From 0aa48e6c5a7799aa80ca3238208f2ed7d5716f49 Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Thu, 23 Nov 2017 14:58:35 +0100
Subject: [PATCH] cancel immediately when timeout = 0

---
 common/signal/timer.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/signal/timer.go b/common/signal/timer.go
index 5c2407f7..bc2a0bd1 100644
--- a/common/signal/timer.go
+++ b/common/signal/timer.go
@@ -39,6 +39,11 @@ func (t *ActivityTimer) run() {
 		case <-t.ctx.Done():
 			return
 		case timeout := <-t.timeout:
+			if timeout == 0 {
+				t.cancel()
+				return
+			}
+
 			ticker.Stop()
 			ticker = time.NewTicker(timeout)
 		}