I have quite a similar problem, as yet not fully resolved, but maybe I can shed some light on this.
 
We are occasionally transferring files with WS_FTP over a VPN connection to a webserver.
 
a) When connected to the internet with a cable connection or modem connection, there are no problems.
b) But when connected to the internet with a DSL connection, we can only upload certain filetypes!
For instance, we can upload .HTML and .TXT files of any size, but we can't upload .PDF, .DOC, .GIF! This phenomenon applies to files of a certain size. Files with up to 2 KB can be transferred, files > 2 KB can't be transferred - the process just stops in the middle.
On the server where the file is transferred to, the file is actually created, but with 0 KB size.
The problems occur no matter if text mode or binary mode is activated.
By the way, when I try to transfer these files not by FTP but by simply copying them over shared windows folders, the same problem occurs.
 
As far as I researched so far, maybe the MTU size is to blame (in some countries, some DSL connections are established over VPN; at least in Austria, where I am from; when you establish another VPN connection, the MTU size drops further.)
Try reducing the MTU size on your local machine and your router.
 
Best wishes,
 
George
 
----- Original Message -----
Sent: Saturday, February 07, 2004 12:26 AM
Subject: RE: [WS_FTP Forum] Problems uploading PDF

Are you transferring in binary mode or text mode?, If you�re transferring in text mode try binary

 

Frank Nicholson

Production Control Developer (-2)

Electronic Network Systems Inc.

Phone: (719) 457-8358

Email : [EMAIL PROTECTED]

 

 

-----Original Message-----
From: Amy Silvey [mailto:[EMAIL PROTECTED]
Sent: Friday, February 06, 2004 4:02 PM
To: [EMAIL PROTECTED]
Subject: [WS_FTP Forum] Problems uploading PDF

 

Hello,

Any advice/help would be great. I have been trying to upload a PDF file to a website and it only transfers about half of the document. I�ve uploaded the same PDF file before and it worked fine so I�m puzzled why the document won�t upload this time.

Any ideas?

 

Thanks!

 

 

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