Checking a PDF file exists on a server without downloading

[Hasher]

Hi guys

I want to check if a PDF file exists on a server . I use httprequest to do this at the moment but if it finds the file it downloads which uses a lot of bandwidth. I just want to return a true / false on if it exists or not. Below is my code , can anyone suggest a code edit to do what I need. Thanks for any help in advance.

 

$cat = 8878000
$sTestUrl = "https://www.blah.com/files/" & StringRight(Hex($cat),6) & ".pdf"

With $oHttpRequest
   .SetTimeouts ($ResolveTimeout, $ConnectTimeout, $SendTimeout, $ReceiveTimeout)
   .Open ("GET", $sTestUrl)
   .Send
   Select 
      Case .Status = 200;No problem!
        Local $file = FileOpen("test2.txt", 1)
    fileWrite($file, "https://www.blah.com/files/" & StringRight(Hex($cat),6) & ".pdf" & @CRLF)
    
    $tempFile = "d:\temp\" & StringRight(Hex($cat),6) & ".pdf"



      $temp = fileopen($tempFile,2)
      filewrite($temp,.ResponseBody)
      FileClose($temp)
      FileClose($file)
    
      Case .Status = 404;Not found
        ConsoleWrite($sTestUrl & " could not be found (404 Error)" & @CR)
      Case Else;Some other problem
        ConsoleWrite("An unexpected HTTP Status value was returned: " & .Status & @CR)
   EndSelect
EndWith

 

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InetGetSize ( "URL" )   ???