remove condition from rtcpreceiver

connclientread.go

@@ -97,10 +97,8 @@ func (c *ConnClient) backgroundPlayUDP(onFrameDone chan error) {
 			now := time.Now()
 			for trackId := range c.rtcpReceivers {
 				r := c.rtcpReceivers[trackId].Report(now)
-				if r != nil {
 				c.udpRtcpListeners[trackId].write(r)
 			}
-			}
 
 		case <-keepaliveTicker.C:
 			_, err := c.Do(&base.Request{
@@ -194,7 +192,6 @@ func (c *ConnClient) backgroundPlayTCP(onFrameDone chan error) {
 			now := time.Now()
 			for trackId := range c.rtcpReceivers {
 				r := c.rtcpReceivers[trackId].Report(now)
-				if r != nil {
 				c.nconn.SetWriteDeadline(time.Now().Add(c.d.WriteTimeout))
 				frame := base.InterleavedFrame{
 					TrackId:    trackId,
@@ -203,7 +200,6 @@ func (c *ConnClient) backgroundPlayTCP(onFrameDone chan error) {
 				}
 				frame.Write(c.bw)
 			}
-			}
 
 		case err := <-readerDone:
 			returnError = err

pkg/rtcpsender/rtcpsender.go

@@ -57,6 +57,7 @@ func (rs *RtcpSender) OnFrame(ts time.Time, streamType base.StreamType, buf []by
 }
 
 // Report generates a RTCP sender report.
+// It returns nil if no packets has been passed to OnFrame yet.
 func (rs *RtcpSender) Report(ts time.Time) []byte {
 	rs.mutex.Lock()
 	defer rs.mutex.Unlock()