fix(reflectors): retain responsive peers on partial reselection

src/reflector_selector.rs

@@ -252,17 +252,21 @@ impl ReflectorSelector {
                 candidates.swap(i, j);
             }
 
-            if (candidates.len() as u8) < num_reflectors {
+            if candidates.is_empty() {
-                info!(
+                info!("No usable reflectors, retaining current set");
-                    "Only {} usable reflectors, retaining current set of {}",
-                    candidates.len(),
-                    num_reflectors
-                );
                 self.reflector_tx.send(current_peers.clone())?;
                 *reflectors_peers = current_peers;
                 continue;
             }
 
+            if (candidates.len() as u8) < num_reflectors {
+                info!(
+                    "Only {} usable reflectors, selecting available candidates",
+                    candidates.len()
+                );
+            }
+            let num_reflectors = num_reflectors.min(candidates.len() as u8);
+
             let mut new_peers = Vec::new();
             for i in 0..num_reflectors {
                 let peer = candidates[i as usize].0;