Bleeding edge discovery (#2435)

* Update discovery banning logic and tokio

* Update to latest discovery

* Shift to latest discovery

* Fmt

Author: AgeManning

beacon_node/eth2_libp2p/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["Sigma Prime <[email protected]>"]
 edition = "2018"
 
 [dependencies]
-discv5 = { version = "0.1.0-beta.5", features = ["libp2p"] }
+discv5 = { version = "0.1.0-beta.6", features = ["libp2p"] }
 unsigned-varint = { version = "0.6.0", features = ["codec"] }
 types = { path =  "../../consensus/types" }
 hashset_delay = { path = "../../common/hashset_delay" }

beacon_node/eth2_libp2p/src/config.rs

@@ -174,6 +174,10 @@ impl Default for Config {
             .disable_report_discovered_peers()
             .ip_limit() // limits /24 IP's in buckets.
             .incoming_bucket_limit(8) // half the bucket size
+            .filter_rate_limiter(filter_rate_limiter)
+            .filter_max_bans_per_ip(Some(5))
+            .filter_max_nodes_per_ip(Some(10))
+            .ban_duration(Some(Duration::from_secs(3600)))
             .ping_interval(Duration::from_secs(300))
             .build();