[Tutor] SOLVED: [ FTP question (slightly OT)]

[Paul Schewietzek]

Just found the solution, I didn't realize that ftplib has 'passive mode'
as the standard - so I ended up with never actually trying to use
'active mode'....

Thanks nonetheless :)


Am Dienstag, den 19.08.2008, 15:16 +0200 schrieb Paul Schewietzek:
> Hello everyone,
> 
> 
> 
> I put together the following, most of it is from different howtos on the
> web.
> 
> <code>
> #!/usr/bin/env python
> # -*- coding: utf-8 -*-
> 
> def gettext(ftp, filename, outfile=None):
>         if outfile is None:
>                 outfile = sys.stdout
>         ftp.retrlines("RETR %s" % filename, lambda s, w=outfile.write:
> w(s+"\n"))
> 
> def main():
>         from ftplib import FTP
>         import datetime
>         ftp = FTP("ftp.ftpserver.com")
>         ftp.login("my_username", "my_passwd")
>         ftp.set_pasv(1)
> 
>         filename = "name_of_textfile"
>         outfile = open(filename, "w")
> 
>         ftp.cwd("OUT")
>         gettext(ftp, filename, outfile)
>         ftp.quit()
> 
> if __name__ == "__main__":
>         main()
> </code>
> 
> The script actually runs fine when "ftp.ftpserver.com" == "my_server_a",
> however when "ftp.ftpserver.com" == "my_server_b", it produces:
> 
> <snip>
> Traceback (most recent call last):
>   File "/usr/local/bin/get_afendis_STATS_from_ftp.py", line 24, in ?
>     main()
>   File "/usr/local/bin/get_afendis_STATS_from_ftp.py", line 20, in main
>     gettext(ftp, filename, outfile)
>   File "/usr/local/bin/get_afendis_STATS_from_ftp.py", line 7, in
> gettext
>     ftp.retrlines("RETR %s" % filename, lambda s, w=outfile.write: w(s
> +"\n"))
>   File "/usr/lib/python2.4/ftplib.py", line 396, in retrlines
>     conn = self.transfercmd(cmd)
>   File "/usr/lib/python2.4/ftplib.py", line 345, in transfercmd
>     return self.ntransfercmd(cmd, rest)[0]
>   File "/usr/lib/python2.4/ftplib.py", line 324, in ntransfercmd
>     conn.connect(sa)
>   File "<string>", line 1, in connect
> socket.error: (110, 'Connection timed out')
> </snip>
> 
> So it looks like "my_server_b" has some different requirements or
> something? I don't have much experience with the ftp-protocol, so I
> thought maybe you guys could point me in the right direction?
> 
> The files are definitely existent on the servers, and when I connect to
> them via the shell, I can up- and download files as I want.
> 
> Seems like the call to ftp.retrlines() somehow doesn't work...
> 
> I'm also not sure about ftp.set_pasv(1).
> 
> 
> 
> Regards, Paul
> 
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