(AutoIt) Streaming Decrypt HTTP Response

If the an encrypted file was previously uploaded, this example demonstrates how to download and decrypt in a streaming way.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

$oRest = ObjCreate("Chilkat.Rest")

Local $bTls = True
Local $iPort = 443
Local $bAutoReconnect = True
Local $bSuccess = $oRest.Connect("chilkatdownload.com",$iPort,$bTls,$bAutoReconnect)

; Send the request to download a file.
$bSuccess = $oRest.SendReqNoBody("GET","/9.5.0.83/chilkat-9.5.0-python-3.8-x64.zip")
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

; Read the response header.
Local $iResponseStatusCode = $oRest.ReadResponseHeader()
If ($iResponseStatusCode < 0) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Response status code = " & $iResponseStatusCode & @CRLF)

; We expect a 200 response status if the JPG data is coming.
; Otherwise, we'll get a string response body with an error message(or no response body).
If ($iResponseStatusCode <> 200) Then
Local $sErrResponse = $oRest.ReadRespBodyString()
    If ($oRest.LastMethodSuccess <> True) Then
        ConsoleWrite($oRest.LastErrorText & @CRLF)
    Else
        ConsoleWrite($sErrResponse & @CRLF)
    EndIf

    Exit
EndIf

; Create an object for decrypting.
; This example will use "none" for the encryption algorithm, which means it's just a pass-through.
; Typically you would set the decrypt properties, such as secret key, IV, key length, padding scheme, cipher mode..
$oCrypt = ObjCreate("Chilkat.Crypt2")
$oCrypt.CryptAlgorithm = "none"

; The following settings are ignored in this test because our CryptAlgorithm is "none".
; However, if you were truly decrypting, you might set CryptAlgorithm = "aes".
$oCrypt.CipherMode = "cbc"
$oCrypt.KeyLength = 128
$oCrypt.SetEncodedKey "000102030405060708090A0B0C0D0E0F","hex"
$oCrypt.SetEncodedIV "000102030405060708090A0B0C0D0E0F","hex"

$oReceiveStream = ObjCreate("Chilkat.Stream")
; The decryptStream's source will be the receiveStream.
$oDecryptStream = ObjCreate("Chilkat.Stream")

; The decrypt stream's sink will be a file.
$oDecryptStream.SinkFile = "qa_output/chilkat-9.5.0-python-3.8-x64.zip"
$oDecryptStream.SetSourceStream($oReceiveStream)

; Create and run a background async task to decrypt incoming data and write to a file.
Local $oDecryptStreamTask = $oCrypt.DecryptStreamAsync($oDecryptStream)
$bSuccess = $oDecryptStreamTask.Run()

$bSuccess = $oRest.ReadRespBodyStream($oReceiveStream,True)
If ($bSuccess <> True) Then
    ConsoleWrite($oRest.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Successfully received the .zip file." & @CRLF)