server.keepAliveTimeout

• 类型：<number> 超时（以毫秒为单位）。默认值：5000（5 秒）。

  ¥Type: <number> Timeout in milliseconds. Default: 5000 (5 seconds).

在完成写入最后一个响应之后，在套接字将被销毁之前，服务器需要等待额外传入数据的不活动毫秒数。如果服务器在 keep-alive 超时触发之前收到新数据，则将重置常规的不活动超时，即 server.timeout。

¥The number of milliseconds of inactivity a server needs to wait for additional incoming data, after it has finished writing the last response, before a socket will be destroyed. If the server receives new data before the keep-alive timeout has fired, it will reset the regular inactivity timeout, i.e., server.timeout.

值 0 将禁用传入连接上的保持活动超时行为。值 0 使 http 服务器的行为类似于 8.0.0 之前的 Node.js 版本，后者没有保持活动超时。

¥A value of 0 will disable the keep-alive timeout behavior on incoming connections. A value of 0 makes the http server behave similarly to Node.js versions prior to 8.0.0, which did not have a keep-alive timeout.

套接字超时逻辑是在连接上设置的，因此更改此值只会影响到服务器的新连接，而不会影响任何现有连接。

¥The socket timeout logic is set up on connection, so changing this value only affects new connections to the server, not any existing connections.