Hello,

I ran into problems trying to send binary content to the user's browser for download. Basically what is supposed to happen is when the user clicks on a link, a save as page opens, and the user can click save button to download the file. All of this happens, but I get a wrong file size in the end, so I know the file is not written correctly. Here's the code I'm using in my Perl / CGI script:

open(DB, "<$filename") or die "couldn't open $filename for download: $
+!";

print "Content-Title: $filename\n";
print "Content-Disposition: attachment; filename=$filename\n";
print "Content-Type: application/octet-stream; file=$filename\n\n";

binmode DB;            
binmode STDOUT;

my $buff;
while( read(DB, $buff, 1024) ) {
    print STDOUT $buff;
}
close(DB);

[download]

The file I'm trying to download is 40k in size, but when it's saved on the disk by the cgi script it's 45.7k.

Could anyone take a guess at what the problem might be? Or, maybe give me some pointers to where to find more information on downloading binary files on Win32 systems. I did look in the Camel, Cookbook, online perl docs, Q&A on CGI Programming on Perlmonks and tried a few quick searches in the newsgroups, but they either talk about the problems to which I already know a solution, or the information is for Perl scripts running on Unix systems.

Thank you,
Alex

In reply to Binary file download on Win32 by relax99

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