From 4a3d53c7ee6826c3ad29ebbe3e26530cabb898c4 Mon Sep 17 00:00:00 2001
From: gVisor bot <gvisor-bot@google.com>
Date: Tue, 23 Aug 2022 20:12:28 +0800
Subject: [PATCH] chore: log error

---
 component/sniffer/dispatcher.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/component/sniffer/dispatcher.go b/component/sniffer/dispatcher.go
index cca8f719..82a400e6 100644
--- a/component/sniffer/dispatcher.go
+++ b/component/sniffer/dispatcher.go
@@ -76,9 +76,13 @@ func (sd *SnifferDispatcher) TCPSniff(conn net.Conn, metadata *C.Metadata) {
 }
 
 func (sd *SnifferDispatcher) replaceDomain(metadata *C.Metadata, host string) {
+	dstIP := ""
+	if metadata.DstIP.IsValid() {
+		dstIP = metadata.DstIP.String()
+	}
 	log.Debugln("[Sniffer] Sniff TCP [%s:%s]-->[%s:%s] success, replace domain [%s]-->[%s]",
 		metadata.SrcIP, metadata.SrcPort,
-		metadata.DstIP, metadata.DstPort,
+		dstIP, metadata.DstPort,
 		metadata.Host, host)
 
 	metadata.AddrType = C.AtypDomainName