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From "Rhino" <rhi...@sympatico.ca>
Subject Re: Ant FTP Hangs
Date Tue, 28 Feb 2006 21:16:18 GMT
I had similar behaviour several weeks back when I tried to FTP a much 
smaller number of files, no more than 200. I don't recall if I got no 
message at all or just a very vague and misleading one.

It eventually turned out that the server which was receiving the files had 
filled up. It was just a 5 MB chunk of space and already had a number of 
files on it; my FTP exhausted the space before I had all the files 
transferred. I recall that I had to discover the problem by poking around on 
the server; Ant told me very little that was of use.

Perhaps you are having a similar problem?

I think you're asking how to debug your problem via return codes, registers, 
logs or whatever but I didn't do anything like that in my case so I can't 
suggest a good general technique for debugging FTP problems.

In my case, I knew the space I was targetting was fairly limited; I just 
didn't realize that it was as full as it was. When the FTP failed and I 
couldn't see any other obvious error in my Ant task, I immediately suspected 
space might be the culprit and figured out how much space I was using and 
how much was left; it soon became obvious that I had exhausted the space.

I don't suppose that will help you much unless you are having the exact same 
problem but it's the best I can do.

Oh, one other thing, a couple of years back, I discovered that there was an 
alternate FTP task for Ant. It has a slightly different approach but 
essentially does the same things in a more efficient manner. Perhaps you'll 
have better luck using it? The URL is http://oss.ipov.org/iftp-ant/.

--
Rhino

----- Original Message ----- 
From: "JWM" <techstuff@malcolms.com>
To: <user@ant.apache.org>
Sent: Tuesday, February 28, 2006 3:50 PM
Subject: Ant FTP Hangs


I have an ant script that date checks and FTPs several thousand files.  Ant
gets a portion of the way through it and hangs (I run -verbose).  I'll run
it again, and it'll get further (apparently because more files have already
been transferred each iteration), then hang again.  But it appears to be
diminishing returns.  After restarting a bunch of times, it now date checks
the first thousand or so, then transfers a couple of more.  Then locks up.
There is no error message.

I've tried this on different client machines and FTP'ing to different
servers with different FTP servers (linux on one, IIS on another).

Is FTP just that flaky?

Is there any way I can get more information as to what is really happening?

Is there any trick to FTP'ing this massive number of files short of breaking
it up into a bunch of smaller separately-invoked ant scripts?

I'm a software developer and can debug if someone can give me at least the
zipcode of where to start looking.

Thanks


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