calculate peer clock drift

1 files changed, 7 insertions, 0 deletions

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index 9a82cbe..1ce4cd1 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -880,6 +880,13 @@ pub(crate) trait Transport: Send + Sync {
         None
     }
 
+    /// How far `peer`'s clock is ahead of ours, as its PONGs say (`paths::ClockOffset`):
+    /// the narrowest bound of its paths. By default unknown.
+    fn clock_offset(&self, peer: &str) -> Option<paths::ClockOffset> {
+        let _ = peer;
+        None
+    }
+
     /// Whether the transport answers PINGs with PONGs itself (the paths layer,
     /// `transport::paths`); if not (a bare transport, in tests), the node does. By
     /// default not.