From 0b13e180c4dcd38e3ea8ffeecc9e5ebefa023212 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Mon, 26 Oct 2026 05:54:53 +0100
Subject: number handshakes

This prevents late hellos from resetting the session.
---
 src/transport/mod.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/transport/mod.rs')

diff --git a/src/transport/mod.rs b/src/transport/mod.rs
index b2ce63f..614ac48 100644
--- a/src/transport/mod.rs
+++ b/src/transport/mod.rs
@@ -256,6 +256,10 @@ pub struct HelloRequest {
     /// Random per run of the sender; the reply echoes it.
     #[serde(with = "crate::transport::wire::codec::run_id")]
     pub run_id: RunId,
+    /// The handshake's number: the sender numbers the handshakes it starts in a run,
+    /// with all peers, from 1. A retry carries the same number, so the recipient resets
+    /// its sync session only for a new handshake, not for every resend or late copy.
+    pub handshake: u32,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
-- 
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