From 287bab744da5c256845f49f6d9f76028ba5f08ef Mon Sep 17 00:00:00 2001
From: Thomas Eizinger <thomas@eizinger.io>
Date: Mon, 16 Jun 2025 17:41:16 +0200
Subject: [PATCH] More fine-granular timer updates

---
 boringtun/src/noise/timers.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/boringtun/src/noise/timers.rs b/boringtun/src/noise/timers.rs
index fe8f953bc..65ed9e6d7 100644
--- a/boringtun/src/noise/timers.rs
+++ b/boringtun/src/noise/timers.rs
@@ -3,6 +3,7 @@
 
 use super::errors::WireGuardError;
 use crate::noise::{Tunn, TunnResult, N_SESSIONS};
+use std::iter;
 use std::ops::{Index, IndexMut};
 
 use rand::Rng;
@@ -376,7 +377,10 @@ impl Tunn {
     ///
     /// If this returns `None`, you may call it at your usual desired precision (usually once a second is enough).
     pub fn next_timer_update(&self) -> Option<Instant> {
-        self.timers.send_handshake_at
+        iter::empty()
+            .chain(self.timers.send_handshake_at)
+            .chain(self.timers.want_passive_keepalive_at)
+            .min()
     }
 
     #[deprecated(note = "Prefer `Tunn::time_since_last_handshake_at` to avoid time-impurity")]