From 1a6a179b68f4bd40717e3e76b529ade102b86c72 Mon Sep 17 00:00:00 2001
From: fatedier <fatedier@gmail.com>
Date: Tue, 5 Dec 2017 22:26:53 +0800
Subject: [PATCH] visitor: fix panic

---
 client/visitor.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/client/visitor.go b/client/visitor.go
index 76f28d9..e7a22d8 100644
--- a/client/visitor.go
+++ b/client/visitor.go
@@ -259,7 +259,11 @@ func (sv *XtcpVisitor) handleConn(userConn frpNet.Conn) {
 	sv.Trace("send all detect msg done")
 
 	// Listen for visitorConn's address and wait for client connection.
-	lConn, _ := net.ListenUDP("udp", laddr)
+	lConn, err := net.ListenUDP("udp", laddr)
+	if err != nil {
+		sv.Error("listen on visitorConn's local adress error: %v", err)
+		return
+	}
 	lConn.SetReadDeadline(time.Now().Add(5 * time.Second))
 	sidBuf := pool.GetBuf(1024)
 	n, _, err = lConn.ReadFromUDP(sidBuf)