Net::FTP - Binary mode

[Pascal]

Hi All,

I get an issue by using Net::FTP to transfer both text and binary files from
an Unix server to a PC under Windows 2000. For that, I'm using the
Net::FTP::Get() function.

The files are transferred to the PC but some characters 'OD' are added into
the binary files. However, I've well activated the binary mode by
Net::FTP::Binary().

Below is an extract of my code:
my $opt_s = "myserver";
my $opt_u = "mylogin";
my $opt_p = "mypassword";
my $opt_r = "myremotedir";

$ftp = new Net::FTP ( $opt_s );
die "Failed to connect to server '$opt_s': $!\n" unless $ftp;

die "Failed to login as $opt_u\n" unless $ftp->login($opt_u, $opt_p);

warn "Failed to set binary mode\n" unless $ftp->binary();

print "Cannot change directory to $opt_r\n" unless $ftp->cwd($opt_r);
die "Failed to GET $l\n" unless $ftp->get("file.bin",
"$localdir/file.bin");
$ftp->quit if( defined($ftp) );

I don't get idea about how I can solve my problem. Could you help me ? Is
this problem a know bug from Net::FTP ?

Thanks very much for your help.
BRgds
Pascal

 

[A. Sinan Unur]

I get an issue by using Net::FTP to transfer both text and binary
files
....

warn "Failed to set binary mode\n" unless $ftp->binary();

Then why are you transferring both types of files as binary?

Sinan

PS: Please read the posting guidelines for this group. In particular,
don't retype parts of script. Instead, create a short but complete script
others can run. Then, post that.

 

[it_says_BALLS_on_your forehead]

Then why are you transferring both types of files as binary?

not sure if this is why the OP chose to transfer in binary mode, but
from CPAN docs on Net::FTP...

binary
Transfer file in binary mode. No transformation will be done.

Hint: If both server and client machines use the same line ending for
text files, then it will be faster to transfer all files in binary
mode.

 

[A. Sinan Unur]

not sure if this is why the OP chose to transfer in binary mode, but
from CPAN docs on Net::FTP...

binary
Transfer file in binary mode. No transformation will be done.

Hint: If both server and client machines use the same line ending for
text files, then it will be faster to transfer all files in binary
mode.

Of course, if the server and client machines do not use the same line
ending for text files, then the files will be transferred incorrectly.

From the original post:

Sinan

 

[it_says_BALLS_on_your forehead]

Of course, if the server and client machines do not use the same line
ending for text files, then the files will be transferred incorrectly.

yes, correctness comes first, *then* efficiency. this (apparently
UN)common sense should be stamped on every posting.

 

[usenet]

I get an issue by using Net::FTP...

This is one reason why I try to use Net::SFTP whenever I can (I never
need to worry about line endings, etc). The other advantage is
certificate-based authentication (which helps me avoid having passwords
visible in my scripts or needing to fool with external password files,
etc - and won't let anyone "sniff" my password on the network). And, of
course, it is virtually impossible to have a corrupted SFTP file
transfer.

The protocol, of course, carries encryption overhead, so throughput
will not be as fast. This is a price I am willing to pay.