Downloading Large files Stops and then Starts Again

Hi,

Since upgrading to V3 I have had a problem with downloading larger files. The transfer begins and then stops. After a minute or so it starts again for a short while and then stops again. This happens all the way through the download.

Anyone else experienced this?

Mike

Version info...
+- System -----------------------------
Microsoft Windows XP Professional
Service Pack 2 (Build 2600)

CPU Speed : 1830 MHz
Total Memory : 2038 MB
Free Memory : 1192 MB

+- SmartFTP ---------------------------
Version : 3.0.1024.25
Time Stamp : 2008-11-16 15:19:20
Platform : x86
Id : 400057494
Days in use : 576

+- Application DLL --------------------
sfFTPLib.dll : 1.5.15.2
sfFavorites.dll : 1.0.20.25
sfFavoritesShellExtension.dll : 1.0.1.19
sfTransferQueue.dll : 1.0.17.25
sfFTPShellExtension.dll : 1.0.15.25
SmartFTPPS.dll : 3.0.1024.25

+- Language ---------------------------
SmartFTP.exe : 3.0.1024.25

+- Internet Explorer ------------------
Version : 7.0.5730.11

+- Winsock ----------------------------
Winsock : 2.2

Log output...
[18:03:57] Initializing. Transfer Queue v1.0.17.25.
[18:03:57] Resolving host name "ftp.my_domain.com"
[18:03:57] Connecting to 85.118.236.24 Port: 21
[18:03:57] Connected to ftp.my_domain.com.
[18:03:57] 220 ProFTPD 1.3.0a Server (Main FTP Server) [85.118.236.24]
[18:03:57] USER talkingo
[18:03:57] 331 Password required for talkingo.
[18:03:57] PASS (hidden)
[18:03:57] 230 User talkingo logged in.
[18:03:57] SYST
[18:03:57] 215 UNIX Type: L8
[18:03:57] Detected Server Type: UNIX
[18:03:57] RTT: 12.049 ms
[18:03:57] FEAT
[18:03:57] 211-Features:
[18:03:57] MDTM
[18:03:57] REST STREAM
[18:03:57] SIZE
[18:03:57] 211 End
[18:03:57] PWD
[18:03:57] 257 "/" is current directory.
[18:03:57] CWD /my_domain/source_dir
[18:03:57] 250 CWD command successful
[18:03:57] PWD
[18:03:57] 257 "/my_domain/source_dir" is current directory.
[18:03:57] TYPE I
[18:03:57] 200 Type set to I
[18:03:57] SIZE my_file.mov
[18:03:57] 213 335965900
[18:03:57] MDTM my_file.mov
[18:03:57] 213 20081113191920
[18:03:57] PASV
[18:03:57] 227 Entering Passive Mode (85,118,236,24,137,193).
[18:03:57] Opening data connection to 85.118.236.24 Port: 35265
[18:03:57] RETR my_file.mov
[18:03:57] 150 Opening BINARY mode data connection for my_file.mov (335965900 bytes)
[18:05:06] Transfer Timeout (60s). Closing data connection.
[18:05:06] 7527760 bytes transferred. (107 KB/s) (00:01:08)
[18:05:06] 426 Transfer aborted. Data connection closed.
[18:05:06] MDTM my_file.mov
[18:05:06] 213 20081113191920
[18:05:06] Transfer failed.
[18:05:06] Initializing. Transfer Queue v1.0.17.25.
[18:05:06] SIZE my_file.mov
[18:05:06] 213 335965900
[18:05:06] MDTM my_file.mov
[18:05:06] 213 20081113191920
[18:05:06] Source File: Size=335965900, SizeUnit=Byte, Time=2008-11-13T19:19:20, TimeFormat=Exact
[18:05:06] Destination File: Size=7527760, SizeUnit=Byte, Time=2008-11-13T19:19:20, TimeFormat=Exact
[18:05:06] RecentTime=2008-11-16T18:05:06
[18:05:06] Rule "IF Destination Time=Equal AND Size=Smaller AND Transfer=No Matter THEN Resume" matched. Action="Resume".
[18:05:06] PASV
[18:05:06] 227 Entering Passive Mode (85,118,236,24,138,4).
[18:05:06] Opening data connection to 85.118.236.24 Port: 35332
[18:05:06] REST 7527760
[18:05:06] 350 Restarting at 7527760. Send STORE or RETRIEVE to initiate transfer
[18:05:06] RETR my_file.mov
[18:05:06] 150 Opening BINARY mode data connection for my_file.mov (328438140 bytes)
[18:06:14] Transfer Timeout (60s). Closing data connection.
[18:06:14] 7032820 bytes transferred. (101 KB/s) (00:01:07)
[18:06:14] 426 Transfer aborted. Data connection closed.
[18:06:14] MDTM my_file.mov
[18:06:14] 213 20081113191920
[18:06:14] Transfer failed.
[18:06:14] Initializing. Transfer Queue v1.0.17.25.
[18:06:14] SIZE my_file.mov
[18:06:14] 213 335965900
[18:06:14] MDTM my_file.mov
[18:06:14] 213 20081113191920
[18:06:14] Source File: Size=335965900, SizeUnit=Byte, Time=2008-11-13T19:19:20, TimeFormat=Exact
[18:06:14] Destination File: Size=14560580, SizeUnit=Byte, Time=2008-11-13T19:19:20, TimeFormat=Exact
[18:06:14] RecentTime=2008-11-16T18:06:14
[18:06:14] Rule "IF Destination Time=Equal AND Size=Smaller AND Transfer=No Matter THEN Resume" matched. Action="Resume".
[18:06:14] PASV
[18:06:14] 227 Entering Passive Mode (85,118,236,24,138,106).
[18:06:14] Opening data connection to 85.118.236.24 Port: 35434
[18:06:14] REST 14560580
[18:06:14] 350 Restarting at 14560580. Send STORE or RETRIEVE to initiate transfer
[18:06:14] RETR my_file.mov
[18:06:14] 150 Opening BINARY mode data connection for my_file.mov (321405320 bytes)
[18:07:20] Transfer Timeout (60s). Closing data connection.
[18:07:20] 5512960 bytes transferred. (81.1 KB/s) (00:01:06)
[18:07:20] 426 Transfer aborted. Data connection closed.
[18:07:20] MDTM my_file.mov
[18:07:20] 213 20081113191920
[18:07:20] Transfer failed.

From the log I can see that the transfer times out and SmartFTP then correctly resumes your transfer.
[18:06:14] Transfer Timeout (60s). Closing data connection.

A transfer timeout happens if SmartFTP does not receive any data within a certain time. You can try to increase the connection timeout from 60s to 120s.

Regards,
Mat