DllStructCreate

[txn]

I'm trying to use _WiniInet_HttpQueryInfo to get the headers returned by a server in response to a GET/POST request.

I've got this code but it's not working. What am I doing wrong?

    $iHeaders = Default
    $avHeaders = _WinINet_HttpQueryInfo($hHttpOpenRequest, $HTTP_QUERY_RAW_HEADERS,0)


    If Not @error Then
        ConsoleWriteLog("_WinINet_HttpQueryInfo", @error, @extended, "[" & DllStructGetPtr($avHeaders[0]) & ", " & $avHeaders[1] & "]")

        $iHeaders = DllStructGetData(DllStructCreate("char[1024]" , DllStructGetPtr($avHeaders[0])), 1)


        ConsoleWrite("--> Headers: " & $iHeaders & @CRLF)
    EndIf

I guess I'm not setting the proper struct data type, as the console outputs:

+ _WinINet_HttpQueryInfo: error: 0 extended: 0 return: [0x0166A700, 828] 
--> Headers: H

where "H" is the first char of the headers.

 

Thanks for any help.

Edited October 22, 2013 by txn

[Sundance]

Hi txn,

welcome on board.

Would be better you provide a running example. At first sight I 'don't like' the line

$iHeaders = DllStructGetData(DllStructCreate("char[1024]" , DllStructGetPtr($avHeaders[0])), 1)
 

.

 

See you

Sundance

[txn]

Hi Sundance,
thank you for your reply.
 
Here's the whole code.

 

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#include <WinINet.au3>

Global $hInternetOpen, $hInternetConnect, $hHttpOpenRequest, $hHttpSendRequest
Global $iStartup, $iShutdown, $iInternetAttemptConnect


; start WinINet libary
$iStartup = _WinINet_Startup()
ConsoleWriteLog("_WinINet_Startup", @error, @extended, $iStartup)


; attempt a connection
$iInternetAttemptConnect = _WinINet_InternetAttemptConnect()
ConsoleWriteLog("_WinINet_InternetAttemptConnect", @error, @extended, $iInternetAttemptConnect)


; successful attempt
If $iInternetAttemptConnect Then


    ; open a connection
    $hInternetOpen = _WinINet_InternetOpen("Mozilla/5.0 Firefox/3.0.1", $INTERNET_OPEN_TYPE_PRECONFIG, 0, Default, Default)
    ConsoleWriteLog("_WinINet_InternetOpen", @error, @extended, $hInternetOpen)


    ; connect to a web server
    $hInternetConnect = _WinINet_InternetConnect($hInternetOpen, $INTERNET_SERVICE_HTTP, "www.google.com", 0, 0, Default, Default, 0)
    ConsoleWriteLog("_WinINet_InternetConnect", @error, @extended, $hInternetConnect)


    ; set up a request a file
    $hHttpOpenRequest  = _WinINet_HttpOpenRequest($hInternetConnect, "GET", "/", $INTERNET_FLAG_RELOAD, "HTTP/1.1", Default, Default, 0)
    ConsoleWriteLog("_WinINet_HttpOpenRequest", @error, @extended, $hHttpOpenRequest)


    ; send the request to the http server
    $hHttpSendRequest = _WinINet_HttpSendRequest($hHttpOpenRequest, Default, Default)
    ConsoleWriteLog("_WinINet_HttpSendRequest", @error, @extended, $hHttpSendRequest)




    $iHeaders = Default
    $avHeaders = _WinINet_HttpQueryInfo($hHttpOpenRequest, $HTTP_QUERY_RAW_HEADERS,0)


    If Not @error Then
        ConsoleWriteLog("_WinINet_HttpQueryInfo", @error, @extended, "[" & DllStructGetPtr($avHeaders[0]) & ", " & $avHeaders[1] & "]")


        $iHeaders = DllStructGetData(DllStructCreate("char[1024]" , DllStructGetPtr($avHeaders[0])), 1)


        ConsoleWrite("--> Headers: " & $iHeaders & @CRLF)
    EndIf


; end WinINet library
$iShutdown = _WinINet_Shutdown()
ConsoleWriteLog("_WinINet_Shutdown", @error, @extended, $iShutdown)


EndIf


Func ConsoleWriteLog($vMessage, $iError, $vExtended, $vReturn)
    ConsoleWrite(StringFormat("+ %s: error: %s extended: %s return: %s \r", $vMessage, $iError, $vExtended, $vReturn))
EndFunc

 

It's just a modified version of this example:  which uses _WinINet_HttpQueryInfo to get $HTTP_QUERY_CONTENT_LENGTH and it's working.

Edited October 22, 2013 by txn

[Sundance]

use the following line

$iHeaders = DllStructGetData(DllStructCreate("wchar[" & $avHeaders[1] & "]" , DllStructGetPtr($avHeaders[0])), 1)

But it seems not to be the whole header...

Edited October 22, 2013 by Sundance

[txn]

Now it works, thanks!

[txn]

But it seems not to be the whole header...

 

Sorry Sundance, I didn't notice your edit. Actually it does return the whole header, or at least it contains the "Set-Cookie" header, which is what I was looking for. However I didn't solve my problem yet.

I need my script to authenticate through https to a server which is placed inside my office intranet but it is also routed on the internet.

I managed to get the cookies on my office WinXP pc using winhttp. When I tried at home (windows 7 pc) I couldn't get the cookies in the response headers. I did a serch on google and somebody suggested it may be an issue related to using winhttp on windows 7, so I tried switching to wininet. Alas, the code you suggested works with other sites but not with my office server. So I tested a script using winhttp on windows 7 and it works with said sites.

So I guess the problem is not using winhttp on windows 7, but the server not being accessed on the intranet.