Don't add duplicates in addLocal.

2a35f4e5 · Juliusz Chroboczek · 9575b808 · 2a35f4e5
Commit 2a35f4e5 authored May 22, 2020 by Juliusz Chroboczek
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group.go group.go +6 -0

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--- a/group.go
+++ b/group.go
@@ -52,6 +52,12 @@ func (up *upTrack) notifyLocal() {

 func (up *upTrack) addLocal(local *downTrack) {
 	up.mu.Lock()
+	for _, t := range up.local {
+		if t == local {
+			up.mu.Unlock()
+			return
+		}
+	}
 	up.local = append(up.local, local)
 	up.mu.Unlock()
 	up.notifyLocal()