Add support for simultaneous requests from different consumers

cmd/streams/stream.go

@@ -18,6 +18,7 @@ type Stream struct {
 	producers []*Producer
 	consumers []*Consumer
 	mu        sync.Mutex
+	wg        sync.WaitGroup
 }
 
 func NewStream(source interface{}) *Stream {
@@ -59,6 +60,9 @@ func (s *Stream) AddConsumer(cons streamer.Consumer) (err error) {
 
 	var codecs string
 
+	// support for multiple simultaneous requests from different consumers
+	s.wg.Add(1)
+
 	// Step 1. Get consumer medias
 	for icc, consMedia := range cons.GetMedias() {
 		log.Trace().Stringer("media", consMedia).
@@ -97,6 +101,9 @@ func (s *Stream) AddConsumer(cons streamer.Consumer) (err error) {
 		}
 	}
 
+	s.wg.Done()
+	s.wg.Wait()
+
 	if len(producers) == 0 {
 		s.stopProducers()