Opened 15 years ago

Closed 15 years ago

#3776 closed Bug report (rejected)

Download of file resumes after completed to download more than 100%

Reported by: Shawn Owned by:
Priority: normal Component: FileZilla Client
Keywords: Cc:
Component version: Operating system type: Windows
Operating system version:


I have a Windows 2003 FTP server that I connect to and download files from on a regular basis. Recently when I download compressed files (zip, 7z, etc) with FileZilla it downloads more than 100%. The process is as follows

  • Connect to server
  • Browse to folder
  • Add 2 or more files to queue (I have 2 concurrent downloads enabled)
  • Files download
  • Download progress reaches 100%
  • Download completes and then resumes and continues download until I force a cancel (I have seen it download 3x the original file size)

Here is a snippet from the FTP log:

Status: Starting download of /sanderson/cdrive/StorageViz/
Command: CWD /sanderson/cdrive/StorageViz
Response: 250 CWD command successful.
Command: TYPE I
Response: 200 Type set to I.
Command: PASV
Response: 227 Entering Passive Mode (208,201,252,30,19,151).
Command: REST 52663998
Response: 350 Restarting at 52663998.
Command: RETR

If you notice the "restarting" line -- that byte count is the actual file size of the completed download.

Note: I have tried with with a client of Windows XP and Vista

Change History (6)

comment:1 by Tim Kosse, 15 years ago

Resolution: rejected
Status: newclosed

You are using a Microsoft FTP Server. Those are horribly broken. They actively advertise support for the REST command (resume support), accept REST commands yet still silently ignore them.

You need to upgrade to a proper server.

comment:2 by Shawn, 15 years ago

I am curious as to why it is not possible to do a sanity check between the file size locally and the file size on the server. Wouldn't this resolve the issue.

While I understand what you are saying about Windows -- it is still one of the most used operating systems around, so it is a little hard to get away from.

comment:3 by Shawn, 15 years ago

Resolution: rejected
Status: closedreopened

comment:4 by Tim Kosse, 15 years ago

Resolution: rejected
Status: reopenedclosed

The remote filesize information is unreliable. If a transfer fails for whatever reason (as is the case with your transfers), it has to be resumed.

The only way to fix this is for you to upgrade to a better server.

comment:5 by scott carl, 15 years ago

Resolution: rejected
Status: closedreopened

I am getting the same behavior using both iis and GlobalScape ftp servers. In addition, I get the same behavior using ws_ftp, curl, and wget.

comment:6 by Tim Kosse, 15 years ago

Resolution: rejected
Status: reopenedclosed

If you get the same behavior with other clients, it is definitely not a but in FileZilla.

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