Something strange is going on - Failed Transfers

[michelle77]

Since a few days something weird it going on with my Filezilla. All of a sudden it is giving "Failed Transfer" results. However, sometimes the transfer does succeed, even though it is listed under "Failed Transfers". Also, the connection doesn't seem to close after having been inactive for a few minutes like it used to. It just stays open.

Here's the command list as an example:

Code: Select all

Status:	Connecting to 72.167.131.148:21...
Status:	Connection established, waiting for welcome message...
Response:	220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response:	220-You are user number 3 of 75 allowed.
Response:	220-Local time is now 07:43. Server port: 21.
Response:	220-This is a private system - No anonymous login
Response:	220 You will be disconnected after 3 minutes of inactivity.
Command:	USER lettersets
Response:	331 User lettersets OK. Password required
Command:	PASS ********
Response:	230-User lettersets has group access to:  450     
Response:	230 OK. Current directory is /
Status:	Connected
Status:	Retrieving directory listing...
Command:	PWD
Response:	257 "/" is your current location
Command:	TYPE I
Response:	200 TYPE is now 8-bit binary
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,176,138)
Command:	MLSD
Response:	150 Accepted data connection
Response:	226-ASCII
Response:	226-Options: -a -l 
Response:	226 20 matches total
Status:	Directory listing successful
Status:	Retrieving directory listing...
Command:	CWD /leukpostpapier
Response:	250 OK. Current directory is /leukpostpapier
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,142,11)
Command:	MLSD
Response:	150 Accepted data connection
Response:	226-ASCII
Response:	226-Options: -a -l 
Response:	226 26 matches total
Status:	Directory listing successful
Status:	Connecting to 72.167.131.148:21...
Status:	Connection established, waiting for welcome message...
Response:	220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response:	220-You are user number 5 of 75 allowed.
Response:	220-Local time is now 07:43. Server port: 21.
Response:	220-This is a private system - No anonymous login
Response:	220 You will be disconnected after 3 minutes of inactivity.
Command:	USER lettersets
Response:	331 User lettersets OK. Password required
Command:	PASS ********
Response:	230-User lettersets has group access to:  450     
Response:	230 OK. Current directory is /
Status:	Connected
Status:	Starting upload of C:\Documents and Settings\Windows XP\My Documents\My Webs\images\letterpads\flower-fairies-letter-pad-design.gif
Command:	CWD /images/letterpads
Response:	250 OK. Current directory is /images/letterpads
Command:	TYPE I
Response:	200 TYPE is now 8-bit binary
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,50,229)
Command:	STOR flower-fairies-letter-pad-design.gif
Response:	150 Accepted data connection
Error:	Connection timed out
Error:	File transfer failed
Status:	Connecting to 72.167.131.148:21...
Status:	Connection established, waiting for welcome message...
Response:	220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response:	220-You are user number 5 of 75 allowed.
Response:	220-Local time is now 07:44. Server port: 21.
Response:	220-This is a private system - No anonymous login
Response:	220 You will be disconnected after 3 minutes of inactivity.
Command:	USER lettersets
Response:	331 User lettersets OK. Password required
Command:	PASS ********
Response:	230-User lettersets has group access to:  450     
Response:	230 OK. Current directory is /
Status:	Connected
Status:	Starting upload of C:\Documents and Settings\Windows XP\My Documents\My Webs\images\letterpads\flower-fairies-letter-pad-design.gif
Command:	CWD /images/letterpads
Response:	250 OK. Current directory is /images/letterpads
Status:	Retrieving directory listing...
Command:	TYPE I
Response:	200 TYPE is now 8-bit binary
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,195,155)
Command:	MLSD
Response:	150 Accepted data connection
Response:	226-ASCII
Response:	226-Options: -a -l 
Response:	226 108 matches total
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,37,8)
Command:	STOR flower-fairies-letter-pad-design.gif
Response:	150 Accepted data connection
Error:	Connection timed out
Error:	File transfer failed
Status:	Connecting to 72.167.131.148:21...
Status:	Connection established, waiting for welcome message...
Response:	220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response:	220-You are user number 7 of 75 allowed.
Response:	220-Local time is now 07:44. Server port: 21.
Response:	220-This is a private system - No anonymous login
Response:	220 You will be disconnected after 3 minutes of inactivity.
Command:	USER lettersets
Response:	331 User lettersets OK. Password required
Command:	PASS ********
Response:	230-User lettersets has group access to:  450     
Response:	230 OK. Current directory is /
Status:	Connected
Status:	Starting upload of C:\Documents and Settings\Windows XP\My Documents\My Webs\images\letterpads\flower-fairies-letter-pad-design.gif
Command:	CWD /images/letterpads
Response:	250 OK. Current directory is /images/letterpads
Status:	Retrieving directory listing...
Command:	TYPE I
Response:	200 TYPE is now 8-bit binary
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,189,39)
Command:	MLSD
Response:	150 Accepted data connection
Response:	226-ASCII
Response:	226-Options: -a -l 
Response:	226 109 matches total
Command:	PASV
Response:	227 Entering Passive Mode (72,167,131,148,175,189)
Command:	STOR flower-fairies-letter-pad-design.gif
Response:	150 Accepted data connection
Error:	Connection timed out
Error:	File transfer failed
Error:	Disconnected from server: ECONNABORTED - Connection aborted

Needless to say, I didn't change anything to my settings. Does anybody know what's going on?

[boco]

Things don't break on their own, something must have changed. The question being if it's on their end or on yours. Can you connect to and transfer from/to other servers fine?

[horndog]

Response: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------

The problem may be with the server. Which is not FZ BTW.

[michelle77]

I totally agree, something must have changed somewhere, I am just trying to figure out where (and how to fix it...)

I only use one server, so unfortunately I can't test it out on a different server.

I've noticed when I upload a file, on the remote site it creates up to 3 times a file called something like .pureftpd-upload.4c54053e.15.7371.3693f11a and deletes the original page I'm trying to replace. However, if I wait a few minutes and browse to the page in my Internet browser I can view the new page just fine. Even though in Filezilla it comes up as a "Failed Transfer". This doesn't work every time though, it appears to be randomnly.

Any thoughts on what it could be?

[boco]

The .pureftpd files are part of a feature of PureFTPd. It is normally meant for larger files - while a large upload is underway the old file is still accessible, just if the upload is completed the old file is replaced by the new one. This shall guarantee as little downtime as possible. Without the feature, the old file is deleted at the begin of the transfer, and comes up unavailable or incomplete until the transfer is complete.

The downside for this (in some cases really useful) feature is that it breaks Resume on upload, you can't append to files after reconnect because of the random names.

[michelle77]

Thanks for the explanation, I get it.

Based on the above log, is there any clue in there as to what it might be? This is not at all my area of expertise and I really don't know where to start looking.

[horndog]

...I really don't know where to start looking.

The first thing I would try is disabling a firewall, for test purposes only.

[michelle77]

I disabled the Firewall and turned off the AVG Resident Shield, but that made no difference.

421 Too many connections (4) from this IP - what could that mean? I only have Filezilla in one window and with one connection as far as I know.

[boco]

Nope. You have one browsing connection plus one connection per transfer running. 3 connections with the default settings. However, some firewalls don't close connections properly, leaving them in limbo until they timeout. So you get over the limit very quick.

[botg]

Do you have active transfers? For each active transfer, a connection is used.

[michelle77]

Nope. You have one browsing connection plus one connection per transfer running. 3 connections with the default settings. However, some firewalls don't close connections properly, leaving them in limbo until they timeout. So you get over the limit very quick.

Is there a way to change the setting so the connections do close properly? Or a way to extend the number of allowed connections?

Do you have active transfers? For each active transfer, a connection is used.

I have the settings set to passive mode, the default setting. Is that what you mean?

It appears to go wrong here:

Code: Select all

Response:	150 Accepted data connection
Error:	Connection timed out

It then retries 3 times, and then after a few minutes it adds the following error:

Code: Select all

Error:	Disconnected from server: ECONNABORTED - Connection aborted

[michelle77]

And now I am also getting:

Code: Select all

Error:	Could not read from socket: ECONNRESET - Connection reset by peer
Error:	Could not connect to server

[boco]

All the error messages point to a misbehaving firewall.

[botg]

Most likely silently dropping connections without informing the peers. Thus the server thinks the connections are still open.

[Newrone]

Most likely silently dropping connections without informing the peers. Thus the server thinks the connections are still open.

"What" is silently dropping cxns? FileZilla? the firewall?

I've also had this problem for the last year or so, FileZilla was fine before that. Looking round for something more reliable. Right now I've got "00:00:00 elapsed" in Queued Files on a few files, & they just sit there like that with the log below. No transfer, no error msgs, nothing.

23:44:55 Status: Starting download of xxx.pdf
23:44:55 Status: ftpcontrolsocket.cpp(1824): Waiting for replies to skip before sending next command... caller=0p14df6f0