From 5a5c9b891d5df1bdbcb0218c39ad0db6531547f8 Mon Sep 17 00:00:00 2001
From: v2ray <admin@v2ray.com>
Date: Mon, 27 Jun 2016 11:18:14 +0200
Subject: [PATCH] correct window calculation

---
 transport/internet/kcp/kcp.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/transport/internet/kcp/kcp.go b/transport/internet/kcp/kcp.go
index 6ddcad4f..a03bd6a2 100644
--- a/transport/internet/kcp/kcp.go
+++ b/transport/internet/kcp/kcp.go
@@ -550,7 +550,7 @@ func (kcp *KCP) flush() {
 
 	// calculate window size
 
-	cwnd := _imin_(kcp.snd_nxt+kcp.snd_wnd, kcp.rmt_wnd)
+	cwnd := _imin_(kcp.snd_una+kcp.snd_wnd, kcp.rmt_wnd)
 	if kcp.congestionControl {
 		cwnd = _imin_(kcp.cwnd, cwnd)
 	}