Question

I’m on Windows 7.

I cannot connect to my iPad with a simple Python script:

HOST = '192.168.1.122'
try:
    f = ftplib.FTP(HOST)
except (socket.error, socket.gaierror), e:    
    MessageBox.Show('ERROR: cannot reach "%s"' % HOST)
    return          
try:
    f.connect(HOST,2121)
    f.login()
except ftplib.error_perm:
    MessageBox.Show('ERROR: cannot login anonymously')
    f.quit()
    return

The errors I have is “getaddrinfo returns an empty list” and the “cannot reach…” message… Cannot solve it…

I tried to FTP with several programs on the iPad without success. If I FTP via DOS box or using a FTP software it works. I tried as well another FTP server on my PC and it works.

I am forced to use port 2121, so can’t change it.

Any clue or experience?

Answer 1

You should read docs before anything:

class ftplib.FTP([host[, user[,
passwd[, acct[, timeout]]]]]) Return a
new instance of the FTP class. When
host is given, the method call
connect(host) is made. When user is
given, additionally the method call
login(user, passwd, acct) is made
(where passwd and acct default to the
empty string when not given). The
optional timeout parameter specifies a
timeout in seconds for blocking
operations like the connection attempt
(if is not specified, the global
default timeout setting will be used).

So, if you do f = ftplib.FTP(HOST) it fails because it will try to connect to standard port (21) and not 2121.
You should get an instance of ftplib and later use f.connect(HOST, 2121).

http://docs.python.org/library/ftplib.html