Merge pull request #461 from kumaryu/feature/htmlui/video-player

HTML UI上でHLS再生をするプレイヤーを表示できるようにする

Author: kumaryu

PeerCastStation/PeerCastStation.Core/Channel.cs

@@ -191,6 +191,7 @@ private class ChannelSinkSubscription
     {
       public readonly Channel Channel;
       public readonly IChannelSink Sink;
+      private bool disposed = false;
 
       public ChannelSinkSubscription(Channel channel, IChannelSink sink)
       {
@@ -200,7 +201,10 @@ public ChannelSinkSubscription(Channel channel, IChannelSink sink)
 
       public void Dispose()
       {
-        Channel.RemoveOutputStream(Sink);
+        if (!disposed) {
+          disposed = true;
+          Channel.RemoveOutputStream(Sink);
+        }
       }
     }