Remove backwards-compatibility networking hack

client/finality-grandpa/src/lib.rs

@@ -676,10 +676,10 @@ pub fn grandpa_peers_set_config() -> sc_network::config::NonDefaultSetConfig {
 		// Notifications reach ~256kiB in size at the time of writing on Kusama and Polkadot.
 		max_notification_size: 1024 * 1024,
 		set_config: sc_network::config::SetConfig {
-			in_peers: 25,
-			out_peers: 25,
+			in_peers: 0,
+			out_peers: 0,
 			reserved_nodes: Vec::new(),
-			non_reserved_mode: sc_network::config::NonReservedPeerMode::Accept,
+			non_reserved_mode: sc_network::config::NonReservedPeerMode::Deny,
 		},
 	}
 }

client/network/src/protocol.rs

@@ -424,12 +424,11 @@ impl<B: BlockT, H: ExHashT> Protocol<B, H> {
 			// The `reserved_nodes` of this set are later kept in sync with the peers we connect
 			// to through set 0.
 			sets.push(sc_peerset::SetConfig {
-				in_peers: network_config.default_peers_set.in_peers,
-				out_peers: network_config.default_peers_set.out_peers,
+				in_peers: 0,
+				out_peers: 0,
 				bootnodes: Vec::new(),
-				reserved_nodes: default_sets_reserved,
-				reserved_only: network_config.default_peers_set.non_reserved_mode
-					== config::NonReservedPeerMode::Deny,
+				reserved_nodes: HashSet::new(),
+				reserved_only: true,
 			});
 
 			for set_cfg in &network_config.extra_sets {