Verify native UDP audio against local Mumble

gumble/gumble/client.go

@@ -387,6 +387,14 @@ func (c *Client) WriteAudio(format, target byte, sequence int64, final bool, dat
 	return c.Conn.WriteAudio(format, target, sequence, final, data, X, Y, Z)
 }
 
+// UDPActive reports whether an authenticated UDP packet has confirmed the
+// return path and outgoing audio may use native UDP.
+func (c *Client) UDPActive() bool {
+	c.udpMu.RLock()
+	defer c.udpMu.RUnlock()
+	return c.udpActive
+}
+
 // DisableStereoEncoder switches back to mono encoding for voice and
 // resets the stereo encoder so stale state does not bleed into the
 // next file playback.

gumble/gumble/integration_audio_test.go

@@ -35,7 +35,7 @@ func TestLocalMumbleAudioRoundTrip(t *testing.T) {
 		c := gumble.NewConfig()
 		c.Address = "localhost:64738"
 		c.Username = name
-		c.DisableUDP = true
+		c.DisableUDP = false
 		return c
 	}
 	tlsConfig := &tls.Config{InsecureSkipVerify: true}
@@ -56,7 +56,10 @@ func TestLocalMumbleAudioRoundTrip(t *testing.T) {
 	if sender.AudioEncoder == nil {
 		t.Fatal("no negotiated audio encoder")
 	}
-	time.Sleep(500 * time.Millisecond)
+	time.Sleep(1500 * time.Millisecond)
+	if !sender.UDPActive() || !receiver.UDPActive() {
+		t.Fatalf("native UDP did not become active: sender=%v receiver=%v", sender.UDPActive(), receiver.UDPActive())
+	}
 	frame := make([]int16, sendConfig.AudioFrameSize())
 	for i := 0; i < 8; i++ {
 		for sample := range frame {