From 3d8df4a01b0d1a34056ba3838c03c01a092a6a75 Mon Sep 17 00:00:00 2001
From: dylanhuang <j75689@gmail.com>
Date: Wed, 24 Jul 2024 13:07:27 +0800
Subject: [PATCH] fix: check parent hash of disconnected headers (#81)

---
 crates/bsc/engine/src/task.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/crates/bsc/engine/src/task.rs b/crates/bsc/engine/src/task.rs
index e2bffe883..280a28912 100644
--- a/crates/bsc/engine/src/task.rs
+++ b/crates/bsc/engine/src/task.rs
@@ -310,6 +310,13 @@ impl<
                         }
                         disconnected_headers.push(sealed_header.clone());
                     }
+
+                    // check last header.parent_hash is match the trusted header
+                    if !disconnected_headers.is_empty() &&
+                        disconnected_headers.last().unwrap().parent_hash != trusted_header.hash()
+                    {
+                        continue;
+                    }
                 };
 
                 // cache header and block