From 7d02d79ff50da5a8ff206807000ec085c2f29cbd Mon Sep 17 00:00:00 2001
From: Igor Katson <igor.katson@gmail.com>
Date: Wed, 29 Nov 2023 23:57:11 +0000
Subject: [PATCH] Using response freshness in ordering

---
 crates/dht/src/dht.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/crates/dht/src/dht.rs b/crates/dht/src/dht.rs
index 97a2101..e6610aa 100644
--- a/crates/dht/src/dht.rs
+++ b/crates/dht/src/dht.rs
@@ -437,7 +437,16 @@ impl<C: RecursiveRequestCallbacks> RecursiveRequest<C> {
             let has_returned_peers_desc = Reverse(n.returned_peers);
             let has_responded_desc = Reverse(n.last_response.is_some() as u8);
             let distance = n.id.distance(&self.info_hash);
-            (has_returned_peers_desc, has_responded_desc, distance)
+            let freshest_response = n
+                .last_response
+                .map(|r| r.elapsed())
+                .unwrap_or(Duration::MAX);
+            (
+                has_returned_peers_desc,
+                has_responded_desc,
+                distance,
+                freshest_response,
+            )
         });
         if closest_nodes.len() > LIMIT {
             let popped = closest_nodes.pop().unwrap();