Microsoft.AspNet.SignalR.Redis.RedisMessageBus.OnMessage C# (CSharp) Method

        private void OnMessage(int streamIndex, RedisMessage message)
        {
            // locked to avoid overlapping calls (even though we have set the mode 
            // to preserve order on the subscription)
            lock (_callbackLock)
            {
                OnReceived(streamIndex, message.Id, message.ScaleoutMessage);
            }
        }