build topology per transport

1 files changed, 8 insertions, 0 deletions

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index 6ae3814..3f77306 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -555,6 +555,14 @@ pub(crate) trait Transport: Send + Sync {
         vec![peer.to_owned()]
     }
 
+    /// The transports this node is on, as the schemes of their addresses
+    /// (`swarm::topology`), whether or not it has an address on each (one that only
+    /// connects out has none). By default the empty scheme, for a transport whose
+    /// identities are addresses.
+    fn transports(&self) -> Vec<String> {
+        vec![String::new()]
+    }
+
     /// Seeds the transport found by itself since last asked (libp2p: nodes on the LAN),
     /// for a node that is joining. By default none.
     fn discovered_seeds(&self) -> Vec<String> {