unanswered members not reached

1 files changed, 6 insertions, 0 deletions

diff --git a/src/state/timing.rs b/src/state/timing.rs
index af5c0c0..fed48e9 100644
--- a/src/state/timing.rs
+++ b/src/state/timing.rs
@@ -35,6 +35,11 @@ pub(crate) struct Timing {
     /// First wait for an answer to a sync message before sending again; doubles while
     /// answers stay out (`SyncSession::reply_backoff`).
     pub(crate) sync_reply_timeout: Duration,
+    /// How long what we sent a peer may go unanswered, with nothing else heard from it,
+    /// before we don't count it as reached (`swarm::reach`, `PeerState::answer_overdue`):
+    /// twice the first sync reply timeout, so one lost message (or its answer) doesn't
+    /// do it.
+    pub(crate) unreached_after: Duration,
     /// How long the transport tries to deliver a message before dropping it
     /// (`Transport::delivery_limit`): a peer silent for longer has nothing on the way to
     /// us any more.
@@ -93,6 +98,7 @@ impl Timing {
             // Only the source gets these, and only while catching up.
             catch_up_probe: (keepalive / 30).clamp(Duration::from_secs(1), Duration::from_secs(5)),
             sync_reply_timeout,
+            unreached_after: sync_reply_timeout * 2,
             delivery_limit,
         }
     }