libp2p: make named relay error more verbose

1 files changed, 7 insertions, 2 deletions

diff --git a/src/transport/libp2p.rs b/src/transport/libp2p.rs
index 67ee6b5..c67f681 100644
--- a/src/transport/libp2p.rs
+++ b/src/transport/libp2p.rs
@@ -1517,11 +1517,16 @@ async fn run(
                                     let _ = again.send(Command::CheckRelays);
                                 }
                             }
-                            _ => {
+                            failed => {
                                 if !lock(&book).finding.contains_key(&address) {
                                     return; // No longer named.
                                 }
-                                warn!(relay = %Addressed(SCHEME, &address), "Couldn't reach a named relay; trying again later");
+                                let error = match failed {
+                                    Ok(Ok(Err(error))) => error,
+                                    Ok(_) => "the libp2p swarm stopped".to_owned(),
+                                    Err(_) => format!("no answer within {CONNECT_TIMEOUT:?}"),
+                                };
+                                warn!(relay = %Addressed(SCHEME, &address), error = %error, retry = ?RELAY_RETRY, "Couldn't reach a named relay; trying again later");
                                 tokio::time::sleep(RELAY_RETRY).await;
                                 let _ = again.send(Command::FindRelay { address });
                             }