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On Wed, 16 Jul 2003 15:58:39 -0500, "Dan Muey" <[EMAIL PROTECTED]> wrote:
>
> Howdy all,
>
> I've confirmed that my test script is choking on retr()
>
> I've confirmed that the file exists
>
> my $guts;
> my $size = $ftp->size($file)
> if(defined $size) {
> my $retr = $ftp->retr($file);
> $retr->read($guts, $size);
> $retr->close();
> $r .= "I am done trying to get $file";
> } else { $r .= "$file size is not defined"; }
>
> This routine eventually does
> return $r; and if I change $file to a fake name I get the "$file size is not
> defined" returned
> Otherwise it hangs unless I comment out the 3 $retr lines.
>
> Before I go and do a whole bunch more tests could anyone tell me if I'm even doing
> retr() correctly and if the way I'm doing it will place the contents of $file on the
> server I'm connected to via FTP into the variable $guts like I'm expecting.
>
> Any insights or experience?
>
Naturally this is the worst possible way to do things (aka insecure, slow, bandwidth
wasting (in two directions), error prone, but whatever floats your cereal. I am also
assuming you have explored all the other options, aka just getting a shell account and
using a regular 'cp' command, etc.
Now obligatory stuff out of the way, it appears from the docs that 'retr' sets up the
server to begin a file transfer, then you would use 'read' to fill the buffer like you
said. You would then while loop over remote file reading buffer size (though it
appears you are doing it all at once which may be a bad way to go with memory
depending on file sizes) during each iteration the contents of the file should be in
'guts'. Easiest test would be to put a plain text file on the server and just print
'guts' if it contains the file contents then joy!
To speed things up and keep the memory usage down I would setup 2 connections at the
same time, one for your retr/read and the other for your stor/write, then loop over
the remote file doing a buffer at a time, you would essentially setup a pipe. Though
that approach has its own problems, aka need to be allowed two connections at a time,
partial file uploads, etc.
In any case the easiest method to debug this is probably just to try it with plain
text files and see what you get ....
http://danconia.org
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