probe when reachable

1 files changed, 7 insertions, 0 deletions

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index 1de0633..96f7651 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -831,6 +831,13 @@ pub(crate) trait Transport: Send + Sync {
         let _ = found;
     }
 
+    /// Has the transport tell `reachable` whenever others may reach this node where they
+    /// couldn't before (libp2p: a relay granted it a slot, or AutoNAT found it public).
+    /// By default it never does.
+    fn on_reachable(&self, reachable: std::sync::Arc<tokio::sync::Notify>) {
+        let _ = reachable;
+    }
+
     /// Whether this node has a way to reach `peer` at all: an address of it on one of
     /// its transports. Members it can't reach aren't its neighbours (`swarm::topology`).
     /// By default yes, as for `local_addresses`.