ftp problem

[JerzyR]

I downloaded a big file (4GB) from ftp server using TC 6,03a.
When I had about 2,7GB the connection was broken and I tried to download it again - resume aborted download - and then I receive "source and target different"
What can it be? I try to download it again and the problem exists again (I'm not sure if the downloaded part of file is also 2,7GB as last time).
Is it a problem with TC or with FTP server (serv-u v4.0).

JerzyR

[ghisler(Author)]

Please create a log and send it to me by e-mail (or post it here). Also check with Alt+Enter whether the file sizes are shown correctly.

[JerzyR]

I divided the file into little ones (30MB*88 files) and then downloaded.
Where can I find the log or how create it?

JerzyR

[Clo]

Hi !

- Configuration >> FTP >> tick the box and fill the field for “Create a log file”
- This is explained in the Help and the Tutorial…

 Kind regards,
Claude
Clo

[JerzyR]

but I can't create log file from "the past" I'm not going to download 2,7GB - sorry Christian (I have 1 Mbit ADSL only)

JerzyR

[ghisler(Author)]

No, I just mean a log of the failing resume operation!

[PET]

Hello,

sorry for bumping this old topic but I'm having the same problem. Never had it before.

Downloading a 6gb file. I canceled. I wanted to resume but I get that error "source and target different".

This is the FTP log file:

200 Port command successful.
REST 2985390080
350 REST supported. Ready to resume at byte offset 2985390080.
RETR rld-acrr.iso
150 Opening data connection for rld-acrr.iso (6899040256 bytes).
Download
òABOR
426 Cannot retrieve. Failed. Aborting
Waiting for server...
226 ABOR command successful.

[PET]

I canceled the file, started again, same problem.

I tried another file, after 3GB, got the same problem.

[PET]

IT's a server thing... I tried with other FTP and I got this:

Error: Server does not support resume of files > 2GB.
Error: Critical error

[ghisler(Author)]

Seems like the server never actually builds up the connection. Try using passive mode: Ctrl+F - edit connection - passive mode.

If this doesn't help, you may ask your provider to update the server. It's possible that it cannot handle file sizes > 2 GB correctly when resuming (it needs to use 64-bit numbers as TC does).

[PET]

well, FileZilla told me that the sever dosn't support resume for files over 2GB.

Suggestion, can't you make Total Commander to give a more... exact error than "source and target different". It's a bit... general and confusing.

Thanks

[ghisler(Author)]

"source and target different" is shown when the server DOES send data, but the WRONG one. When you resume a download, TC downloads an overlapping part of the file, and compares it with the end of the file which is already there. If the two do not match, TC knows that the server failed to resume at the right location, or the remote file was replaced by a newer one in the meantime.

FileZilla told me that the sever dosn't support resume for files over 2GB

That's very unfortunate - they should at least return an error instead of confirming the resume...

[krasusczak]

Hi Christian can i turn this "TC downloads an overlapping part of the file, and compares it with the end of the file which is already there" function OFF????

I need to resume download but i have still this check function i know that files are different & it's how it suppose be...://

[ghisler(Author)]

2krasusczak
No you can't. Resume doesn't make sense when the source and target files are different (e.g. because there is a newer version since the first, partial download). The resumed file would be a mix of the old and new file, and would most probably not work. You will need to choose "Overwrite" instead of "Resume".

[krasusczak]

can you tell me how much exactly additional data it download in backward?