introduce per-transport sync reply timeout

1 files changed, 7 insertions, 0 deletions

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index a802269..1de0633 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -768,6 +768,13 @@ pub(crate) trait Transport: Send + Sync {
     /// a message sent is delivered or lost for good.
     fn delivery_limit(&self) -> std::time::Duration;
 
+    /// The first wait for an answer to a sync message (`Timing::sync_reply_timeout`): by
+    /// default `SYNC_REPLY_TIMEOUT`, longer on a transport whose round trips take
+    /// seconds.
+    fn sync_reply_timeout(&self) -> std::time::Duration {
+        crate::state::SYNC_REPLY_TIMEOUT
+    }
+
     /// Where this node can be reached, as addresses other nodes can use: published in
     /// the member list (`swarm::members`). By default its identity, for a transport
     /// whose identities are addresses (Mycelium: a public key).