mod_perl 1.29: send_fh(): result status?

[Brian Gorby]

I'm programming a web application that limits the number of downloads 
for clients on certain files:

...
unless ( $r->header_only ) {
  $r->send_fd($fh);
  $self->record_download($user_id, $file_id);
}
close($fh);
I'd like to be able to have some sort of confirmation that the file was 
sent / received in entirety before recording the download; if the 
download times out for whatever reason for the client, the download will 
not be recorded.

Is this something that's possible in general? with mod_perl?

-Brian