【bug】webman/push 刷新后就无法接收消息

function createChannel(channel_name, push) {
  var channel = new Channel(push.connection, channel_name);
  push.channels[channel_name] = channel;
  channel.subscribeCb = function () {
    push.connection.send(JSON.stringify({ event: 'pusher:subscribe', data: { channel: channel_name } }));
  };
  channel.processSubscribe(); //加上这一行
  return channel;
}