“请求超时。客户端没有在服务器预备等待的时间内完成一个请求的发送。客户端可以随时再次提交这一请求而无需进行任何更改。“ — wikipedia

“The client did not produce a request within the time that the server was prepared to wait. The client MAY repeat the request without modifications at any later time.“ — ietf