From 691c135c22f257cc9cebbeb0490ce71d165c15d6 Mon Sep 17 00:00:00 2001
From: Scott Powell <sqij@protonmail.com>
Date: Mon, 17 Mar 2025 19:35:08 +1100
Subject: [PATCH] * workaround for TRACE packets so they can follow a return
 path

---
 src/Packet.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Packet.cpp b/src/Packet.cpp
index 71f89c1f..e338b60d 100644
--- a/src/Packet.cpp
+++ b/src/Packet.cpp
@@ -14,6 +14,9 @@ void Packet::calculatePacketHash(uint8_t* hash) const {
   SHA256 sha;
   uint8_t t = getPayloadType();
   sha.update(&t, 1);
+  if (t == PAYLOAD_TYPE_TRACE) {
+    sha.update(&path_len, sizeof(path_len));   // CAVEAT: TRACE packets can revisit same node on return path
+  }
   sha.update(payload, payload_len);
   sha.finalize(hash, MAX_HASH_SIZE);
 }