measure 2-hop neighbourhood

1 files changed, 4 insertions, 0 deletions

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index 22782ef..9ae8ff2 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -210,6 +210,10 @@ pub(crate) struct Status {
     /// sent as sync messages (an eager link, `swarm::relay`), not only announced. Every
     /// STATUS says so, or not, again: one lost changes nothing for long.
     pub(crate) eager: bool,
+    /// Whom the sender reaches (`swarm::reach`): the pair keys (`topology::pair_key`)
+    /// of the members it has an active session with, sorted. In keepalive STATUSes and
+    /// their replies, and when it changed; not in announcements of heads (None).
+    pub(crate) reaches: Option<Vec<u64>>,
 }
 
 /// Cheap to clone: large parts are shared (`bytes::Bytes`).