PowerShell Invoke-RestMethod超时

Question

我检查一些许多服务(环行交叉口15)是否有通过PowerShell命令提供的服务。如果服务可用，则脚本运行时间良好，但如果某些服务不可用，则脚本运行时间不佳！那么如何确定Invoke-RestMethod具有特定的请求/响应时间呢？我知道有一个参数-TimeoutSec。例如，如果我在4秒后没有得到响应，请求超时并抛出错误！

Invoke-RestMethod $uri -TimeoutSec

也许我误解了参数-TimeoutSec

Answer 1

根据帮助：

> get-help Invoke-RestMethod -Parameter Timeoutsec

-TimeoutSec <Int32>
    Specifies how long the request can be pending before it times out. Enter a value in seconds. The default value, 0, specifies an indefinite time-out.

因此，该参数需要一个整数来表示超时应该有多长。

Invoke-RestMethod $uri -TimeoutSec 4

请注意帮助中的警告：

A Domain Name System (DNS) query can take up to 15 seconds to return or time out. If your request contains a host name that requires resolution, and you set TimeoutSec to a value greater than zero, but less than 15 seconds, it can take 15 
seconds or more before a WebException is thrown, and your request times out.