Re: [squid-users] Problem with squid connecting to an FTP server

Hi,

Neil A. Hillard wrote:
> I've performed a packet capture and see the following events:
>
> o Squid connects, logs in and changes to the correct directory.
>
> o Squid issues a PORT command (Active FTP connection).
>
> o FTP server acknowledges with a 200.
>
> o Squid issues LIST command
>
> o FTP server establishes data connection to Squid (three-way handshake
> successful).
>
> o FTP server issues:
>
> 125 Data connection already open; transfer starting.
>
> response
>
> o Squid returns 502 Bad Gateway error to client within 2ms of the
> previous response.
>
>
> This would indicate that Squid isn't happy with the 125 response from
> the FTP server. The following is the debug output from Squid:
>
> 2005/10/06 11:06:23| ftpParseControlReply: s = {125 Data connection
> already open; transfer starting.
> }
> 2005/10/06 11:06:23| 125 Data connection already open; transfer starting.
> 2005/10/06 11:06:23| ftpHandleControlReply: state=9, code=125
> 2005/10/06 11:06:23| This is ftpReadList
> 2005/10/06 11:06:23| commSetSelect: FD 95 type 1
> 2005/10/06 11:06:23| commSetTimeout: FD 83 timeout -1
> 2005/10/06 11:06:23| commSetTimeout: FD 95 timeout 900
> 2005/10/06 11:06:23| comm_poll: 1+0 FDs ready
> 2005/10/06 11:06:23| comm_poll: FD 95 ready for reading
> 2005/10/06 11:06:23| comm_select: slow FD 95 selected for reading
> 2005/10/06 11:06:23| ftpDataRead: FD 95, Read -1 bytes
> 2005/10/06 11:06:23| ftpDataRead: read error: (107) Transport endpoint
> is not connected
> 2005/10/06 11:06:23| fwdFail: ERR_READ_ERROR "Bad Gateway"
> ftp://username:password@ftp.site.com/path/

Apologies for following up my own post but I've had a quick trawl
through the source code and it would appear that having delay pools
configured in has a bearing on the code used. I don't know a huge
amount of C so I don't think I can get to the bottom of this problem.

I will endeavor to get 2.5stable10 up and running on my development
server and test with / without delay pools compiled in to see if this
bears any relation to the problem.

TIA,

                                Neil.

-- 
Neil Hillard                    hillardn@whl.co.uk
Westland Helicopters Ltd.       http://www.whl.co.uk/
Disclaimer: This message does not necessarily reflect the
             views of Westland Helicopters Ltd.