From: Matt Joiner <anacrolix@gmail.com>
Date: Wed, 12 May 2021 04:26:45 +0000 (+1000)
Subject: Fix race in webtorrent dial stats
X-Git-Tag: v1.28.0~5
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=bdcba73cf9c07e2720b7241e1aeeeb332a478143;p=btrtrc.git

Fix race in webtorrent dial stats
---

diff --git a/webtorrent/tracker_client.go b/webtorrent/tracker_client.go
index 4d2ae499..7972fb08 100644
--- a/webtorrent/tracker_client.go
+++ b/webtorrent/tracker_client.go
@@ -67,7 +67,9 @@ type onDataChannelOpen func(_ datachannel.ReadWriteCloser, dcc DataChannelContex
 
 func (tc *TrackerClient) doWebsocket() error {
 	metrics.Add("websocket dials", 1)
+	tc.mu.Lock()
 	tc.stats.Dials++
+	tc.mu.Unlock()
 	c, _, err := websocket.DefaultDialer.Dial(tc.Url, nil)
 	if err != nil {
 		return fmt.Errorf("dialing tracker: %w", err)