'listening' 事件

• address <Object>

类似于 cluster.on('listening') 事件，但特定于此工作进程。

cluster.fork().on('listening', (address) => {
  // 工作进程正在监听
});

它不会在工作进程中触发。

• address <Object>

Similar to the cluster.on('listening') event, but specific to this worker.

cluster.fork().on('listening', (address) => {
  // Worker is listening
});

It is not emitted in the worker.