public/Get-RedirectedURL.ps1

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<#
RePass Cloud Get-RedirectedURL.ps1
Copyright 2020 RePass Cloud Pty Ltd
This product includes software developed at
RePass Cloud (https://repasscloud.com/).
Version: 2.0.2.5
Last Updated: 2020-08-02
#>



function Get-RedirectedUrl {
  param(
      [Parameter(Mandatory=$true, Position=0)]
      [Uri] $Url,
      [Parameter(Position=1)]
      [Microsoft.PowerShell.Commands.WebRequestSession] $Session=$null
  )

  $request_url=$Url
  $retry=$false

  do {
      try {
          $response=Invoke-WebRequest -Method Head -WebSession $Session -Uri $request_url -UseBasicParsing
          if ($null -ne $response.BaseResponse.ResponseUri) {
              # PowerShell 5
              $result=$response.BaseResponse.ResponseUri.AbsoluteUri
          } elseif ($null -ne $response.BaseResponse.RequestMessage.RequestUri) {
              # PowerShell Core
              $result=$response.BaseResponse.RequestMessage.RequestUri.AbsoluteUri
          }
          $retry=$false
      } catch {
          if ( ($_.Exception.GetType() -match "HttpResponseException") -and ($_.Exception -match "302") ) {
              $request_url=$_.Exception.Response.Headers.Location.AbsoluteUri
              $retry=$true
          } elseif ( ($_.Exception.GetType() -match "HttpResponseException") -and ($_.Exception -match "403") ) {
              $result=($request_url).OriginalString
              $retry=$false
          } else {
              throw $_
          }
      }  
  }
  while($retry)

  return $result
  [System.GC]::Collect()
}