From 276f936fc8730504666fbf1c3c5b2942f9be9016 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Fri, 23 Oct 2026 22:12:20 +0200
Subject: enrich keepalive content

Add ready and syncs_with_you flags as well as actual heads, so the peer
- ready: same meaning as in the sync message
- syncs_with_you: sender counts recipient as member and in same epoch
- heads: allows to tell who's behind or if both sides have changes
---
 src/state.rs | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

(limited to 'src/state.rs')

diff --git a/src/state.rs b/src/state.rs
index 23892a9..72013b9 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -121,8 +121,11 @@ pub(crate) struct PeerState {
     /// Epoch the peer advertised in its most recent message.
     pub(crate) epoch: Option<Epoch>,
 
-    /// Whether the peer was ready according to its most recent sync message.
+    /// Whether the peer was ready according to its most recent sync message or keepalive.
     pub(crate) reports_ready: Option<bool>,
+
+    /// Whether the peer said, in its most recent keepalive, that it would sync with us.
+    pub(crate) syncs_with_us: Option<bool>,
 }
 
 /// One Automerge sync with a peer, from a reset to the next. Everything a reset must
@@ -326,6 +329,7 @@ impl PeerState {
             last_resync_at: None,
             epoch: None,
             reports_ready: None,
+            syncs_with_us: None,
         }
     }
 
@@ -431,8 +435,8 @@ impl PeerState {
     /// Self-healing check on PING/PONG. Returns true if a re-handshake should start.
     pub(crate) fn needs_heal(
         &mut self,
-        local: &transport::HeadsDigest,
-        remote: &transport::HeadsDigest,
+        local: &transport::HeadsSummary,
+        remote: &transport::HeadsSummary,
         timing: &Timing,
         now: Instant,
     ) -> bool {
@@ -792,11 +796,11 @@ impl AppState {
             }
         }
 
-        let keepalive = crate::swarm::peer::local_keepalive(self).await;
         for id in announce {
+            let keepalive = crate::swarm::peer::local_keepalive(self, id).await;
             if let Err(error) = self
                 .transport
-                .send_message(id, &transport::ParsedMessage::Ping(keepalive.clone()))
+                .send_message(id, &transport::ParsedMessage::Ping(keepalive))
                 .await
             {
                 debug!(peer = %id, error = %format!("{error:#}"), "Epoch announcement failed");
-- 
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