libp2p: dial newly announced peer addresses

1 files changed, 29 insertions, 0 deletions

diff --git a/src/transport/libp2p/tests.rs b/src/transport/libp2p/tests.rs
index 3d11913..ed23b34 100644
--- a/src/transport/libp2p/tests.rs
+++ b/src/transport/libp2p/tests.rs
@@ -696,6 +696,35 @@ fn ignored_addresses_not_kept() {
     assert!(!book.knows(them, &[via_vpn]));
 }
 
+/// A node connected directly over the WLAN dials the ethernet address it later hears
+/// of, once; and when an interface of ours comes, every address again, the one in use
+/// too.
+#[test]
+fn better_paths_explored() {
+    let mut book = Book::default();
+    let them = peer();
+    let wlan: Multiaddr = "/ip4/192.168.1.7/tcp/9661".parse().unwrap();
+    let ethernet: Multiaddr = "/ip4/192.168.2.7/tcp/9661".parse().unwrap();
+    book.continuum.insert(them);
+    book.remember(them, wlan.clone());
+    // Connected (inbound: from another port) over the WLAN.
+    book.connections.insert(
+        ConnectionId::new_unchecked(1),
+        (them, false, "/ip4/192.168.1.7/tcp/40000".parse().unwrap()),
+    );
+    assert!(book.to_explore(them, false).is_empty());
+    book.identified(them, vec![wlan.clone(), ethernet.clone()]);
+    assert_eq!(book.to_explore(them, false), [ethernet.clone()]);
+    assert!(book.to_explore(them, false).is_empty());
+    // An interface of ours came (`driver`): all of them again.
+    book.explored.clear();
+    let mut again = book.to_explore(them, true);
+    again.sort();
+    let mut both = vec![wlan, ethernet];
+    both.sort();
+    assert_eq!(again, both);
+}
+
 /// Peers nobody mentions any more are forgotten, but connected ones.
 #[test]
 fn stale_peers_are_forgotten() {