return send_file( $in_fh,
        streaming    => 1,
        content_type => $mime_type,
        callbacks    => {
            around => sub {
                my ($writer, $content) = @_;

                my $buf = '';
                while( read( $content, $buf, VID_READ_LENGTH ) ) {
                    $writer->write( $buf );
                }
            }
        },
    );

##</code><code>##

Device::WebIO::Dancer:5371] error @2014-08-13 18:01:28> Route exception: isa check for "path_info" failed: GLOB(0x222a5c8) is not a string! at (eval 197) line 27.

##</code><code>##

    return send_file( \'foo',
        streaming    => 1,
        content_type => $mime_type,
        callbacks    => {
            around => sub {
                my ($writer, $content) = @_;

                my $buf = '';
                while( read( $in_fh, $buf, VID_READ_LENGTH ) ) {
                    $writer->write( $buf );
                }
            }
        },
    );

##</code><code>##

    return send_file( '/dev/zero',
        streaming    => 1,
        system_path  => 1,
        content_type => $mime_type,
        callbacks    => {
            around => sub {
                my ($writer, $content) = @_;

                my $buf = '';
                while( read( $in_fh, $buf, VID_READ_LENGTH ) ) {
                    $writer->write( $buf );
                }
            }
        },
    );

##</code><code>##

return send_file( '$in_fh,
        streaming    => 1,
        content_type => $mime_type,
    );