add support for several transports

1 files changed, 8 insertions, 0 deletions

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index 52db406..cbbef45 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -537,6 +537,14 @@ pub(crate) trait Transport: Send + Sync {
         vec![peer.to_owned()]
     }
 
+    /// 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`.
+    fn can_reach(&self, peer: &str) -> bool {
+        let _ = peer;
+        true
+    }
+
     /// Where others say `peer` can be reached (the member list, a HELLO_REPLY): hints,
     /// to be checked before they are relied on. By default nothing to learn, as for
     /// `local_addresses`.