From 9ef22118a4b25863aa94546daffbc0a18feaafb3 Mon Sep 17 00:00:00 2001
From: Brad Fitzpatrick <bradfitz@golang.org>
Date: Wed, 9 Nov 2016 21:27:32 +0000
Subject: [PATCH] http2: fix CloseNotify data race

Fixes golang/go#17868

Change-Id: I7f9d85f404198d68757d7ca5bb8b1e7aafaafa8b
Reviewed-on: https://go-review.googlesource.com/33013
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Tom Bergan <tombergan@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
---
 http2/server.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/http2/server.go b/http2/server.go
index 79f4edfa1..ca77d71d1 100644
--- a/http2/server.go
+++ b/http2/server.go
@@ -2276,8 +2276,9 @@ func (w *responseWriter) CloseNotify() <-chan bool {
 	if ch == nil {
 		ch = make(chan bool, 1)
 		rws.closeNotifierCh = ch
+		cw := rws.stream.cw
 		go func() {
-			rws.stream.cw.Wait() // wait for close
+			cw.Wait() // wait for close
 			ch <- true
 		}()
 	}