Pull request: Fix race

Merge in DNS/adguard-home from fix-race to master

Squashed commit of the following:

commit 77b85f7fad6e10b76119e401ed59050bc83d5d72
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Feb 15 18:11:56 2023 +0300

    scripts: upd timeout

commit 2e061f7b2c70eaf897506c69d71b5892451d964f
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Feb 15 17:15:49 2023 +0300

    dnsforward: add workaround to avoid race

internal/dnsforward/dns64_test.go

@@ -273,18 +273,22 @@ func TestServer_HandleDNSRequest_dns64(t *testing.T) {
 		return resp, nil
 	})
 
-	s := createTestServer(t, &filtering.Config{}, ServerConfig{
-		UDPListenAddrs: []*net.UDPAddr{{}},
-		TCPListenAddrs: []*net.TCPAddr{{}},
-		UseDNS64:       true,
-	}, localUps)
-
 	client := &dns.Client{
 		Net:     "tcp",
 		Timeout: 1 * time.Second,
 	}
 
 	for _, tc := range testCases {
+		// TODO(e.burkov):  It seems [proxy.Proxy] isn't intended to be reused
+		// right after stop, due to a data race in [proxy.Proxy.Init] method
+		// when setting an OOB size.  As a temporary workaround, recreate the
+		// whole server for each test case.
+		s := createTestServer(t, &filtering.Config{}, ServerConfig{
+			UDPListenAddrs: []*net.UDPAddr{{}},
+			TCPListenAddrs: []*net.TCPAddr{{}},
+			UseDNS64:       true,
+		}, localUps)
+
 		t.Run(tc.name, func(t *testing.T) {
 			s.conf.UpstreamConfig.Upstreams = []upstream.Upstream{newUps(tc.upsAns)}
 			startDeferStop(t, s)

scripts/make/go-test.sh

@@ -40,7 +40,7 @@ readonly go
 count_flags='--count=1'
 cover_flags='--coverprofile=./coverage.txt'
 shuffle_flags='--shuffle=on'
-timeout_flags="${TIMEOUT_FLAGS:---timeout=60s}"
+timeout_flags="${TIMEOUT_FLAGS:---timeout=90s}"
 readonly count_flags cover_flags shuffle_flags timeout_flags
 
 "$go" test "$count_flags" "$cover_flags" "$race_flags" "$shuffle_flags" "$timeout_flags"\