All posts by Michael Albert

VMware Workstation: Using the REST api with powershell

Hi,

the most did not know that VMware Workstation has a API interface to dealing with it.
Continue reading VMware Workstation: Using the REST api with powershell

Powershell: Get the certificate of a webserver

Hi,

like openssl s_client you can also use powershell to view/get the certificate of a webserver.
Continue reading Powershell: Get the certificate of a webserver

Powershell: Invoke-WebRequest aborts with httpcode 301/308 permanent redirect

Hi,

the powershell command-let Invoke-WebRequest does not follow an http redirect.

The solution is to call Invoke-WebRequest recursivly with the redirect URL from the location header field when http code 301 or 308 is returned.

$sURL = "https://visualstudio.com/"
$sRedirectTo=$null
do {
    $oWebResponse = $null
    try
    {
        $oWebResponse = Invoke-WebRequest $sURL 
    }
    catch 
    {
        $oWebResponse=$_.Exception.Response
        write-host ("Exception: {0}" -f $_.Exception.Message)
    }
	if($oWebResponse.StatusCode -ne 200)
	{
		$aRedirectTo=$oWebResponse.Headers.GetValues("location")
		if($aRedirectTo.Count -ge 1)
		{
			$sRedirectTo=$aRedirectTo[0]
		}
		else
		{
			write-host ("No location URL in header")
			break
		}
		if (-not [string]::IsNullOrEmpty($sRedirectTo))
		{
			write-host ("Redirect to {0}" -f ($sRedirectTo))
			$sURL = $sRedirectTo
		}
		else
		{
			write-host ("location URL Null")
			break
		}
	}
    else
    {
        Write-Output ("OK Location = {1} HttpCode = {0}" -f $oWebResponse.StatusCode,$sRedirectTo )
        break
    }
	
} 
while ($true)

Michael

Visual Studio: Set proxy server for update

Hi,

the update process of Visual Studio uses the .NET class Webclient which takes not care about the proxy set by Internet Explorer or Edge.
Continue reading Visual Studio: Set proxy server for update

vSphere VCSA: Cannot add a (http) https proxy


Hi,

with the VCSA Gui it is not possible to to enter a http proxy for https target URLs. An error: HTTPS Cannot connect to proxy server occurs.

The most linux tools accept http URLs in the HTTPS_PROXY variable and this also works with the VCSA.
Continue reading vSphere VCSA: Cannot add a (http) https proxy