feat: Add random lookup for discv4 (#5975)

crates/net/discv4/Cargo.toml

@@ -23,7 +23,6 @@ discv5.workspace = true
 secp256k1 = { workspace = true, features = ["global-context", "rand-std", "recovery", "serde"] }
 enr = { workspace = true, default-features = false, features = ["rust-secp256k1"] }
 rlp = "0.5" # needed for enr
-
 # async/futures
 tokio = { workspace = true, features = ["io-util", "net", "time"] }
 tokio-stream.workspace = true

crates/net/discv4/src/lib.rs

@@ -283,6 +283,12 @@ impl Discv4 {
         self.lookup_node(Some(node_id)).await
     }
 
+    /// Performs a random lookup for node records.
+    pub async fn lookup_random(&self) -> Result<Vec<NodeRecord>, Discv4Error> {
+        let target = PeerId::random();
+        self.lookup_node(Some(target)).await
+    }
+
     /// Sends a message to the service to lookup the closest nodes
     pub fn send_lookup(&self, node_id: PeerId) {
         let cmd = Discv4Command::Lookup { node_id: Some(node_id), tx: None };