more debug logs for netsim fail

Author: Frando

iroh/examples/transfer.rs

@@ -391,6 +391,7 @@ async fn fetch(endpoint: Endpoint, remote_addr: EndpointAddr) -> Result<()> {
 
     // Attempt to connect, over the given ALPN.
     // Returns a Quinn connection.
+    info!(?remote_addr, "start to connect");
     let conn = endpoint.connect(remote_addr, TRANSFER_ALPN).await?;
     println!("Connected to {}", remote_id);
     // Spawn a background task that prints connection type changes. Will be aborted on drop.

iroh/src/magicsock/remote_map/remote_state.rs

@@ -434,6 +434,8 @@ impl RemoteStateActor {
 
     /// Handles [`RemoteStateMessage::AddEndpointAddr`].
     fn handle_msg_add_endpoint_addr(&mut self, addr: EndpointAddr, source: Source) {
+        // TODO(Frando): Remove or demote to trace.
+        debug!(?addr, ?source, "add endpoint addr");
         for sockaddr in addr.ip_addrs() {
             let addr = transports::Addr::from(sockaddr);
             self.paths