I have found the problem it was not related to WINSCP our Websense filtering was blocking the port ....


Thanks

I am currently making a connection that is having random disconnects.

using passive port range of 1024-1224

It seems that everytime your client goes from passive port 1080 to 1081 it disconnects from the site. My firewall shows no attempt to go to passive port 1081 the connection just dies there. I have testing this on both your current beta build and current stable release.




heres some info from your logging some data has been changed for privacy reasons.




Thanks!!


2012-01-27 11:32:52.062 Connecting to ftp1.randomsite.com:990 ...
. 2012-01-27 11:32:52.062 Connected with ftp1.randomsite.com:990, negotiating SSL connection...
< 2012-01-27 11:32:52.062 220 Open Solutions, Inc FTP1
> 2012-01-27 11:32:52.062 AUTH SSL
< 2012-01-27 11:32:52.093 234 Using authentication type SSL
. 2012-01-27 11:32:53.232 SSL connection established. Waiting for welcome message...
> 2012-01-27 11:32:53.232 USER randomname
< 2012-01-27 11:32:53.248 331 Password required for randomname
> 2012-01-27 11:32:53.248 PASS ********
< 2012-01-27 11:32:53.263 230 Logged on
> 2012-01-27 11:32:53.263 SYST
< 2012-01-27 11:32:53.279 215 UNIX emulated by FileZilla
> 2012-01-27 11:32:53.279 FEAT
< 2012-01-27 11:32:53.294 211-Features:
< 2012-01-27 11:32:53.294 MDTM
< 2012-01-27 11:32:53.294 REST STREAM
< 2012-01-27 11:32:53.294 SIZE
< 2012-01-27 11:32:53.294 MLST type*;size*;modify*;
< 2012-01-27 11:32:53.294 MLSD
< 2012-01-27 11:32:53.294 AUTH SSL
< 2012-01-27 11:32:53.294 AUTH TLS
< 2012-01-27 11:32:53.294 UTF8
< 2012-01-27 11:32:53.294 CLNT
< 2012-01-27 11:32:53.294 MFMT
< 2012-01-27 11:32:53.294 211 End
> 2012-01-27 11:32:53.294 PBSZ 0
< 2012-01-27 11:32:53.326 200 PBSZ=0
> 2012-01-27 11:32:53.326 PROT P
< 2012-01-27 11:32:53.341 200 Protection level set to P
. 2012-01-27 11:32:53.341 Connected
. 2012-01-27 11:32:53.341 Doing startup conversation with host.
. 2012-01-27 11:32:53.341 Changing directory to "/".
. 2012-01-27 11:32:53.341 Synchronizing current directory "/".
> 2012-01-27 11:32:53.341 CWD /
< 2012-01-27 11:32:53.372 250 CWD successful. "/" is current directory.
> 2012-01-27 11:32:53.372 CWD /
< 2012-01-27 11:32:53.388 250 CWD successful. "/" is current directory.
. 2012-01-27 11:32:53.388 Getting current directory name.
> 2012-01-27 11:32:53.388 PWD
< 2012-01-27 11:32:53.404 257 "/" is current directory.
. 2012-01-27 11:32:53.404 Cached directory not reloaded.
. 2012-01-27 11:32:53.404 Retrieving directory listing...
> 2012-01-27 11:32:53.404 TYPE A
< 2012-01-27 11:32:53.419 200 Type set to A
> 2012-01-27 11:32:53.419 PASV
< 2012-01-27 11:32:53.435 227 Entering Passive Mode (11,115,132,52,4,51)





heres where a disconnect happens.

. 2012-01-31 11:29:00.980 SSL connection established
< 2012-01-31 11:29:00.996 226 Transfer OK
. 2012-01-31 11:29:00.996 Directory listing successful
* 2012-01-31 11:29:14.197 (EScpSkipFile) Error transferring file 'C:\Dump\E22S\IPTGAsdasdsaYFCU04I.021600059200020120126032.rdy'.
* 2012-01-31 11:29:14.197 Copying files to remote side failed.
* 2012-01-31 11:29:14.197 Can't open data connection
. 2012-01-31 11:29:14.197 Cached directory not reloaded




I have recreated this multiple times with both client versions.