From d59f410c97d58cd207c92063157991d723cf24a3 Mon Sep 17 00:00:00 2001
From: xtaci <daniel820313@gmail.com>
Date: Tue, 24 Sep 2019 05:20:15 +0000
Subject: [PATCH] reset fastack = 0 to prevent from sending needless data

---
 kcp.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kcp.go b/kcp.go
index 5c626c6..f1cc764 100644
--- a/kcp.go
+++ b/kcp.go
@@ -809,6 +809,7 @@ func (kcp *KCP) flush(ackOnly bool) uint32 {
 			} else {
 				segment.rto += kcp.rx_rto / 2
 			}
+			segment.fastack = 0
 			segment.resendts = current + segment.rto
 			lost++
 			lostSegs++