From 10af0ca7a98be14b177c69c646f3f353976b6815 Mon Sep 17 00:00:00 2001
From: ospab <ospab@ospab.host>
Date: Thu, 28 May 2026 13:49:33 +0300
Subject: [PATCH] Add session id mismatch error trace

---
 ostp-core/src/protocol.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ostp-core/src/protocol.rs b/ostp-core/src/protocol.rs
index 4f2a4fd..153ed07 100644
--- a/ostp-core/src/protocol.rs
+++ b/ostp-core/src/protocol.rs
@@ -230,6 +230,7 @@ impl ProtocolMachine {
 
         let session_id = u32::from_be_bytes([raw_vec[0], raw_vec[1], raw_vec[2], raw_vec[3]]);
         if session_id != self.session_id {
+            tracing::error!("session id mismatch! expected={:#010x}, got={:#010x}, is_handshake={}, raw_len={}", self.session_id, session_id, is_handshake, raw_vec.len());
             return Err(ProtocolError::State("session id mismatch".to_string()));
         }