Download File through proxy server

Question

_{Tuesday, June 19, 2012 6:17 AM}

Hello !

I try to download file from site to my hardisk by PowerShell script through non-MS proxy with domain autorization.

$source = "http://mysite.ru/file.txt"
$dest = "c:\file.txt"
$WebClient = New-Object System.Net.WebClient
$WebProxy = New-Object System.Net.WebProxy("http://proxyserver:port",$true)
$WebProxy.Credentials = New-Object Net.NetworkCredential("user","password","domain.local")
$WebClient.Proxy = $WebProxy
$WebClient.DownloadFile($source,$dest)

But, when I start this script, I get the error: The request failed with HTTP status 407: Proxy Authentication Required.

I read the System.Net.WebClient reference and found that Proxy property have a type IWebProxy. But when I try $WebClient = New-Object System.Net.IWebProxy("http://proxyserver:port",$true), I get the message that PowerShell can't find constructor of System.Net.IWebProxy.

How can I do it right ?

Andy Mishechkin

All replies (3)

_{Thursday, June 21, 2012 11:19 AM ✅Answered | 3 votes}

The problem is solved:

$source = "http://site.com/file.txt"
$dest = "C:\file.txt"
$WebClient = New-Object System.Net.WebClient
$WebProxy = New-Object System.Net.WebProxy("http://myproxy.com:1111",$true)
$Credentials = New-Object Net.NetworkCredential("user,"","domain.local")
$Credentials = $Credentials.GetCredential("http://myproxy.com","1111", "KERBEROS");
$WebProxy.Credentials = $Credentials
$WebClient.Proxy = $WebProxy
$WebClient.DownloadFile($source,$dest)

Andy Mishechkin

_{Tuesday, June 19, 2012 7:15 AM}

Hi Andy,

Your script works for me. Only when I put wrong crentials I get your erros.
PS. I have too non-MS proxy and I put only user and password witout domain:

$WebProxy.Credentials = New-Object Net.NetworkCredential("user","password","")

_{Tuesday, June 19, 2012 10:07 AM}

Possibly I get the error because my proxy (Squid 3.1.16) using the Kerberos for autorization 

Andy Mishechkin