From 1c5fafde85d600abc50e88ebb23750ea7d8dc7c9 Mon Sep 17 00:00:00 2001
From: ShivamKumar <shivamkingkumar1@gmail.com>
Date: Tue, 19 May 2026 01:33:13 +0530
Subject: [PATCH] Fix Uint8Array concat crash in Parse IPv4 header

---
 src/core/operations/ParseIPv4Header.mjs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/operations/ParseIPv4Header.mjs b/src/core/operations/ParseIPv4Header.mjs
index a1ab93b3..65a8b63f 100644
--- a/src/core/operations/ParseIPv4Header.mjs
+++ b/src/core/operations/ParseIPv4Header.mjs
@@ -74,7 +74,7 @@ class ParseIPv4Header extends Operation {
             checksum = input[10] << 8 | input[11],
             srcIP = input[12] << 24 | input[13] << 16 | input[14] << 8 | input[15],
             dstIP = input[16] << 24 | input[17] << 16 | input[18] << 8 | input[19],
-            checksumHeader = input.slice(0, 10).concat([0, 0]).concat(input.slice(12, 20));
+            checksumHeader = [...input.slice(0, 10), 0, 0, ...input.slice(12, 20)];
         let version = (input[0] >>> 4) & 0x0f,
             options = [];