From 3218eda4819a5a41537ab31ccc2d2ecab6353a75 Mon Sep 17 00:00:00 2001
From: fatedier <fatedier@gmail.com>
Date: Mon, 14 Mar 2016 00:39:32 +0800
Subject: [PATCH] models/server: fix bug, program will core if listener is nil

---
 src/frp/models/server/server.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/frp/models/server/server.go b/src/frp/models/server/server.go
index e8d6d810..0b9f38a2 100644
--- a/src/frp/models/server/server.go
+++ b/src/frp/models/server/server.go
@@ -128,7 +128,9 @@ func (p *ProxyServer) Start() (err error) {
 func (p *ProxyServer) Close() {
 	p.Lock()
 	p.Status = consts.Idle
-	p.listener.Close()
+	if p.listener != nil {
+		p.listener.Close()
+	}
 	close(p.ctlMsgChan)
 	close(p.cliConnChan)
 	p.userConnList = list.New()