server.keepAliveTimeout

• 类型：<number> 超时（毫秒）。默认值： 5000（5 秒）。

服务器在完成最后一次响应的写入后，需要等待额外传入数据的空闲毫秒数，然后套接字将被销毁。

【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.】

此超时值与server.keepAliveTimeoutBuffer选项结合使用以确定实际的套接字超时，计算公式为： socketTimeout = keepAliveTimeout + keepAliveTimeoutBuffer 如果服务器在保持活动超时触发之前接收到新数据，它将重置常规的不活动超时，即server.timeout。

【This timeout value is combined with the server.keepAliveTimeoutBuffer option to determine the actual socket timeout, calculated as: socketTimeout = keepAliveTimeout + keepAliveTimeoutBuffer If the server receives new data before the keep-alive timeout has fired, it will reset the regular inactivity timeout, i.e., server.timeout.】

将值设置为 0 会禁用对传入连接的 keep-alive 超时行为。 将值设置为 0 会使 HTTP 服务器的行为类似于 8.0.0 之前的 Node.js 版本，这些版本没有 keep-alive 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时设置的，因此更改此值只会影响与服务器的新连接，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.】