Dent

How to download uniquely generated PDF?

20 posts in this topic

Hi everyone,

My script uses IE11 on Win7 to log in to a site and enters data into a couple of forms. Upon clicking a link this data is used by the site to generate a PDF report.

With my current set-up if I do this manually the PDF opens in a new IE tab and I can download or print it. If I right-click the link that creates the PDF and choose Save Target As the PDF is generated and the Open/Save As dialogue at the bottom of the screen opens. All good.

However I would like the script to automatically download the PDF and close IE and then exit. Closing IE (_IEQuit) and exiting the script are easy enough, but I'm struggling getting the script to download the PDF.

The link to generate the PDF contains a unique number each time the page with the link is reached, so it's not static. The link position however, using _IELinkGetCollection I can tell the link to generate the PDF is always the 10th one from the end of the page, so using $iNumLinks - 10 I am able to click the link.

What I believe I need to use is InetGet however the problem I've been facing is that the link isn't static and I haven't worked out a way to access the link by index - is this possible?

Here is the website HTML for the section containing the link although I don't think it's of much use but it at least shows the format of the link (I can't post a link as it's a password protected area)...

<div class="rmButton right"><a title="Generates a PDF version of the market report in a new window." href="/rmplus/generatePdf?mr_id=60991" target="_blank">print/save as pdf</a></div>

The full link https://www.rightmove.co.uk/rmplus/generatePdf?mr_id=60991 just for completeness - visiting it will give a HTTP 500 unless logged in.

And here is the code that clicks this link opening the generated PDF in a new tab...

$oLinks = _IELinkGetCollection($oIE)
$iNumLinks = @extended
$PrintPDF = _IELinkClickByIndex($oIE, ($iNumLinks - 10))

So, how to use InetGet to visit that link? Or is there a way to Save As the newly opened tab? I've tried _IEAction($oIE, "saveas") but it seems not to work in a tab containing only a PDF.

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7 minutes ago, Dent said:

The full link https://www.rightmove.co.uk/rmplus/generatePdf?mr_id=60991 just for completeness - visiting it will give a HTTP 500 unless logged in.

 

This is what I get when I click this link:

Quote

Sorry

Sorry there is a problem

Reference No #2301-161111-100642-10401

 


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Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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Two ways (first method is easier):

- download all the page content with _IEBodyReadHTML and retrieve your mr_id through regular expressions (StringRegExp)

- use .getattribute method to retrieve href attribute in the div with "Generates a PDF version of the market report in a new window." a title attribute.

Then you can build full link and use InetGet to download the file.

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HREF is not pointing directly to PDF file , so I'm not sure if InetGet will work.

 


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IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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Thank-you both for your input.

j0kky, I was really hoping your first method would work - I don't know why I didn't think of this, but I have a habit of coding whilst tired.

So I used StringInStr and StringMid etc to obtain the actual link, here's the code...

$Page = _IEBodyReadHTML($oIE)
$PrintPDFStart = StringInStr($Page, "?mr_id=")
$PrintPDFEnd = StringMid($Page, $PrintPDFStart, 12)
$PrintPDF = ("https://www.rightmove.co.uk/rmplus/generatePdf" & $PrintPDFEnd)
$hDownload = InetGet($PrintPDF, @ScriptDir & "\Report.pdf")
Do
    Sleep(250)
Until InetGetInfo($hDownload, 2)
InetClose($hDownload)

I checked the result of $PrintPDF to be sure the URL is 100% correct, which it is, but unfortunately the script just hangs. mLipok you were right :(

I haven't tried your second method as I also don't see this working as I think the problem is with InetGet()

I think the answer may lie in trying to save the PDF from the newly created IE tab.

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Q1

In this new tab can you manualy Save this pdf file ? I want to know the file name.

Q2

When this new tab is open , how You close them ?

 

Ps.

Long time ago I had the same problem 

 


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My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

Signature last update: 2017-06-04

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Hi mLipok and thanks for replying again.

Q1. In the new tab which just has the title 'rightmove.co.uk' I can manually save the pdf and the filename is 'generatePDF.pdf' but I haven't been able to save it using AutoIt yet.

Q2. I have only been able to close the tab manually, I have tried _IEAttach to the new tab and then _IEQuit but it doesn't work. I think I would need to interact with the interface by simulating a mouse-click.

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I think I have solution to Q1.

But I'm not able to find it quickly .

 

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My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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I think part of the issue is that you didn't indicate that InetGet should download the file in the background. The revised code should look like

$hDownload = InetGet($PrintPDF, @ScriptDir & "\Report.pdf", $INET_FORCERELOAD, $INET_DOWNLOADBACKGROUND)
Do
    Sleep(250)
Until InetGetInfo($hDownload, 2)

The other issue that you are likely running into is that the InetGet will fail due to security reasons. In the past, I have resolved this by _IECreateEmbedded within a hidden GUI so that the web browser is running in the same context as the script.

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8 hours ago, Danp2 said:

I think part of the issue is that you didn't indicate that InetGet should download the file in the background. The revised code should look like

$hDownload = InetGet($PrintPDF, @ScriptDir & "\Report.pdf", $INET_FORCERELOAD, $INET_DOWNLOADBACKGROUND)
Do
    Sleep(250)
Until InetGetInfo($hDownload, 2)

The other issue that you are likely running into is that the InetGet will fail due to security reasons. In the past, I have resolved this by _IECreateEmbedded within a hidden GUI so that the web browser is running in the same context as the script.

Thanks Danp2, it could be a context thing, InetGet doesn't return an error it just hangs. I don't think I'll be able to sniff the connection either as it's SSL.

I tried your variation above and the same thing happens. InetRead at least does return that 0 bytes have been read so I guess it is getting blocked.

Maybe using IUAutomation is the way and actually controlling the new tab that is created when the link is clicked - but I've never used that UDF.

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10 hours ago, mLipok said:

I think I have solution to Q1.

But I'm not able to find it quickly .

 

Something like this:

_Example()
Func _Example()
    Local $sIECacheDir = _IE_GetCacheDir()
    Local $aKatalogi = _FileListToArrayRec($sIECacheDir, 'generatePDF*.pdf', 1, 1, 0, 2)
EndFunc


Func _IE_GetCacheDir()
    Local $sIECacheDir = RegRead('HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\', 'Cache')
    $sIECacheDir = StringReplace($sIECacheDir, '%USERPROFILE%', @UserProfileDir)
    Return SetError(0, 0, $sIECacheDir)
EndFunc   ;==>_IE_GetCacheDir

 


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Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST API *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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11 hours ago, Dent said:

Q2. I have only been able to close the tab manually, I have tried _IEAttach to the new tab and then _IEQuit but it doesn't work. I think I would need to interact with the interface by simulating a mouse-click.

Can you post here HTML snippet with this second IE tab ?
_IEAttach works ?
Try to change IE content before Quit, just like that:

Local _IEAttach(......
    $sHTML = _
            "<HTML>" & @CRLF & _
            "<HEAD>" & @CRLF & _
            "<TITLE>Empty Page</TITLE>" & @CRLF & _
            "</HEAD>" & @CRLF & _
            "</HTML>" & _
            ""
    _IEDocWriteHTML($oIE, $sHTML)
    _IEQuit($oIE)

 


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Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST API *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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The new IE tab that is created just displays the pdf so I cannot control it with any _IE functions and there is no HTML source to view.

I think I'll have to control the window in some other way :(

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8 minutes ago, Dent said:

displays the pdf so I cannot control it with any _IE functions and there is no HTML source to view.

Are you sure ?

Try this:

#include <IE.au3>

_Example()
Func _Example()
    Local $sURL = 'http://lipok.pl/test_pdf/nicniewidac.html'

    Local $oIE = _IECreate($sURL)
    Local $sHTML = _IEDocReadHTML($oIE)
    MsgBox(0, '', $sHTML)

    $sHTML = _
            "<HTML>" & @CRLF & _
            "<HEAD>" & @CRLF & _
            "<TITLE>Empty Page</TITLE>" & @CRLF & _
            "</HEAD>" & @CRLF & _
            "</HTML>" & _
            ""

    _IEDocWriteHTML($oIE, $sHTML)

EndFunc   ;==>_Example

 

When this MsgBox PopUp try to use F12 (I know do not not works), but then try Developers Tools from IE Menu >>  Tool's

 

 

43 minutes ago, Dent said:

The new IE tab that is created just displays the pdf so I cannot control it with any _IE functions

Here is another interesting example:

 


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Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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Did you try my snippet from #13

??

btw.
If I'm thinking correctly you can use :

using one of this:
_WinINet_FindFirstUrlCacheEntryEx
_WinINet_FindNextUrlCacheEntryEx
_WinINet_FtpCommand
_WinINet_InternetFindNextFile

 


Signature beginning:   Wondering who uses AutoIT and what it can be used for ?
* GHAPI UDF - modest begining - comunication with GitHub REST API *
ADO.au3 UDF     POP3.au3 UDF     XML.au3 UDF    How to use IE.au3  UDF with  AutoIt v3.3.14.x  for other useful stuff click the following button

Spoiler

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAP * WinSCP UDF * GHAPI UDF - modest begining - comunication with GitHub REST API *

My contribution to others projects or UDF based on  others projects: * _sql.au3 UDF  * POP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities * _IEquerySelectorAll() (by uncommon) * 

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

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Would anyone be able to VNC into my machine and try to resolve this?

I would happily give the login details out but there is an email verification process that means I would need to be involved, if you VNC to my machine it is already configured correctly.

mLipok, yes I tried your snippet from #13 but it didn't work.

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Another option, for whatever it's worth, would be to use WinHttp. Forum thread here.

1 person likes this

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#20 ·  Posted (edited)

Quick example (from here):

#include "WinHttp.au3"
Global $hOpen = _WinHttpOpen()
Global $hConnect = _WinHttpConnect($hOpen, 'daveismyname.com')
Global $hRequest = _WinHttpOpenRequest($hConnect, 'POST', '/demos/formpdf/', Default, 'https://daveismyname.com/demos/formpdf/')
_WinHttpSendRequest($hRequest, 'Content-Type: application/x-www-form-urlencoded', 'name=Dent&email=dent%40wayfarer.com&submit=Submit')
_WinHttpReceiveResponse($hRequest)
If _WinHttpQueryDataAvailable($hRequest) Then
    Global $sHeaders = _WinHttpQueryHeaders($hRequest)
    Global $sFile = @ScriptDir & '\' & StringRegExpReplace($sHeaders, '(?si).*filename="(\S+)".*', '$1')
    Global $dChunk, $dData
    While 1
        $dChunk = _WinHttpReadData($hRequest, 2)
        If @error Then ExitLoop
        $dData = _WinHttpSimpleBinaryConcat($dData, $dChunk)
    WEnd
    Global $hFile = FileOpen($sFile, 26)
    FileWrite($hFile, $dData)
    FileClose($hFile)
    If Not FileExists($sFile) Then MsgBox(48, "Error occurred", "No file created." & @CRLF)
    ShellExecute($sFile)
Else
    MsgBox(48, "Error occurred", "No data available." & @CRLF)
EndIf
_WinHttpCloseHandle($hRequest)
_WinHttpCloseHandle($hConnect)
_WinHttpCloseHandle($hOpen)

 

Edited by GMK
Correct code; add link
2 people like this

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