cleanups

beacon_node/lighthouse_network/src/discovery/mod.rs

@@ -383,20 +383,6 @@ impl<TSpec: EthSpec> Discovery<TSpec> {
         self.discv5.table_entries_enr()
     }
 
-    /// Returns the ENR of a known peer if it exists.
-    pub fn enr_of_peer(&mut self, peer_id: &PeerId) -> Option<Enr> {
-        // first search the local cache
-        if let Some(enr) = self.cached_enrs.get(peer_id) {
-            return Some(enr.clone());
-        }
-        // not in the local cache, look in the routing table
-        if let Ok(node_id) = enr_ext::peer_id_to_node_id(peer_id) {
-            self.discv5.find_enr(&node_id)
-        } else {
-            None
-        }
-    }
-
     /// Updates the local ENR TCP port.
     /// There currently isn't a case to update the address here. We opt for discovery to
     /// automatically update the external address.
@@ -733,23 +719,6 @@ impl<TSpec: EthSpec> Discovery<TSpec> {
         target_peers: usize,
         additional_predicate: impl Fn(&Enr) -> bool + Send + 'static,
     ) {
-        // Make sure there are subnet queries included
-        let contains_queries = match &query {
-            QueryType::Subnet(queries) => !queries.is_empty(),
-            QueryType::FindPeers => true,
-        };
-
-        if !contains_queries {
-            debug!(
-                self.log,
-                "No subnets included in this request. Skipping discovery request."
-            );
-            return;
-        }
-
-        // Generate a random target node id.
-        let random_node = NodeId::random();
-
         let enr_fork_id = match self.local_enr().eth2() {
             Ok(v) => v,
             Err(e) => {
@@ -773,7 +742,8 @@ impl<TSpec: EthSpec> Discovery<TSpec> {
         // Build the future
         let query_future = self
             .discv5
-            .find_node_predicate(random_node, predicate, target_peers)
+            // Generate a random target node id.
+            .find_node_predicate(NodeId::random(), predicate, target_peers)
             .map(|v| QueryResult {
                 query_type: query,
                 result: v,
@@ -797,12 +767,14 @@ impl<TSpec: EthSpec> Discovery<TSpec> {
                     }
                     Ok(r) => {
                         debug!(self.log, "Discovery query completed"; "peers_found" => r.len());
-                        let mut results: HashMap<_, Option<Instant>> = HashMap::new();
-                        r.into_iter().for_each(|enr| {
-                            // cache the found ENR's
-                            self.cached_enrs.put(enr.peer_id(), enr.clone());
-                            results.insert(enr, None);
-                        });
+                        let results = r
+                            .into_iter()
+                            .map(|enr| {
+                                // cache the found ENR's
+                                self.cached_enrs.put(enr.peer_id(), enr.clone());
+                                (enr, None)
+                            })
+                            .collect();
                         return Some(results);
                     }
                     Err(e) => {

beacon_node/lighthouse_network/src/peer_manager/mod.rs

@@ -315,8 +315,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
     /// This function decides whether or not to dial these peers.
     #[allow(clippy::mutable_key_type)]
     pub fn peers_discovered(&mut self, results: HashMap<Enr, Option<Instant>>) {
-        let mut to_dial_peers = Vec::with_capacity(4);
-
+        let mut to_dial_peers = 0;
         let connected_or_dialing = self.network_globals.connected_or_dialing_peers();
         for (enr, min_ttl) in results {
             // There are two conditions in deciding whether to dial this peer.
@@ -327,14 +326,8 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
             //    considered a priority. We have pre-allocated some extra priority slots for these
             //    peers as specified by PRIORITY_PEER_EXCESS. Therefore we dial these peers, even
             //    if we are already at our max_peer limit.
-            if (min_ttl.is_some()
-                && connected_or_dialing + to_dial_peers.len() < self.max_priority_peers()
-                || connected_or_dialing + to_dial_peers.len() < self.max_peers())
-                && self
-                    .network_globals
-                    .peers
-                    .read()
-                    .should_dial(&enr.peer_id())
+            if min_ttl.is_some() && connected_or_dialing + to_dial_peers < self.max_priority_peers()
+                || connected_or_dialing + to_dial_peers < self.max_peers()
             {
                 // This should be updated with the peer dialing. In fact created once the peer is
                 // dialed
@@ -345,15 +338,13 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                         .update_min_ttl(&enr.peer_id(), min_ttl);
                 }
                 debug!(self.log, "Dialing discovered peer"; "peer_id" => %enr.peer_id());
-                to_dial_peers.push(enr);
+                self.dial_peer(enr);
+                to_dial_peers += 1;
             }
         }
 
         // Queue another discovery if we need to
-        self.maintain_peer_count(to_dial_peers.len());
-
-        // Dial the required peers
-        self.dial_peers(to_dial_peers);
+        self.maintain_peer_count(to_dial_peers);
     }
 
     /// A STATUS message has been received from a peer. This resets the status timer.
@@ -409,9 +400,16 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
 
     /* Notifications from the Swarm */
 
-    // A peer is being dialed.
-    pub fn dial_peers(&mut self, mut peers: Vec<Enr>) {
-        self.peers_to_dial.append(&mut peers);
+    /// A peer is being dialed.
+    pub fn dial_peer(&mut self, peer: Enr) {
+        if self
+            .network_globals
+            .peers
+            .read()
+            .should_dial(&peer.peer_id())
+        {
+            self.peers_to_dial.push(peer);
+        }
     }
 
     /// Reports if a peer is banned or not.

beacon_node/lighthouse_network/src/service/mod.rs

@@ -1066,9 +1066,8 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
         let peers_to_dial: Vec<Enr> = self
             .discovery()
             .cached_enrs()
-            .filter_map(|(peer_id, enr)| {
-                let peers = self.network_globals.peers.read();
-                if predicate(enr) && peers.should_dial(peer_id) {
+            .filter_map(|(_peer_id, enr)| {
+                if predicate(enr) {
                     Some(enr.clone())
                 } else {
                     None
@@ -1078,10 +1077,9 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
 
         // Remove the ENR from the cache to prevent continual re-dialing on disconnects
         peers_to_dial.iter().for_each(|enr| {
+            self.peer_manager_mut().dial_peer(enr.clone());
             self.discovery_mut().remove_cached_enr(&enr.peer_id());
         });
-
-        self.peer_manager_mut().dial_peers(peers_to_dial);
     }
 
     /* Sub-behaviour event handling functions */
@@ -1366,19 +1364,6 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
         }
     }
 
-    /// Handle a discovery event.
-    fn inject_discovery_event(
-        &mut self,
-        event: DiscoveredPeers,
-    ) -> Option<NetworkEvent<AppReqId, TSpec>> {
-        // Inform the peer manager about discovered peers.
-        //
-        // The peer manager will subsequently decide which peers need to be dialed and then dial
-        // them.
-        self.peer_manager_mut().peers_discovered(event.peers);
-        None
-    }
-
     /// Handle an identify event.
     fn inject_identify_event(
         &mut self,
@@ -1479,7 +1464,14 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                     BehaviourEvent::BannedPeers(void) => void::unreachable(void),
                     BehaviourEvent::Gossipsub(ge) => self.inject_gs_event(ge),
                     BehaviourEvent::Eth2Rpc(re) => self.inject_rpc_event(re),
-                    BehaviourEvent::Discovery(de) => self.inject_discovery_event(de),
+                    // Inform the peer manager about discovered peers.
+                    //
+                    // The peer manager will subsequently decide which peers need to be dialed and then dial
+                    // them.
+                    BehaviourEvent::Discovery(DiscoveredPeers { peers }) => {
+                        self.peer_manager_mut().peers_discovered(peers);
+                        None
+                    }
                     BehaviourEvent::Identify(ie) => self.inject_identify_event(ie),
                     BehaviourEvent::PeerManager(pe) => self.inject_pm_event(pe),
                     BehaviourEvent::ConnectionLimits(le) => void::unreachable(le),
@@ -1561,10 +1553,7 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                         None
                     }
                 }
-                SwarmEvent::Dialing {
-                    peer_id: _,
-                    connection_id: _,
-                } => None,
+                SwarmEvent::Dialing { .. } => None,
             };
 
             if let Some(ev) = maybe_event {

beacon_node/lighthouse_network/tests/common.rs

@@ -76,7 +76,7 @@ pub fn build_config(port: u16, mut boot_nodes: Vec<Enr>) -> NetworkConfig {
         .unwrap();
 
     config.set_ipv4_listening_address(std::net::Ipv4Addr::UNSPECIFIED, port, port, port + 1);
-    config.enr_disc4_port = Some(port);
+    config.enr_udp4_port = Some(port);
     config.enr_address = (Some(std::net::Ipv4Addr::LOCALHOST), None);
     config.boot_nodes_enr.append(&mut boot_nodes);
     config.network_dir = path.into_path();

beacon_node/network/src/service/tests.rs

@@ -60,7 +60,7 @@ mod tests {
         );
 
         let mut config = NetworkConfig::default();
-        config.set_ipv4_listening_address(std::net::Ipv4Addr::UNSPECIFIED, 21212, 21212);
+        config.set_ipv4_listening_address(std::net::Ipv4Addr::UNSPECIFIED, 21212, 21212, 21212);
         config.discv5_config.table_filter = |_| true; // Do not ignore local IPs
         config.upnp_enabled = false;
         config.boot_nodes_enr = enrs.clone();