ftplib strange behaviour

Collapse
This topic is closed.
X
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • siggy2@supereva.it
    #1

    ftplib strange behaviour

    Hi,
    I'm using
    Python 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)]
    on win32
    I've noticed a strange (= not deterministic) behaviour of ftplib.py:
    sometimes (not always) it fails (after a variable number of minutes
    from 15 to 130) downloading a 150 MB BINARY file
    (a big gzipped ascii file) with the traceback reported
    below.
    IMVHO this is not a timeout error because my script import
    timeoutsocket.p y (__version__ = "$Revision: 1.1.22.1 $"
    __author__ = "Timothy O'Malley <timo@alum.mit. edu>")
    to explicitly trap that...
    and whenever a timeout occurs it is correctly reported and handled
    (timeout set to 240 seconds)


    Traceback (most recent call last):
    File "C:\mydir\myscr ipt.py", line 77, in downloadFile
    result = ftpObject.retrb inary('RETR '+name, f.write)
    File "C:\Python23\li b\ftplib.py", line 386, in retrbinary
    return self.voidresp()
    File "C:\Python23\li b\ftplib.py", line 221, in voidresp
    resp = self.getresp()
    File "C:\Python23\li b\ftplib.py", line 207, in getresp
    resp = self.getmultili ne()
    File "C:\Python23\li b\ftplib.py", line 193, in getmultiline
    line = self.getline()
    File "C:\Python23\li b\ftplib.py", line 183, in getline
    if not line: raise EOFError


    In ftplib.py I read this comment:
    [CUT]
    # Internal: return one line from the server, stripping CRLF.
    # Raise EOFError if the connection is closed
    def getline(self):
    [CUT]

    May anyone explain me what is this?
    Could this error be explained only as a ftp server problem?
    TIA!
    bye,
    PiErre

    Tags: None
    • Kartic
      #2
      Re: ftplib strange behaviour

      PiErre,

      I have used ftplib but never for such a huge file (assuming your
      problem is related to the size of the file).

      Have you tried downloading the file using another ftp client? Does that
      download succeed? The reason I ask is because I have attempted
      downloads from servers that terminate the connection after a certain
      connection time, in the middle of a download!

      That is the best I can help you out with the information.
      Have a happy New Year.

      Thanks,
      --Kartic

        Comment

        • siggy2@supereva.it
          #3
          Re: ftplib strange behaviour

          Kartic wrote:[color=blue]
          > I have used ftplib but never for such a huge file (assuming your
          > problem is related to the size of the file).[/color]
          we're doing that since python 2.2 from different site to different
          hosts where our script was installed...
          needless to say all the (few) problems we had came from the servers...
          [color=blue]
          > Have you tried downloading the file using another ftp client? Does[/color]
          that[color=blue]
          > download succeed? The reason I ask is because I have attempted
          > downloads from servers that terminate the connection after a certain
          > connection time, in the middle of a download![/color]
          After two weeks the sysadms of the ftp server
          discovered a misconficuratio n in some router... Anyway
          we had already change the script: we managed to trap any exception and

          we added a "retry" loop.
          [color=blue]
          >
          > That is the best I can help you out with the information.[/color]
          Thank you for your help anyway.

          bye,
          PiErre

            Comment

            Previous template Next
            Working...