From c5b71592c88cb9f586d573abc65ca1279ca7a80c Mon Sep 17 00:00:00 2001
From: Julien Levesy <jlevesy@gmail.com>
Date: Mon, 12 Aug 2019 11:34:05 +0200
Subject: [PATCH] Make hijackConnectionTracker.Close thread safe

---
 server/server.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/server/server.go b/server/server.go
index e3b1b2851..9d73984d3 100644
--- a/server/server.go
+++ b/server/server.go
@@ -85,6 +85,8 @@ func (h *hijackConnectionTracker) Shutdown(ctx context.Context) error {
 
 // Close close all the connections in the tracked connections list
 func (h *hijackConnectionTracker) Close() {
+	h.lock.Lock()
+	defer h.lock.Unlock()
 	for conn := range h.conns {
 		if err := conn.Close(); err != nil {
 			log.Errorf("Error while closing Hijacked conn: %v", err)