConfirmed(e));
 				},
 			FromSwarm::AddressChange(e) =>
 				for (p, _) in self.protocols.values_mut() {
@@ -570,7 +574,7 @@ impl NetworkBehaviour for RequestResponsesBehaviour {
 		&mut self,
 		cx: &mut Context,
 		params: &mut impl PollParameters,
-	) -> Poll<ToSwarm<Self::OutEvent, THandlerInEvent<Self>>> {
+	) -> Poll<ToSwarm<Self::ToSwarm, THandlerInEvent<Self>>> {
 		'poll_all: loop {
 			if let Some(message_request) = self.message_request.take() {
 				// Now we can can poll `MessageRequest` until we get the reputation
@@ -729,10 +733,18 @@ impl NetworkBehaviour for RequestResponsesBehaviour {
 								handler,
 								event: ((*protocol).to_string(), event),
 							}),
-						ToSwarm::ReportObservedAddr { address, score } =>
-							return Poll::Ready(ToSwarm::ReportObservedAddr { address, score }),
 						ToSwarm::CloseConnection { peer_id, connection } =>
 							return Poll::Ready(ToSwarm::CloseConnection { peer_id, connection }),
+						ToSwarm::NewExternalAddrCandidate(observed) =>
+							return Poll::Ready(ToSwarm::NewExternalAddrCandidate(observed)),
+						ToSwarm::ExternalAddrConfirmed(addr) =>
+							return Poll::Ready(ToSwarm::ExternalAddrConfirmed(addr)),
+						ToSwarm::ExternalAddrExpired(addr) =>
+							return Poll::Ready(ToSwarm::ExternalAddrExpired(addr)),
+						ToSwarm::ListenOn { opts } =>
+							return Poll::Ready(ToSwarm::ListenOn { opts }),
+						ToSwarm::RemoveListener { id } =>
+							return Poll::Ready(ToSwarm::RemoveListener { id }),
 					};
 
 					match ev {
@@ -934,7 +946,7 @@ pub struct GenericCodec {
 
 #[async_trait::async_trait]
 impl Codec for GenericCodec {
-	type Protocol = Vec<u8>;
+	type Protocol = ProtocolName;
 	type Request = Vec<u8>;
 	type Response = Result<Vec<u8>, ()>;
 

substrate/client/network/src/service.rs

@@ -55,17 +55,15 @@ use crate::{
 
 use either::Either;
 use futures::{channel::oneshot, prelude::*};
-#[allow(deprecated)]
 use libp2p::{
-	connection_limits::Exceeded,
+	connection_limits::{ConnectionLimits, Exceeded},
 	core::{upgrade, ConnectedPoint, Endpoint},
 	identify::Info as IdentifyInfo,
 	kad::record::Key as KademliaKey,
 	multiaddr,
-	ping::Failure as PingFailure,
 	swarm::{
-		AddressScore, ConnectionError, ConnectionId, ConnectionLimits, DialError, Executor,
-		ListenError, NetworkBehaviour, Swarm, SwarmBuilder, SwarmEvent, THandlerErr,
+		ConnectionError, ConnectionId, DialError, Executor, ListenError, NetworkBehaviour, Swarm,
+		SwarmBuilder, SwarmEvent, THandlerErr,
 	},
 	Multiaddr, PeerId,
 };
@@ -351,6 +349,11 @@ where
 					discovery_config,
 					request_response_protocols,
 					peerset_handle.clone(),
+					ConnectionLimits::default()
+						.with_max_established_per_peer(Some(crate::MAX_CONNECTIONS_PER_PEER as u32))
+						.with_max_established_incoming(Some(
+							crate::MAX_CONNECTIONS_ESTABLISHED_INCOMING,
+						)),
 				);
 
 				match result {
@@ -374,15 +377,7 @@ where
 					SpawnImpl(params.executor),
 				)
 			};
-			#[allow(deprecated)]
 			let builder = builder
-				.connection_limits(
-					ConnectionLimits::default()
-						.with_max_established_per_peer(Some(crate::MAX_CONNECTIONS_PER_PEER as u32))
-						.with_max_established_incoming(Some(
-							crate::MAX_CONNECTIONS_ESTABLISHED_INCOMING,
-						)),
-				)
 				.substream_upgrade_protocol_override(upgrade::Version::V1Lazy)
 				.notify_handler_buffer_size(NonZeroUsize::new(32).expect("32 != 0; qed"))
 				// NOTE: 24 is somewhat arbitrary and should be tuned in the future if necessary.
@@ -414,11 +409,7 @@ where
 
 		// Add external addresses.
 		for addr in &network_config.public_addresses {
-			Swarm::<Behaviour<B>>::add_external_address(
-				&mut swarm,
-				addr.clone(),
-				AddressScore::Infinite,
-			);
+			Swarm::<Behaviour<B>>::add_external_address(&mut swarm, addr.clone());
 		}
 
 		let external_addresses = Arc::new(Mutex::new(Vec::new()));
@@ -602,7 +593,7 @@ where
 
 		let peer_id = Swarm::<Behaviour<B>>::local_peer_id(swarm).to_base58();
 		let listened_addresses = swarm.listeners().cloned().collect();
-		let external_addresses = swarm.external_addresses().map(|r| &r.addr).cloned().collect();
+		let external_addresses = swarm.external_addresses().cloned().collect();
 
 		NetworkState {
 			peer_id,
@@ -680,8 +671,7 @@ impl<B: BlockT + 'static, H: ExHashT> NetworkService<B, H> {
 			.into_iter()
 			.map(|mut addr| {
 				let peer = match addr.pop() {
-					Some(multiaddr::Protocol::P2p(key)) => PeerId::from_multihash(key)
-						.map_err(|_| "Invalid PeerId format".to_string())?,
+					Some(multiaddr::Protocol::P2p(peer_id)) => peer_id,
 					_ => return Err("Missing PeerId from address".to_string()),
 				};
 
@@ -1197,8 +1187,7 @@ where
 			self.network_service.behaviour_mut().user_protocol_mut().num_connected_peers();
 		self.num_connected.store(num_connected_peers, Ordering::Relaxed);
 		{
-			let external_addresses =
-				self.network_service.external_addresses().map(|r| &r.addr).cloned().collect();
+			let external_addresses = self.network_service.external_addresses().cloned().collect();
 			*self.external_addresses.lock() = external_addresses;
 
 			let listen_addresses =
@@ -1401,7 +1390,12 @@ where
 				peer_id,
 				info:
 					IdentifyInfo {
-						protocol_version, agent_version, mut listen_addrs, protocols, ..
+						protocol_version,
+						agent_version,
+						mut listen_addrs,
+						protocols,
+						observed_addr,
+						..
 					},
 			}) => {
 				if listen_addrs.len() > 30 {
@@ -1413,11 +1407,17 @@ where
 					listen_addrs.truncate(30);
 				}
 				for addr in listen_addrs {
-					self.network_service
-						.behaviour_mut()
-						.add_self_reported_address_to_dht(&peer_id, &protocols, addr);
+					self.network_service.behaviour_mut().add_self_reported_address_to_dht(
+						&peer_id,
+						&protocols,
+						addr.clone(),
+					);
 				}
 				self.network_service.behaviour_mut().user_protocol_mut().add_known_peer(peer_id);
+				// Confirm the observed address manually since they are no longer trusted by
+				// default (libp2p >= 0.52)
+				// TODO: remove this when/if AutoNAT is implemented.
+				self.network_service.add_external_address(observed_addr);
 			},
 			SwarmEvent::Behaviour(BehaviourOut::Discovered(peer_id)) => {
 				self.network_service.behaviour_mut().user_protocol_mut().add_known_peer(peer_id);
@@ -1562,8 +1562,14 @@ where
 					}
 				}
 			},
-			SwarmEvent::ConnectionClosed { peer_id, cause, endpoint, num_established } => {
-				debug!(target: "sub-libp2p", "Libp2p => Disconnected({:?}, {:?})", peer_id, cause);
+			SwarmEvent::ConnectionClosed {
+				connection_id,
+				peer_id,
+				cause,
+				endpoint,
+				num_established,
+			} => {
+				debug!(target: "sub-libp2p", "Libp2p => Disconnected({:?} via {:?}: {:?})", peer_id, connection_id, cause);
 				if let Some(metrics) = self.metrics.as_ref() {
 					let direction = match endpoint {
 						ConnectedPoint::Dialer { .. } => "out",
@@ -1572,10 +1578,12 @@ where
 					let reason = match cause {
 						Some(ConnectionError::IO(_)) => "transport-error",
 						Some(ConnectionError::Handler(Either::Left(Either::Left(
-							Either::Right(Either::Left(PingFailure::Timeout)),
+							Either::Left(Either::Right(_)),
 						)))) => "ping-timeout",
 						Some(ConnectionError::Handler(Either::Left(Either::Left(
-							Either::Left(NotifsHandlerError::SyncNotificationsClogged),
+							Either::Left(Either::Left(
+								NotifsHandlerError::SyncNotificationsClogged,
+							)),
 						)))) => "sync-notifications-clogged",
 						Some(ConnectionError::Handler(_)) => "protocol-error",
 						Some(ConnectionError::KeepAliveTimeout) => "keep-alive-timeout",
@@ -1601,12 +1609,12 @@ where
 					metrics.listeners_local_addresses.dec();
 				}
 			},
-			SwarmEvent::OutgoingConnectionError { peer_id, error } => {
+			SwarmEvent::OutgoingConnectionError { connection_id, peer_id, error } => {
 				if let Some(peer_id) = peer_id {
 					trace!(
 						target: "sub-libp2p",
-						"Libp2p => Failed to reach {:?}: {}",
-						peer_id, error,
+						"Libp2p => Failed to reach {:?} via {:?}: {}",
+						peer_id, connection_id, error,
 					);
 
 					let not_reported = !self.reported_invalid_boot_nodes.contains(&peer_id);
@@ -1644,12 +1652,9 @@ where
 							} else {
 								None
 							},
-						DialError::ConnectionLimit(_) => Some("limit-reached"),
-						DialError::InvalidPeerId(_) |
-						DialError::WrongPeerId { .. } |
-						DialError::LocalPeerId { .. } => Some("invalid-peer-id"),
+						DialError::WrongPeerId { .. } | DialError::LocalPeerId { .. } =>
+							Some("invalid-peer-id"),
 						DialError::Transport(_) => Some("transport-error"),
-						DialError::Banned |
 						DialError::NoAddresses |
 						DialError::DialPeerConditionFalse(_) |
 						DialError::Aborted => None, // ignore them
@@ -1659,21 +1664,26 @@ where
 					}
 				}
 			},
-			SwarmEvent::Dialing(peer_id) => {
-				trace!(target: "sub-libp2p", "Libp2p => Dialing({:?})", peer_id)
+			SwarmEvent::Dialing { peer_id, connection_id } => {
+				trace!(target: "sub-libp2p", "Libp2p => Dialing({:?} via {:?})", peer_id, connection_id)
 			},
-			SwarmEvent::IncomingConnection { local_addr, send_back_addr } => {
-				trace!(target: "sub-libp2p", "Libp2p => IncomingConnection({},{}))",
-					local_addr, send_back_addr);
+			SwarmEvent::IncomingConnection { connection_id, local_addr, send_back_addr } => {
+				trace!(target: "sub-libp2p", "Libp2p => IncomingConnection({},{} via {:?}))",
+					local_addr, send_back_addr, connection_id);
 				if let Some(metrics) = self.metrics.as_ref() {
 					metrics.incoming_connections_total.inc();
 				}
 			},
-			SwarmEvent::IncomingConnectionError { local_addr, send_back_addr, error } => {
+			SwarmEvent::IncomingConnectionError {
+				connection_id,
+				local_addr,
+				send_back_addr,
+				error,
+			} => {
 				debug!(
 					target: "sub-libp2p",
-					"Libp2p => IncomingConnectionError({},{}): {}",
-					local_addr, send_back_addr, error,
+					"Libp2p => IncomingConnectionError({},{} via {:?}): {}",
+					local_addr, send_back_addr, connection_id, error,
 				);
 				if let Some(metrics) = self.metrics.as_ref() {
 					#[allow(deprecated)]
@@ -1684,7 +1694,6 @@ where
 							} else {
 								None
 							},
-						ListenError::ConnectionLimit(_) => Some("limit-reached"),
 						ListenError::WrongPeerId { .. } | ListenError::LocalPeerId { .. } =>
 							Some("invalid-peer-id"),
 						ListenError::Transport(_) => Some("transport-error"),
@@ -1699,17 +1708,6 @@ where
 					}
 				}
 			},
-			#[allow(deprecated)]
-			SwarmEvent::BannedPeer { peer_id, endpoint } => {
-				debug!(
-					target: "sub-libp2p",
-					"Libp2p => BannedPeer({}). Connected via {:?}.",
-					peer_id, endpoint,
-				);
-				if let Some(metrics) = self.metrics.as_ref() {
-					metrics.incoming_connections_errors_total.with_label_values(&["banned"]).inc();
-				}
-			},
 			SwarmEvent::ListenerClosed { reason, addresses, .. } => {
 				if let Some(metrics) = self.metrics.as_ref() {
 					metrics.listeners_local_addresses.sub(addresses.len() as u64);

substrate/client/network/src/types.rs

@@ -18,8 +18,6 @@
 
 //! `sc-network` type definitions
 
-use libp2p::core::upgrade;
-
 use std::{
 	borrow::Borrow,
 	fmt,
@@ -92,9 +90,9 @@ impl fmt::Display for ProtocolName {
 	}
 }
 
-impl upgrade::ProtocolName for ProtocolName {
-	fn protocol_name(&self) -> &[u8] {
-		(self as &str).as_bytes()
+impl AsRef<str> for ProtocolName {
+	fn as_ref(&self) -> &str {
+		self as &str
 	}
 }
 

substrate/client/network/statement/Cargo.toml

@@ -17,7 +17,7 @@ array-bytes = "6.1"
 async-channel = "1.8.0"
 codec = { package = "parity-scale-codec", version = "3.6.1", features = ["derive"] }
 futures = "0.3.21"
-libp2p = "0.51.3"
+libp2p = "0.52.1"
 log = "0.4.17"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", version = "0.10.0-dev", path = "../../../utils/prometheus" }
 sc-network-common = { version = "0.10.0-dev", path = "../common" }

substrate/client/network/statement/src/lib.rs

@@ -286,8 +286,8 @@ where
 	fn handle_sync_event(&mut self, event: SyncEvent) {
 		match event {
 			SyncEvent::PeerConnected(remote) => {
-				let addr = iter::once(multiaddr::Protocol::P2p(remote.into()))
-					.collect::<multiaddr::Multiaddr>();
+				let addr =
+					iter::once(multiaddr::Protocol::P2p(remote)).collect::<multiaddr::Multiaddr>();
 				let result = self.network.add_peers_to_reserved_set(
 					self.protocol_name.clone(),
 					iter::once(addr).collect(),

substrate/client/network/sync/Cargo.toml

@@ -22,12 +22,12 @@ async-trait = "0.1.58"
 codec = { package = "parity-scale-codec", version = "3.6.1", features = ["derive"] }
 futures = "0.3.21"
 futures-timer = "3.0.2"
-libp2p = "0.51.3"
+libp2p = "0.52.1"
 log = "0.4.17"
 mockall = "0.11.3"
 prost = "0.11"
 schnellru = "0.2.1"
-smallvec = "1.8.0"
+smallvec = "1.11.0"
 thiserror = "1.0"
 fork-tree = { version = "3.0.0", path = "../../../utils/fork-tree" }
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", version = "0.10.0-dev", path = "../../../utils/prometheus" }

substrate/client/network/test/Cargo.toml

@@ -17,7 +17,7 @@ tokio = "1.22.0"
 async-trait = "0.1.57"
 futures = "0.3.21"
 futures-timer = "3.0.1"
-libp2p = "0.51.3"
+libp2p = "0.52.1"
 log = "0.4.17"
 parking_lot = "0.12.1"
 rand = "0.8.5"

substrate/client/network/transactions/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 array-bytes = "6.1"
 codec = { package = "parity-scale-codec", version = "3.6.1", features = ["derive"] }
 futures = "0.3.21"
-libp2p = "0.51.3"
+libp2p = "0.52.1"
 log = "0.4.17"
 prometheus-endpoint = { package = "substrate-prometheus-endpoint", version = "0.10.0-dev", path = "../../../utils/prometheus" }
 sc-network = { version = "0.10.0-dev", path = "../" }

substrate/client/network/transactions/src/lib.rs

@@ -327,8 +327,8 @@ where
 	fn handle_sync_event(&mut self, event: SyncEvent) {
 		match event {
 			SyncEvent::PeerConnected(remote) => {
-				let addr = iter::once(multiaddr::Protocol::P2p(remote.into()))
-					.collect::<multiaddr::Multiaddr>();
+				let addr =
+					iter::once(multiaddr::Protocol::P2p(remote)).collect::<multiaddr::Multiaddr>();
 				let result = self.network.add_peers_to_reserved_set(
 					self.protocol_name.clone(),
 					iter::once(addr).collect(),

substrate/client/offchain/Cargo.toml

@@ -21,7 +21,7 @@ futures = "0.3.21"
 futures-timer = "3.0.2"
 hyper = { version = "0.14.16", features = ["stream", "http2"] }
 hyper-rustls = { version = "0.24.0", features = ["http2"] }
-libp2p = "0.51.3"
+libp2p = "0.52.1"
 num_cpus = "1.13"
 once_cell = "1.8"
 parking_lot = "0.12.1"

substrate/client/service/src/lib.rs

@@ -255,7 +255,7 @@ pub async fn build_system_rpc_future<
 				let _ = sender.send(network_service.local_peer_id().to_base58());
 			},
 			sc_rpc::system::Request::LocalListenAddresses(sender) => {
-				let peer_id = (network_service.local_peer_id()).into();
+				let peer_id = network_service.local_peer_id();
 				let p2p_proto_suffix = sc_network::multiaddr::Protocol::P2p(peer_id);
 				let addresses = network_service
 					.listen_addresses()

substrate/client/telemetry/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 chrono = "0.4.19"
 futures = "0.3.21"
-libp2p = { version = "0.51.3", features = ["dns", "tcp", "tokio", "wasm-ext", "websocket"] }
+libp2p = { version = "0.52.1", features = ["dns", "tcp", "tokio", "wasm-ext", "websocket"] }
 log = "0.4.17"
 parking_lot = "0.12.1"
 pin-project = "1.0.12"

substrate/frame/support/Cargo.toml

@@ -35,10 +35,10 @@ paste = "1.0"
 sp-state-machine = { version = "0.28.0", default-features = false, optional = true, path = "../../primitives/state-machine" }
 bitflags = "1.3"
 impl-trait-for-tuples = "0.2.2"
-smallvec = "1.8.0"
+smallvec = "1.11.0"
 log = { version = "0.4.17", default-features = false }
 sp-core-hashing-proc-macro = { version = "9.0.0", path = "../../primitives/core/hashing/proc-macro" }
-k256 = { version = "0.13.0", default-features = false, features = ["ecdsa"] }
+k256 = { version = "0.13.1", default-features = false, features = ["ecdsa"] }
 environmental = { version = "1.1.4", default-features = false }
 sp-genesis-builder = { version = "0.1.0", default-features=false, path = "../../primitives/genesis-builder" }
 serde_json = { version = "1.0.85", default-features = false, features = ["alloc"] }

substrate/primitives/core/hashing/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 blake2b_simd = { version = "1.0.1", default-features = false }
 byteorder = { version = "1.3.2", default-features = false }
 digest = { version = "0.10.3", default-features = false }
-sha2 = { version = "0.10.2", default-features = false }
+sha2 = { version = "0.10.7", default-features = false }
 sha3 = { version = "0.10.0", default-features = false }
 twox-hash = { version = "1.6.3", default-features = false, features = ["digest_0_10"] }
 

substrate/primitives/state-machine/Cargo.toml

@@ -19,7 +19,7 @@ hash-db = { version = "0.16.0", default-features = false }
 log = { version = "0.4.17", default-features = false }
 parking_lot = { version = "0.12.1", optional = true }
 rand = { version = "0.8.5", optional = true }
-smallvec = "1.8.0"
+smallvec = "1.11.0"
 thiserror = { version = "1.0.30", optional = true }
 tracing = { version = "0.1.29", optional = true }
 sp-core = { version = "21.0.0", default-features = false, path = "../core" }

substrate/primitives/statement-store/Cargo.toml

@@ -30,7 +30,7 @@ x25519-dalek = { version = "2.0.0-pre.1", optional = true }
 curve25519-dalek = { version = "3.2", optional = true }
 aes-gcm = { version = "0.10", optional = true }
 hkdf = { version = "0.12.0", optional = true }
-sha2 = { version = "0.10.0", optional = true }
+sha2 = { version = "0.10.7", optional = true }
 rand = { version = "0.8.5", features = ["small_rng"],  optional = true }
 
 [features]

substrate/primitives/weights/Cargo.toml

@@ -16,7 +16,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 codec = { package = "parity-scale-codec", version = "3.6.1", default-features = false, features = ["derive"] }
 scale-info = { version = "2.5.0", default-features = false, features = ["derive"] }
 serde = { version = "1.0.163", default-features = false, optional = true, features = ["derive", "alloc"] }
-smallvec = "1.8.0"
+smallvec = "1.11.0"
 sp-arithmetic = { version = "16.0.0", default-features = false, path = "../arithmetic" }
 sp-core = { version = "21.0.0", default-features = false, path = "../core" }
 sp-debug-derive = { version = "8.0.0", default-features = false, path = "../debug-derive" }