ActionCable订阅方法-一致地广播消息

Question

我要在频道的subscribed方法中广播消息，如下所示：

def subscribed
  stream_from 'results_channel'
  ActionCable.server.broadcast('results_channel', "Test Confirmation")
end

问题在于广播无法偶尔发生。发生这种情况时，控制台输出如下：

[ActionCable] Broadcasting to results_channel: "Test Confirmation"
ResultsChannel is transmitting the subscription confirmation
ResultsChannel is streaming from results_channel

成功传输后，输出如下：

[ActionCable] Broadcasting to results_channel: "Test Confirmation"
ResultsChannel is streaming from results_channel
ResultsChannel is transmitting the subscription confirmation
ResultsChannel transmitting "Test Confirmation" (via streamed from results_channel)

为了成功广播，控制台输出中会有一些变化。但是，对于缺少的广播，控制台会丢失行ResultsChannel transmitting "Test Confirmation" (via streamed from results_channel)。

这是意外行为吗？有没有办法确保广播消息是通过订阅发送的（或者我应该在客户端上使用connected函数）？