From ad858a0d326e320c03dedac8b7516d8769d61c55 Mon Sep 17 00:00:00 2001
From: fatedier <fatedier@gmail.com>
Date: Wed, 1 Nov 2017 10:51:30 +0800
Subject: [PATCH] prevent sending on a closed channel in vhost package, fix
 #502

---
 utils/vhost/vhost.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/utils/vhost/vhost.go b/utils/vhost/vhost.go
index bb2b4ad..7e11d72 100644
--- a/utils/vhost/vhost.go
+++ b/utils/vhost/vhost.go
@@ -18,6 +18,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/fatedier/frp/utils/errors"
 	"github.com/fatedier/frp/utils/log"
 	frpNet "github.com/fatedier/frp/utils/net"
 )
@@ -162,7 +163,12 @@ func (v *VhostMuxer) handle(c frpNet.Conn) {
 	c = sConn
 
 	l.Debug("get new http request host [%s] path [%s]", name, path)
-	l.accept <- c
+	err = errors.PanicToError(func() {
+		l.accept <- c
+	})
+	if err != nil {
+		l.Warn("listener is already closed, ignore this request")
+	}
 }
 
 type Listener struct {