服务器：Windows Server 2008 R2 Powershell版本：3.0

出现以下错误：

Exception calling "GetRequestStream" with "0" argument(s): "The remote server 
returned an error: (504) Gateway Timeout."
At C:\Automic\Agents\Powershell\TEMP\JCGLXYHY.TXT.ps1:181 char:1
+ $requestStream = [System.IO.Stream]$request.GetRequestStream()
    + CategoryInfo          : NotSpecified: (:) [],MethodinvocationException
    + FullyQualifiedErrorId : WebException

[byte[]]$bytes = [System.Text.Encoding]::UTF8.GetBytes($data)
$request.ContentLength = $bytes.Length
$requestStream = [System.IO.Stream]$request.GetRequestStream()
$requestStream.write($bytes,$bytes.Length)
$requestStream.flush()
$requestStream.close()
try {
    $response = $request.GetResponse()
    $reader = [IO.StreamReader] $response.GetResponseStream()

    #Our response will always be xml except in 404/401 case so cast as such
    $responseXML = $reader.ReadToEnd()
    #$responseXML
    $respXMLDoc = [XML] $responseXML

相同的代码在同一用户的不同机器上工作。