Revert "More stringent dialing (sigp#2363)"

This reverts commit 55aada0.

Author: paulhauner

beacon_node/eth2_libp2p/src/peer_manager/mod.rs

@@ -668,16 +668,18 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
             .cached_enrs()
             .filter_map(|(peer_id, enr)| {
                 let peers = self.network_globals.peers.read();
-                if predicate(enr) && peers.should_dial(peer_id) {
+                if predicate(enr)
+                    && !peers.is_connected_or_dialing(peer_id)
+                    && !peers.is_banned(peer_id)
+                {
                     Some(*peer_id)
                 } else {
                     None
                 }
             })
             .collect();
-        for peer_id in &peers_to_dial {
-            debug!(self.log, "Dialing cached ENR peer"; "peer_id" => %peer_id);
-            self.dial_peer(peer_id);
+        for peer in &peers_to_dial {
+            self.dial_peer(peer);
         }
     }
 
@@ -696,7 +698,16 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
             // we attempt a connection if this peer is a subnet peer or if the max peer count
             // is not yet filled (including dialing peers)
             if (min_ttl.is_some() || connected_or_dialing + to_dial_peers.len() < self.max_peers)
-                && self.network_globals.peers.read().should_dial(&peer_id)
+                && !self
+                    .network_globals
+                    .peers
+                    .read()
+                    .is_connected_or_dialing(&peer_id)
+                && !self
+                    .network_globals
+                    .peers
+                    .read()
+                    .is_banned_or_disconnected(&peer_id)
             {
                 // This should be updated with the peer dialing. In fact created once the peer is
                 // dialed

beacon_node/eth2_libp2p/src/peer_manager/peerdb.rs

@@ -153,16 +153,6 @@ impl<TSpec: EthSpec> PeerDB<TSpec> {
         )
     }
 
-    /// Returns true if the peer should be dialed. This checks the connection state and the
-    /// score state and determines if the peer manager should dial this peer.
-    pub fn should_dial(&self, peer_id: &PeerId) -> bool {
-        matches!(
-            self.connection_status(peer_id),
-            Some(PeerConnectionStatus::Disconnected { .. })
-                | Some(PeerConnectionStatus::Unknown { .. })
-        ) && !self.is_banned_or_disconnected(peer_id)
-    }
-
     /// Returns true if the peer is synced at least to our current head.
     pub fn is_synced(&self, peer_id: &PeerId) -> bool {
         match self.peers.get(peer_id).map(|info| &info.sync_status) {
@@ -351,7 +341,7 @@ impl<TSpec: EthSpec> PeerDB<TSpec> {
         }
 
         if let Err(e) = info.dialing_peer() {
-            error!(self.log, "{}", e; "peer_id" => %peer_id);
+            error!(self.log, "{}", e);
         }
     }