From 464f15cb0205e795e72e73f06ef2dd6a1e0cdce7 Mon Sep 17 00:00:00 2001
From: v2ray <admin@v2ray.com>
Date: Tue, 23 Feb 2016 21:50:19 +0100
Subject: [PATCH] pick truely unused port

---
 shell/point/inbound_detour_dynamic.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/shell/point/inbound_detour_dynamic.go b/shell/point/inbound_detour_dynamic.go
index 7d402d2c1..7e929ba8b 100644
--- a/shell/point/inbound_detour_dynamic.go
+++ b/shell/point/inbound_detour_dynamic.go
@@ -91,9 +91,11 @@ func (this *InboundDetourHandlerDynamic) refresh() error {
 
 	this.ich2Recycle, this.ichInUse = this.ichInUse, this.ich2Recycle
 	for _, ich := range this.ichInUse {
+		port := this.pickUnusedPort()
+
 		delete(this.portsInUse, ich.Port())
 		ich.Close()
-		port := this.pickUnusedPort()
+
 		err := retry.Timed(100 /* times */, 100 /* ms */).On(func() error {
 			err := ich.Listen(port)
 			if err != nil {