Reposting this message from last week since I have not had a reply so
far. Hopefully someone will have an idea?
---

I've been using Dev's fantastic InetTransferLib to upload and download
files via ftp. Now I'm using the http procedures to have my application
download zip files from my website. Although the download process works
OK, it adds a few bytes to the file during the download, so a 46k file
becomes 52k. I can still open the file using Winzip, but cannot open it
using my active X extraction system (ActiveXZip from www.hdse.com). I
get an error 'Bad file format'. This is effectively stopping me using
the ActiveX unzipping process which I need to build into my application
to allow clients to download and install files from my website.

I've tried the same process using ftp and the same thing happens. If I
download using a browser, the file is transferred with no extra bytes
and unzips perfectly using Winzip or ActiveXZip.

Anyone know what could be happening during the download to modify the
zip file? And how to fix it of course.

Owen Jenkins

Looking at the code in the procedure WriteHTTPDataToFile in the HTTP class
the following line looks wrong to me

Call apiWriteFile(hFile, abytData(0), MAX_CHUNK, _
lngBytesWritten, 0&)

I think it should be

Call apiWriteFile(hFile, abytData(0), lngBytesRead, _
lngBytesWritten, 0&)




--
Terry Kreft
MVP Microsoft Access


"Owen Jenkins" <oj (AT) healthbase (DOT) com.au> wrote

Thanks for the tip Terry. This was exactly the answer. It solved the
download and the unzipping problem. It was obvious really (after you
pointed it out!).

I notice that the same 'error' is in the ftp module. Do you think it's
significant enough to change the InetTransferLib module?

I hope this message gets linked to the right thread. The original
dropped off my list in my newsgroup reader and I haven't been able to
log on via Google to send a reply. I've copied the original 2 posts
below.

Thanks again!
Owen Jenkins


Looking at the code in the procedure WriteHTTPDataToFile in the HTTP
class
the following line looks wrong to me


Call apiWriteFile(hFile, abytData(0), MAX_CHUNK, _
lngBytesWritten, 0&)


I think it should be


Call apiWriteFile(hFile, abytData(0), lngBytesRead, _
lngBytesWritten, 0&)


--
Terry Kreft
MVP Microsoft Access


Owen Jenkins Nov 29, 5:14 pm show options

Newsgroups: comp.databases.ms-access
From: Owen Jenkins <o... (AT) healthbase (DOT) com.au> - Find messages by this
author
Date: Tue, 30 Nov 2004 12:14:01 +1100
Local: Mon, Nov 29 2004 5:14 pm
Subject: Repost - InetTransferLib Http download problem with zip files
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original | Report Abuse

Reposting this message from last week since I have not had a reply so
far. Hopefully someone will have an idea?
---


I've been using Dev's fantastic InetTransferLib to upload and download
files via ftp. Now I'm using the http procedures to have my application
download zip files from my website. Although the download process works
OK, it adds a few bytes to the file during the download, so a 46k file
becomes 52k. I can still open the file using Winzip, but cannot open it
using my active X extraction system (ActiveXZip from www.hdse.com). I
get an error 'Bad file format'. This is effectively stopping me using
the ActiveX unzipping process which I need to build into my application
to allow clients to download and install files from my website.


I've tried the same process using ftp and the same thing happens. If I
download using a browser, the file is transferred with no extra bytes
and unzips perfectly using Winzip or ActiveXZip.


Anyone know what could be happening during the download to modify the
zip file? And how to fix it of course.


Owen Jenkins

You could try using the e-mail feedback at th site and see if Dev picks up
on it.

--
Terry Kreft
MVP Microsoft Access


"Owen Jenkins" <oj (AT) healthbase (DOT) com.au> wrote