From 05649d48e6548bb31d1064439e0eaf94ba55c09d Mon Sep 17 00:00:00 2001
From: liuluyao <liuluyao@pingan.com.cn>
Date: Thu, 19 Oct 2023 15:39:56 +0800
Subject: [PATCH] fix: sometime pcap_next returns 0 which lead to segment fault

---
 dpi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dpi.c b/dpi.c
index 7407d25..41fb25c 100644
--- a/dpi.c
+++ b/dpi.c
@@ -213,6 +213,7 @@ void *xcap(void *v_dev_name) {
 
   while (runtime__xcap) {
     packet = pcap_next(handle, &header);
+    if(!packet) continue;
     ep = (struct ether_header *)packet;
     ether_type = ntohs(ep->ether_type);
     if (ether_type != ETHERTYPE_IP) {