Fix timeout for RTSP with only Recv track

pkg/rtsp/client.go

@@ -559,9 +559,16 @@ func (c *Conn) Handle() (err error) {
 	switch c.mode {
 	case ModeClientProducer:
 		// polling frames from remote RTSP Server (ex Camera)
-		timeout = time.Second * 5
 		go c.keepalive()
 
+		if c.HasSendTracks() {
+			// if we receiving video/audio from camera
+			timeout = time.Second * 5
+		} else {
+			// if we only send audio to camera
+			timeout = time.Second * 30
+		}
+
 	case ModeServerProducer:
 		// polling frames from remote RTSP Client (ex FFmpeg)
 		timeout = time.Second * 15
@@ -721,3 +728,12 @@ func (c *Conn) GetChannel(media *streamer.Media) int {
 	}
 	return -1
 }
+
+func (c *Conn) HasSendTracks() bool {
+	for _, track := range c.tracks {
+		if track.Direction == streamer.DirectionSendonly {
+			return true
+		}
+	}
+	return false
+}