A powershell script that can be used to check if a site is up and running, full description can be found at: http://faces.eti.br/2011/07/28/checking-website-status-with-powershell/

site_checker.ps1

function Show-MessageBox ($title, $msg) {     
    [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | Out-Null 
    [Windows.Forms.MessageBox]::Show($msg, $title, [Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Warning, [System.Windows.Forms.MessageBoxDefaultButton]::Button1, [System.Windows.Forms.MessageBoxOptions]::DefaultDesktopOnly) | Out-Null     
} 

[string] $url = 'http://www.saidosofa.com.br'

[net.httpWebRequest] $req = [net.webRequest]::create($url)
$req.Method = "HEAD"

[net.httpWebResponse] $res = $req.getResponse()

if ($res.StatusCode -ge "200") {
  write-host "`nSite up`n" `
    -foregroundcolor green
}
else {
  Show-MessageBox -title "Warning!" -msg "Site down!!!"
  write-host "`nSite down`n" `
    -foregroundcolor red
}

Hey may you can help me, I used this script, but when I check a page where I knew it's down, I'll get an Exception but why?

Exception calling "GetResponse" with "0" argument(s): "The underlying connection was closed: An unexpected error occurred on a receive."

• $HTTP_Response = $HTTP_Request.GetResponse <<<< ()
  • CategoryInfo : NotSpecified: (:) [], MethodInvocationException
  • FullyQualifiedErrorId : DotNetMethodException
    How can I solved it?

Thanks
Cheers