V 6.52 - FTP Problems

[roele]

One of my hosting providers uses Serv-U FTP Server for Windows. When i try to connect to it TotalCommander hangs after the command

Code: Select all

211-Extension Supported 
CLNT

When i abort the connection and close Total Commander i still have a running tcmd32.exe task. Can't figure out what this could be, all other Hosting providers works pretty well.

[ghisler(Author)]

Can you post a bit more of the connection log, please? You can show it by double clicking on the log window in the ftp toolbar. You can of course modify the user name and site name a bit, for security reasons. But please do not delete any lines!

[roele]

The log seems O.K. to me, so i guess it is more a connection or firewall problem. There are some other weird behaviors connecting this host. The first connection attempt mostly works fine but after disconnecting and try again the connections can't be reetablished

Code: Select all

Connect to: (19.05.2005 09:05:27)
hostname=ftp.*******.ch
username=************
startdir=
ftp.*******.ch=***.***.249.51
220 Serv-U FTP Server v6.0 for WinSock ready...
USER ***********
331 User name okay, need password.
PASS ***********
230 User logged in, proceed.
SYST
215 UNIX Type: L8
Connect ok!
PWD
257 "/" is current directory.
Get directory
TYPE A
200 Type set to A.
PORT 172,20,64,16,5,49
200 PORT Command successful.
LIST
150 Opening ASCII mode data connection for /bin/ls.
Download
Waiting for server...
226-Maximum disk quota limited to 1024000 kBytes

[Xtrician]

try to connect to that server in Passive Mode..

[ghisler(Author)]

I don't think that passive mode will help here- TC does get the data (it shows the message "Waiting for server..."), but hangs because the server doesn't seem to send a "transfer complete" message! The message

226-Maximum disk quota limited to 1024000 kBytes

is incomplete: the dash after the "226" means that more lines should come.

Could you try to get a log with a different ftp client, like ws_ftp, please?

[roele]

Here's a log from FileZilla and there happens the same... i guess the Serv-U FTP Software on the server does not work properly. I'll inform the provider to check it. Thanks for your responses.

Code: Select all

Status:	Connecting to ftp.***.ch ...
Status:	Connected with ftp.***.ch. Waiting for welcome message...
Response:	220 Serv-U FTP Server v6.0 for WinSock ready...
Command:	USER ***
Response:	331 User name okay, need password.
Command:	PASS *******
Response:	230 User logged in, proceed.
Command:	FEAT
Response:	211-Extension supported
Response:	 CLNT
Response:	 MDTM
Response:	 MDTM YYYYMMDDHHMMSS[+-TZ];filename
Response:	 SIZE
Response:	 SITE PSWD;EXEC;SET;INDEX;ZONE;CHMOD;MSG
Response:	 REST STREAM
Response:	 XCRC filename;start;end
Response:	 MODE Z
Response:	211 End
Command:	SYST
Response:	215 UNIX Type: L8
Status:	Connected
Status:	Retrieving directory listing...
Command:	PWD
Response:	257 "/" is current directory.
Command:	MODE Z
Response:	200 MODE Z ok.
Command:	TYPE A
Response:	200 Type set to A.
Command:	PORT 192,168,1,33,6,93
Response:	200 PORT Command successful.
Command:	LIST
Response:	150 Opening ASCII mode data connection for /bin/ls.
Response:	226-Maximum disk quota limited to 1024000 kBytes
Response:	    Used disk quota 1023982 kBytes, available 17 kBytes
Response:	226 Transfer complete.
Status:	Directory listing successful
Command:	REST 0
Response:	350 Restarting at 0. Send STORE or RETRIEVE.
Status:	Retrieving directory listing...
Command:	CWD bin
Response:	250 Directory changed to /bin
Command:	PWD
Response:	257 "/bin" is current directory.
Command:	TYPE A
Response:	200 Type set to A.
Command:	PORT 192,168,1,33,6,94
Response:	200 PORT Command successful.
Command:	LIST
Response:	150 Opening ASCII mode data connection for /bin/ls.
Response:	226-Maximum disk quota limited to 1024000 kBytes
Error:	Timeout detected!
Error:	Could not retrieve directory listing

[Xtrician]

Try to connect with FlashFXP and tell me if this connect to you.

[Clo]

2roele
Hello !
- Just an idea :
1. It seems there is a timer in that server to limit each user's connection time. For the first case you quote (second connection failure, while the first was successful), I think that the server does not reset the timer for a second immediate request from the same user-name / password (bug or by design?)
2. Hence, in the second log you give from FileZilla, one can see :

Code: Select all

...........
Error:   Timeout detected!
...........

- You might try to tick the box “Send command to keep connection alive” in TC for this connection, and try several values (shorter than the default…) Not sure it's supported. Try all commands successively too… To know the whole commands the server supports, just type HELP (all uppercase) as soon as you are logged in alright.

 Kind regards,
Claude
Clo

[SanskritFritz]

2Clo
That has nothing to do with the server, this is a client timeout, waiting for an answer from the server.

[Clo]

2SanskritFritz
Hello Frank !
- Possible, but I've a damn server working roughly like described above, causing a lot of disconnections, so I expressed that idea "in the case…".
- maybe both exists ? I mean : a time out of the server -which disconnects- then a client one, since it no longer receives data from the server ?

 KR
Claude
Clo

[SanskritFritz]

- maybe both exists ? I mean : a time out of the server -which disconnects-

I honestly dont think that a server will disconnect while working on the answer to the client.

[ghisler(Author)]

Response: 226-Maximum disk quota limited to 1024000 kBytes
Error: Timeout detected!
Error: Could not retrieve directory listing

Well, this looks like the disk is full, or the user's quota is reached, so the server cannot allocate the file for the directory listing.

[josver]

I have exactly the same problem, however, I also own the server in question. It is the fifth server in a row, all servU FTP, all version 5.

I installed a Windows 2003 server with servU yesterday and for this server (and not for the others) I have the TC freeze as described above.

The server is active, handles other clients without any problem, and produces the following log :

220 Serv-U FTP Server v5.2 for WinSock ready...
USER wellspringadmin
331 User name okay, need password.
PASS xxxxx
230 User logged in, proceed.
SYST
215 UNIX Type: L8
FEAT
211-Extension supported
CLNT
MDTM
MDTM YYYYMMDDHHMMSS[+-TZ];filename
SIZE
SITE PSWD;EXEC;SET;INDEX;ZONE;CHMOD;MSG
REST STREAM
XCRC filename;start;end
MODE Z
211 End

Total Commander 6.51 freezes after the line "Extension supported" and TC 6.52 after the line "CLNT"

The rest seems never to be received by TC

Hope this helps.

Jos Verhoeff

[ghisler(Author)]

Well, you say that FileZilla also freezes, so something must be wrong with the server or the connection. Maybe a problem with the MTU (maximum transmission unit).

[JackFoo]

I don't know if it helps but I'm having problems with my connection to Serv-U as well, it hangs when uploading/downloading, sometimes at 100% the transfer manager just hangs untill I close it.

Cheers.